Environmental Conservation Goals Research Articles

Trade optimality and micro-nutrient productivity: Assessing the impact of crop trade on nitrogen fertiliser use efficiency

Intensification of agricultural practices has been pivotal in meeting the nutritional demands of a burgeoning global population. However, the widespread application of nitrogen (N) fertilisers has contributed to environmental pollution. In this study, we quantitatively assessed the role of international crop trade in optimising the productivity of micro-nutrients and its implications for N fertiliser use. Using a comprehensive dataset spanning from 1961 to 2019, we analysed the trade flows of seven key micro-nutrients—vitamin C (VC), vitamin B3 (VB3), vitamin B6 (VB6), calcium (Ca), magnesium (Mg), iron (Fe), and zinc (Zn)—embedded in agricultural products. We developed a novel framework to evaluate trade optimality and functionality based on the concentration-weighted productivity of micro-nutrients per kilogram of N fertiliser. Our findings reveal that while international trade has generally contributed to enhancing micro-nutrient productivity per unit of N fertiliser, trade optimality has shown a decreasing trend. High-productivity countries tend to export less relative to their potential, whereas countries with lower productivity import a larger share of crops. This decoupling suggests the need to re-evaluate trade policies to ensure that they align with sustainable agricultural practices and environmental conservation goals. We also identified potential savings in N fertiliser use through optimised trade practices, with estimated savings of 15–45 Tg of N per year. This could mitigate the negative agricultural impact and demonstrates the significant role that trade can play in achieving global sustainability targets. Overall, our research underscores the importance of aligning international crop trade with sustainable N management strategies to enhance micro-nutrient availability, improve environmental outcomes, and contribute to global efforts in achieving the Sustainable Development Goals.

From expansion to efficiency: Machine learning-based forecasting of Japan's building material stocks under demographic declines

Japan's unique demographic trajectory, marked by population decline and aging, coupled with continued urbanization, presents distinct challenges for aligning built environment capacity with resource efficiency. This study aims to investigate the historical evolution and project future scenarios of building material stock (MS) and their spatial distribution across Japan's three major metropolitan areas. Through a comprehensive material flow and stock analysis, the historical accumulation of building materials from 2009 to 2020 was quantified, revealing a dominance of concrete and an increasing overall stock. The contributions of various driving factors to changes in construction areas were explored, identifying population dynamics as the predominant influence. Leveraging shared socioeconomic pathway scenarios (SSPs), this research forecasted building floor area and MS until 2050 under five distinct SSPs. The results indicated an overall reduction across all scenarios, yet with a continued concentration in high-density urban cores. The substantial gap between the highest and lowest projected MS scenarios highlighted opportunities for material conservation and emission reductions through sustainable practices. Sustainable urban development in densely populated regions necessitates a balance between infrastructure provision and environmental conservation, while in sparsely populated areas, the focus shifts to the efficient management and utilization of vacant properties and materials to cope with the impacts of significant population declines. By offering insights into the building floor area and MS implications of Japan's demographic changes, this study underscores the necessity of sustainable urban planning and resource management strategies to navigate the challenges posed by demographic shifts, ultimately contributing to sustainable development and environmental conservation goals.

How Can the Circular Economy Contribute to Resolving Social Housing Challenges?

The construction sector stands as the predominant consumer of cement, steel, and plastic and is accountable for a substantial 55% of industrial carbon emissions. Greenhouse gases and other forms of pollution linked to the housing sector significantly contribute to the adverse environmental impact of the construction industry. This study underscores the need to incorporate pertinent issues into the Circular Economy (CE) agenda for a lasting and effective mitigation strategy. Through a Systematic Literature Review (SLR), this article explores answers to the research question: “How can the Circular Economy contribute to resolving social housing challenges?” The findings from this comprehensive review highlight that refurbishing the social housing (SH) built environment and formulating public policies targeted at the SH sector emerge as pivotal themes for effective solutions. The principles of the Circular Economy present a sustainable model that can play a crucial role in addressing the social housing challenge. In conclusion, this SLR demonstrates that Circular Economy principles offer a viable approach to tackling the social housing crisis. By embracing these principles, a sustainable model can be established to address the challenges posed by social housing, thereby contributing to the broader goal of environmental conservation in the construction sector.

Native blue elderberry in hedgerows bridges revenue and conservation goals

Field edge hedgerows have long been promoted by UC Cooperative Extension and other organizations as a way to bring needed biodiversity to California farms. However, adoption of hedgerow planting still falls far short of available edge capacity. Our study explores a new multifunctional model of hedgerows that combines production with environmental conservation goals by considering the revenue potential of harvesting blue elderberry. Blue elderberry is a drought-tolerant native species well adapted to multiple microclimates in California and the western United States. The growth of elderberry herbal products and specialty foods markets is currently skyrocketing nationally and globally, and blue elderberry may offer a promising entry into these markets. Blue elderberry is also sought out by Indigenous people as one important component in efforts to restore cultural and food sovereignty. A field demonstration trial in the southern Sacramento Valley found that elderberry yields from 1,000-foot-long multi-species hedgerows could potentially provide from $2,000 to $3,000 in net annual revenue within 3 to 5 years, with much more possible as the hedgerows mature.

Emerging environmentally friendly bio-based nanocomposites for the efficient removal of dyes and micropollutants from wastewater by adsorption: a comprehensive review.

Water scarcity will worsen due to population growth, urbanization, and climate change. Addressing this issue requires developing energy-efficient and cost-effective water purification technologies. One approach is to use biomass to make bio-based materials (BBMs) with valuable attributes. This aligns with the goal of environmental conservation and waste management. Furthermore, the use of biomass is advantageous because it is readily available, economical, and has minimal secondary environmental impact. Biomass materials are ideal for water purification because they are abundant and contain important functional groups like hydroxyl, carboxyl, and amino groups. Functional groups are important for modifying and absorbing contaminants in water. Single-sourced biomass has limitations such as weak mechanical strength, limited adsorption capacity, and chemