Development Of Human Activities Research Articles

Integrating a multi-variable scenario with Attention-LSTM model to forecast long-term coastal beach erosion

Beach erosion is an adverse impact of climate change and human development activities. Effective beach management necessitates integrating natural and anthropogenic factors to address future erosion trends, while most current prediction models focus only on natural factors, which may provide an incomplete and potentially inaccurate representation of erosion dynamics. This study enhances prediction methods by integrating both natural and anthropogenic factors, thereby enhancing the accuracy and reliability of erosion projections. By extracting historical shorelines through CoastSat model from 1986 to 2020, we develop multivariable scenarios with Attention-LSTM model to predict the regional impacts of natural and anthropogenic factors on erosion to sandy beaches along the typical shoreline of Shenzhen in China. Results reveal that Shenzhen's beaches experienced erosion up to 12 m over the past 35 years. Here we project a decrease in the mean erosion rate of the beaches, identifying population growth (21.0 %) as the main controlling factor before the mid-century in a range of scenarios. We find that Attention-LSTM multi-model ensemble approach can provide overall improved accuracy and reliability over a wide range of beach erosion compared to scenario prediction model of Attention-LSTM and statistical model of Digital Shoreline Analysis System (DSAS), yielding an average uncertainty of 10.99 compared to 13.29. These insights reveal policies to safeguard beaches because of the rising demand for beaches due to human factors, coupled with decreased impervious surfaces through ecological conservation, lead to mitigation for beach erosion. Accurate forecasts empower policymakers to implement effective coastal management strategies, safeguard resources, and mitigate erosion's adverse effects. Our study offers finely-tuned predictions of coastal erosion, providing crucial insights for future coastal conservation efforts and climate change adaptation along the shoreline, and serving as a foundation for further research aimed at understanding the evolving environmental impacts of beach erosion in Shenzhen.

Implementación de atrapanieblas como alternativa de abastecimiento de agua en el municipio de Tuluá

Contextualization: Since the 20th century, water consumption has increased globally. This increasing is due to the fact that there is currently a high demand in developed countries and in those with rising economies. Another problem is population growth worldwide, which generates indiscriminate water use in the agricultural, livestock and industrial sectors; which generates an increasing in the use water. Knowledge gap: Fog catchment systems (fog catchers) become a useful alternative for taking advantage of the water resource available in the environment for subsequent storage and distribution in different human development activities. However, in Colombia there is a lack of studies that can be related to the implementation of these artisanal systems. Purpose: In this research, the relevance of the use of four fog catchers with different percentages in the polyshade, are located in the Vijal and Alto Bonito properties, which correspond to an ecosystem zone of sub-Andean forest, was investigated with the aim to determinate the viability of this tool in the water collection. Methodology: A randomized complete block design was carried out and, using Duncan's test, it was determined if there were significant differences between the polyshade percentages used and the height of the plots. Results and conclusions: As a result, it was obtained that polyshade of 65%, captured 980 ml corresponding to the Alto Bonito property; while in the Vijal, the fog catch was 784 ml. The mesh with 80% polyshade, captured 990 ml in the Alto Bonito property, while in Vijal, the fog catch was 794 ml. There is no significant difference to obtain water related to polyshadows. In relation to the difference in the properties altitude, there is a significant difference; the water average accumulated in the Vijal property is 25.5 ml/day, while in Alto Bonito, it is 31.8 ml/day.

EXPLORING THE EVOLUTION OF SUSTAINABILITY SCIENCE UNDERSTANDING THE COMPLEXITY AND DEVELOPMENT OF SUSTAINABILITY PROGRAMS

Objective: The objective of this study are to investigate what and how existing sustainability programs are, to group and map these sustainability programs' main ideas to gain a more constructive and integrated understanding, and to find clues or opportunities to improve efforts to achieve sustainability. Theoretical Framework: The concept of sustainable development remains complex, ambiguous, and challenging to implement. The global environmental situation is worsening, leading to disasters and unfavorable climate change. Despite numerous efforts such as seminars, research, conferences, and work programs, both locally and globally, the understanding and implementation of sustainability remain unclear. There are differing views on the focus and strategy needed to address the development paradox, indicating a lack of consensus on the true meaning of sustainability. Method: This qualitative descriptive research employs a two-tiered literature review approach. The first focuses on the historical correlation between development and sustainability, examining early human civilization's development activities during the Neolithic era. The second tier analyzes and categorizes existing sustainability programs, reviewing various research articles on environmental preservation, natural resource protection, impact reduction, and social equity programs since the first industrial revolution. The findings are synthesized critically and comprehensively to identify common themes and core ideas. Results and Discussion: This study acknowledges the complexity and challenges of sustainability, emphasizing the ongoing relevance of conservation and resilience as core concepts. To address the dichotomy of development, new sustainability programs must also consider the revitalization of natural resources, continuity of ecosystem services, biodiversity maintenance, and resilience building. Approaches such as ecosophy and predictive methods based on dynamic phenomena can contribute (as a clue) to achieving sustainability goals by encouraging holistic thinking, balancing human and environmental needs, and promoting co-evolution. Research Implications: The complexity and constellation of diverse and intricate sustainability programs can be seen through this research. Although limited, these findings are expected to contribute to Sustainability science through a more comprehensive and constructive understanding of sustainability history and knowledge that has been described. Originality/Value: This study conducts a comprehensive research method covering various disciplines and a broad scope of sustainable development, including its evolution since the industrial revolution and aspects related to history of development. The research result creates a visual map representing the structure of existing sustainability programs, serving as a guide for proposing new research initiatives. This knowledge facilitates aligning new proposals with existing themes, bridging gaps in theories, and fostering the exploration and development of innovative sustainability ideas.

Research on the Material Performance and Forming Process of Lunar Regolith Simulant

Establishing a safe and sustainable lunar base on the moon is the foundation for human exploration and development activities. Due to the high transportation costs of the Earth Moon space, a large amount of construction materials are difficult to obtain from Earth. Therefore, how to utilize lunar resources for in-situ construction on the lunar surface has become the key challenge for the construction and operation of lunar base. Faced with special lunar simulant materials and extreme lunar environments, lunar construction faces a series of problems and challenges. This article conducted research on lunar regolith simulant and forming process, providing guidance for lunar surface construction.

Research on energy consumption in household sector: a comprehensive review based on bibliometric analysis

Households are an important sector in carrying out human development activities, accounting for more than 30% of the total global energy consumption. The continued growth of household energy consumption (HEC) and carbon emissions is threatening economic and environmental sustainability. This review focuses on the research in the field of HEC and conducts a bibliometric analysis of research articles from the Web of Science Core Collection since 2000. The results show that: 1) HEC research has undergone rapid development since 2014, and interdisciplinary fusion and collaborative research have become dominant trends. 2) Keyword co-occurrence analysis clearly identifies the current urgent themes, including energy demand and its determinants, environmental impact factors and assessments, and energy-saving technologies and emission reduction measures. 3) The analysis of citations reveals that economic models, such as input-output models and life cycle assessment, are frequently employed in the field of HEC. Based on a summary of household energy-saving and emissions reduction work, this paper critically discusses the limitations of existing measures such as smart home technology, sustainable energy systems, and behavioral interventions. The main directions for promoting household energy-saving development in the future are identified: including improving the security and customer engagement of smart home technology, focusing on the availability and stability of sustainable energy, and paying more attention to low-income and aging households in behavioral intervention measures. One of the important obstacles facing research is how to reduce energy management efficiency and usage costs through technology and policy.

Response of Sea Water Exchange Processes to Monsoons in Jiaozhou Bay, China

The self-purification capacity of semi-closed bays is closely related to the exchange process of open sea water. In recent years, with the enhancement of human development activities, environmental problems such as eutrophication, weak hydrodynamics, and poor water exchange capacity have appeared in the bays. In this paper, the water exchange time and flow field in Jiaozhou Bay (JZB) were investigated using the environmental fluid dynamics code with a coupled dye module. Specifically, Jiaozhou Bay was divided into seven zones to explore the effect mechanism of a monsoon on the water exchange process. A detailed analysis was performed on the current water exchange status in the highly polluted northeastern region of the bay and its influence on the surrounding areas. Based on the definition of the average residence time and considering the effect of the tracer release moment, the distribution of the water exchange time in the bay under three circumstances was obtained. Results showed that the timing of the tracer release exerted minimal influence on the average residence time. The water exchange process was influenced by a combination of astronomical and meteorological factors. The overall exchange capacity of the bay was strongest under the impact of a winter monsoon and tides, followed by a summer monsoon and tides, and the weakest exchange occurred under the influence of tides alone. Moreover, both summer and winter monsoons greatly facilitated water exchange in the heavily polluted northeastern region. However, pollutants from this region had a significant impact on surrounding areas during a summer monsoon. Changes in the structure and intensity of residual flow fields were the primary causes of exchange rate discrepancies.

Spatiotemporal evolution and relationship between construction land expansion and territorial space conflicts at the county level in Jiangsu Province

In rapidly urbanizing areas, intense human development activities and fierce competition for spatial resources have led to apparent territorial space conflicts. This paper selects Jiangsu Province as the study area to explore the spatiotemporal evolution characteristics and response relationship between the expansion of county-level construction land and territorial space conflicts from 1985 to 2020 to provide a reference for regional territorial space optimization. The results show that the construction land expansion intensity (CEI) at the county level showed a spatial characteristic of greater power in the southeast than in the northwest. The spatial expansion mode (SEI) was mainly characterized by spread type, with construction land experiencing marginal expansion, the emergence of new independent expansion points, and then the expansion process of agglomeration distribution. From 1985 to 2020, there was a significant increase in territorial space conflicts and an increase in spatial aggregation at the county level. The regions with high space conflicts intensity index (SCII) values and high increase in space conflicts intensity changes (SCIIC) were mainly located in Xuzhou, Nanjing, and at the junction of Changzhou, Wuxi, Suzhou, and Zhenjiang. There was a positive correlation between CEI and SCIIC, and the correlation of positive correlation units increased from south to north. There was a positive correlation between SEI and SCIIC, and the units with a strong positive correlation were mainly located in Xuzhou, Nantong, Changzhou, and Wuxi. The changes in population density and GDP also affect SCIIC. This paper strengthens the understanding of the spatiotemporal evolution characteristics and related relationships of construction land expansion and territorial space conflicts at the county level over a long time, which can provide a decision-making basis and reference for the regulation of county construction land expansion, territorial space optimization in Jiangsu Province.

Worldwide comparison between the potential distribution of Rhipicephalus microplus (Acari: Ixodidae) under climate change scenarios.

The cattle tick Rhipicephalus microplus (Acari: Ixodidae) has demonstrated its ability to increase its distribution raising spatially its importance as a vector for zoonotic hemotropic pathogens. In this study, a global ecological niche model of R. microplus was built in different scenarios using Representative Concentration Pathway (RCP), Socio-Economic Pathway (SSP), and a climatic dataset to determine where the species could establish itself and thus affect the variability in the presentation of the hemotropic diseases they transmit. America, Africa and Oceania showed a higher probability for the presence of R. microplus in contrast to some countries in Europe and Asia in the ecological niche for the current period (1970-2000), but with the climate change, there was an increase in the ratio between the geographic range preserved between the RCP and SSP scenarios obtaining the greatest gain in the interplay of RCP4.5-SSP245. Our results allow to determine future changes in the distribution of the cattle tick according to the increase in environmental temperature and socio-economic development influenced by human development activities and trends; this work explores the possibility of designing integral maps between the vector and specific diseases.

Retaining retirement-eligible older workers through training participation: The joint implications of individual growth need and organizational climates.

As the workforce ages, organizations are increasing their efforts to retain retirement-eligible workers to avoid human capital shortages and preserve knowledge reservoirs. Nevertheless, the potential factors and underlying mechanisms relating to the retention of retirement-eligible workers have rarely been examined. The current research investigates how retirement-eligible workers may be retained by the organization through human capital development activities. Specifically, we draw upon the motivated choice framework to investigate the joint implications of individual (i.e., individual growth need) and organizational factors (i.e., climate for developing older workers and age-inclusive climate) for retirement-eligible workers' training participation and thereby retention. We tested our hypotheses with two samples in the Netherlands. Study 1 utilized the two-wave, multilevel survey data (2015-2018) from the Netherlands Interdisciplinary Demographic Institute Pension Panel Study (N = 3,200 older workers from 409 organizations). We found that individual growth need and climate for developing older workers had positive associations with training participation, which in turn was positively related to older workers' decision to stay (vs. retire) despite retirement eligibility. In addition, age-inclusive climate amplified the positive relationship between individual growth need and training participation. Study 2 utilized the two-wave Longitudinal Internet studies for the Social Sciences panel data (N = 301 older workers). We replicated result patterns from Study 1 and found that person-organization fit and needs-supplies fit mediated the relationship between training participation and retirement-eligible workers' intention to stay. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

Natural groundwater recharge estimation using multiple methods combined with an experimental study

Abstract Due to increasing human settlements, agricultural development, and economic activities, the extraction of groundwater is increasing. The over-exploitation of aquifers has become a cause for concern within the last century due to these developmental activities and the accurate estimation of sustainable yield from aquifers is very important. Assessing natural aquifer recharge is one of the key challenges in determining the sustainable yield of aquifers. In this study, an integrated model using the SCS-CN method, remote sensing, and a Geographic Information System (GIS) is developed for estimating natural aquifer recharge for the recharge area of the sub-basin of the Vellar river basin, Tamil Nadu, India. Also, actual infiltration measurements were conducted and an infiltration-based model was developed to compute natural groundwater recharge and compare it with empirical methods. On average, the recharge is 17% of the rainfall for the recharge area.

BMT Development Strategies In The Era Of Covid-19 Pandemic With A SWOT Analysis Approach

This research aims to analyze the strengths, weaknesses, opportunities, and threats to the positioning and development strategy of Baitul Maal Wa Tamwil (BMT) in West Java in the Era of the Covid-19 Pandemic. The descriptive qualitative research method was used. The study was conducted at 6 BMTs in the West Java region Technique of data analysis used is SWOT analysis. The results of the calculation of the SWOT matrix produce several alternative strategies, namely utilizing government support for Islamic banking by increasing the types of Sharia products, approaching potential investors even though capital is limited considering the public interest in the Islamic economy is very high, making regional regulations on sharia economics, establishing cooperation and partnerships with other financial institutions to obtain capital, capacity building of human resources, training, and development activities through partnerships with other banks that apply sharia principles. The implications of the results of this research are as input material for the development of new policies, strategies, and efforts to develop BMT both in the pandemic era and after the Covid-19 pandemic and to develop theories for alternative strategies in developing BMT in the Covid-19 pandemic era.

Detailed modelling to evaluate the effectiveness of sediment recycling on coastal habitat

In many parts of the world, ports and harbours lie adjacent to ecologically important areas of coastal habitat. In such areas port authorities, coastal managers and regulators are required to negotiate the tension between the demands of making ports ever more efficient, with wider and deeper approaches to accommodate vessels of deeper draft and larger handling areas, and the preservation of coastal habitats which are vitally important for bird and fish populations and which help protect the coast from flooding and erosion. The deepening of approach channels and berths usually results in an increased rate of sedimentation and maintenance dredging. There is an increasing recognition that such dredged sediment is a resource which should be utilised beneficially for human development activities and/or enhancement of ecological habitats. One form of beneficial use of dredged material, is termed “sediment recycling” or “strategic placement”. This form of beneficial use consists of the placement of cohesive sediment into the water column or onto the bed in such a way so that currents and waves then transport the released sediment onto the desired habitats. Sediment recycling is less widely practiced because the changes in bed level resulting from placement are generally of the order of a few centimetres/year or less and it is difficult to demonstrate whether such recycling is successful. This paper describes a methodology for the assessment of the effectiveness sediment recycling, implementing the methodology on a case study of a large-scale sediment recycling scheme in the Stour/Orwell Estuary system in the United Kingdom, designed to offset the identified adverse effects of an approach channel deepening on the estuary system. The study represents a major contribution to the consideration of non-direct beneficial use of cohesive sediment. For the first time a methodology for reliably evaluating the effects of sediment recycling, separating the effects of natural changes in morphology from the beneficial use, has been shown to be effective. This method, which is applicable anywhere where there are sufficient data, allows a robust evaluation of the effectiveness of such methods and crucially enables these methods to be tested and optimised using modelling before implementation.

A comparative analysis of two cash transfer programmes on how they influence the citizenship rights of beneficiaries.

In Ghana, barriers faced by people living in poverty exceed their ability to meet their daily needs. An effective way of addressing these barriers can be achieved by improving the uptake of citizenship rights among them. This article aims to determine whether cash transfer programmes promote the taking up of citizenship rights among beneficiaries. The article also examines the impact of conditions on the uptake of citizenship rights by the beneficiaries of cash transfer programme. Data collected from the field were used for this study. The results highlight how cash transfer programmes promote uptake of citizenship rights among beneficiaries. The research also shows that conditionality promotes the taking up of human capital development activities. These results make known that monitoring and enforcement of conditions have a higher effect on the promotion of uptake of citizenship rights among beneficiaries than non-enforcement.

The Potentials for the Ecological Management of Landscape Connectivity Including Aquatic Ecosystems in Northeast Albania

At the landscape level, freshwater ecosystems are linked at various spatial and temporal scales by movements of different fauna components adapted to life in water. We review the literature on the state of landscape connectivity and related aquatic species that connect different types of freshwater habitats, focusing on linkages from streams, large rivers and standing water bodies. Based on existing evidence, it is clear that biotic linkages throughout current mosaic have important consequences for biological integrity and biodiversity. The recent developments with regard to urbanization, expansion of urban centers, infrastructure development, and hydropower plant construction in Albania are in line with global destruction and fragmentation of habitats resulting in the parceling up of landscapes that, in this very case, have been caused by human population growth and development activities. The primary aim of this article is to address the landscape connectivity in a wider northeastern part of Albania considering various protected areas. The landscape connectivity is a pillar component of connectivity conservation that has emerged as a response approach to a range of threats to biodiversity, which include habitat degradation and destruction, fragmentation and climate changes. The approach analyses of landscape connectivity were defined from a human perspective in a linkage among different protected areas, including National Park Albanian Alps, Nature Park Korrab-Koritnik, National Park ShebenikJabllanica, Pogradec Landscape Protected Areas and National Park Prespa. The basis of this analysis lies in the Network of Protected Areas (NPAs) of Albania. Cumulatively, the protected areas connectivity, aquatic ecosystem linkage and individual movements connect populations within and among landscape mosaics and contribute to national and regional diversity and resilience to disturbance. This study highlights the importance of considering both terrestrial and aquatic ecosystems connectivity in conservation planning and management.

Factors Influencing Human Capital Development Activities of Public and Private Universities in Rivers State, Nigeria

The study focused on factors influencing human capital development activities in Public and Private Universities in Nigeria. The population of the study consisted of undergraduate students from two universities in Rivers State, Nigeria, this is as a result of university students graduating without full impact to development of the nation. Purposive and simple random sampling by balloting was used to draw a sample of 320 respondents for the study. An instrument titled “Influence of Human Capital Development Activities Questionnaire” (IHCDAQ) was constructed by the researcher and used as means of retrieving data from the respondent. Validation of the instrument was done by three experts in measurement and evaluation while Cronbach Alpha method was used to determine the reliability of the instrument in sections and reliability index of 0.86 was realized. The data was analysed using frequency and percentage while t – test at 0.05 alpha level. Finding showed that there is a significant difference in the mean response scores of respondents in public and private universities on the extent to which constant strike actions (p=0.034<0.05) and Provision of library facilities (p=0.021<0.05) influence human capital development in Nigerian public and private Universities. There was no significant difference in the mean response scores of respondents in public and private universities on the extent to which constant provision of infrastructure (p=0.34>0.05) influence human capital development in Nigerian public and private Universities. Thus, government and every other stakeholders should be sincere in their deliberation as way of avoiding strike actions since it has been proven that such actions has a significant effect on human capital development index as perceived by student in public and private institution.

Assessing the International Multi-Hazard Disaster Risk Governance in the Greater Mekong Sub-Region

The Mekong River Basin faces various interconnected hazards caused by climate risks and human development activities such as rapid hydropower dam construction that may increase disaster risks to downstream countries. Given its multi-hazards and transboundary impacts, it is imperative to create effective, regional-level disaster risk governance across the Mekong Sub-Region’s countries. There are several established cooperation frameworks in the region including the Mekong River Commission (MRC) and the Lancang-Mekong Cooperation (LMC). However, the effectiveness of the regional platforms in governing disasters in the region remains to be understudied, especially in the context of addressing cascading, multihazard risks in the Mekong River Basin. Hence, this paper aims to assess the regional capacity and effectiveness as a regional platform for addressing multihazard and transboundary disaster risks. This paper will utilize a qualitative research method, including desk review and content analysis of relevant literature and policies. For the analytical approach, the paper will also examine how the region employs soft-political collaboration through the International Regime theory. By incorporating perspectives of disaster risk governance and international cooperation issues in the Mekong region, this interdisciplinary study provides a novel angle for the DRR field. Findings from this study are also expected to contribute to achieving the SFDRR Target F of enhancing international cooperation in DRR.

Habitat Quality Assessment in the Yellow River Delta Based on Remote Sensing and Scenario Analysis for Land Use/Land Cover

Land Use/Land Cover (LULC) change is one of the core features of global change. Habitat quality is an essential representation of ecosystem service functioning and ecosystem health. It is of great significance to assess the habitat quality spatiotemporal heterogeneity caused by land-use change in the regional ecological environment for security and sustainable regional management. Based on the interpreted LULC data of the Yellow River Delta (YRD) in 2000, 2010, and 2020, the PLUS model was used to forecast different LULC 2030 scenarios. Specifically, this study aimed to analyze the LULC change in the YRD and use the InVEST model to evaluate the overall habitat quality in the historical period of the region and future scenarios. From 2000 to 2020, the most critical land-use changes within a 20 km radius from the coastline in the study area are mainly the sharp increase in construction land, mariculture and salt pan, and the sharp decline of coastal wetlands, which is mainly due to the high intensity of human development activities and the process of erosion and deposition in coastal zones and estuarine deltas. During the period, the average habitat quality in the YRD decreased yearly, with the overall regional habitat quality classified as intermediate. The habitat quality was the most significant in the 0–20 km range from the coastline because of the high intensity of human development activities in this area. The habitat quality in the YRD varied under different scenarios in 2030. In the baseline scenario (BS) and socio-economic development (SD) scenario, the habitat quality decreased continuously, but the habitat quality increased under the ecological protection (EP) scenario. This research can provide relevant scientific references for optimizing landscape patterns and improving habitat quality in the YRD region.

Landscape ecological risk assessment and driving mechanism of coastal estuarine tidal flats—A case study of the liaohe estuary wetlands

Estuarine tidal flats are located in the land-sea crisscross-sensitive zone. The degraded and shrinking state of major tidal flat landscapes weakens their ecological role in maintaining the safety of coastal wetlands in the world. However, little attention has been paid to tidal flat landscape evolution and ecological risks due to the tidal flats being located in the periphery of estuarine wetlands. This study was conducted in the tidal flats of the Liaohe estuary wetlands. The GIS spatial analysis and a transition matrix were combined to explore the tidal flat landscape evolution characteristics. The ecological risk faced by the tidal flats was evaluated by a landscape ecological risk model constructed by landscape indexes. The key driving factors and threshold values that affect the ecological risks were clarified using geographical detectors and regression analysis methods. The results showed that the tidal flats mainly evolved into a natural wetland before 2000 and rapidly changed into an artificial landscape between 2000 and 2010; the proportion of artificial landscapes then began to decline after 2010. Over the past 30 years, the landscape ecological risk in this area has generally been at a medium risk level. The ecological risk index showed a decreasing trend with the increases in landscape diversity. The low-risk artificial plaques have gradually replaced high-risk and medium-risk plaques of exposed tidal flats and natural wetlands. The study showed that human development activities were the key factors affecting the landscape ecological risks of the tidal flats. River sediment discharge was the key natural factor in maintaining the landscape ecological risk at a stable level. Therefore, the human development activities should be controlled within an appropriate limit, and the material supply of the upstream basin should be guaranteed to maintain the stability of the tidal flat landscape form in the protection and utilization of estuarine tidal flats in the future.

Undeveloped and developed phases in the centennial evolution of a barrier-marsh-lagoon system: The case of Long Beach Island, New Jersey

Barrier islands and their associated backbarrier environments protect mainland population centers and infrastructure from storm impacts, support biodiversity, and provide long-term carbon storage, among other ecosystem services. Despite their socio-economic and ecological importance, the response of coupled barrier-marsh-lagoon environments to sea-level rise is poorly understood. Undeveloped barrier-marsh-lagoon systems typically respond to sea-level rise through the process of landward migration, driven by storm overwash and landward mainland marsh expansion. Such response, however, can be affected by human development and engineering activities such as lagoon dredging and shoreline stabilization. To better understand the difference in the response between developed and undeveloped barrier-marsh-lagoon environments to sea-level rise, we perform a local morphologic analysis that describes the evolution of Long Beach Island (LBI), New Jersey, over the last 182 years. We find that between 1840 and 1934 the LBI system experienced landward migration of all five boundaries, including 171 meters of shoreline retreat. Between the 1920s and 1950s, however, there was a significant shift in system behavior that coincided with the onset of groin construction, which was enhanced by beach nourishment and lagoon dredging practices. From 1934 to 2022 the LBI system experienced ~22 meters of shoreline progradation and a rapid decline in marsh platform extent. Additionally, we extend a morphodynamic model to describe the evolution of the system in terms of five geomorphic boundaries: the ocean shoreline and backbarrier-marsh interface, the seaward and landward lagoon-marsh boundaries, and the landward limit of the inland marsh. We couple this numerical modeling effort with the map analysis during the undeveloped phase of LBI evolution, between 1840 and 1934. Despite its simplicity, the modeling framework can describe the average cross-shore evolution of the barrier-marsh-lagoon system during this period without accounting for human landscape modifications, supporting the premise that natural processes were the key drivers of morphological change. Overall, these results suggest that anthropogenic effects have played a major role in the evolution of LBI over the past century by altering overwash fluxes and marsh-lagoon geometry; this is likely the case for other barrier-marsh-lagoon environments around the world.

Rapid migration of mainland China's coastal erosion vulnerability due to anthropogenic changes

With the global rise in sea levels caused by climate change and frequent extreme weather processes, high-density population aggregation and human development activities to enhance coastal areas vulnerability, populations, resources, and the ecological environment are facing huge pressure. Natural coastlines are being destroyed, and increasingly serious problems, such as coastal erosion and ecological fragility, have become disasters in coastal zones. The coastal vulnerability changed by climatic variables has created a major concern at regional, national and global scales. By comparing the data of two periods in the past 40 years, coastline vulnerability of coastal erosion in mainland China were evaluated by use of reverse cloud model and AHP with 10 indicators, including natural, anthropogenic, social and economic factors, etc. The main factors controlling coastal erosion included the proportion of Quaternary strata, the gradual reclamation of marine areas as land areas (in kilometres) and the percentage decrease in coastal sediment entering the sea. The secondary impact factors included the high proportion of artificial coastlines and the impacts of waves and storm surges under the influence of relative sea level changes. Human activities could further influence coastal vulnerability, making the erosion risk a considerable concern. Legislation, coordinated management system and technology are proposed to improve the quality of the marine ecological environment.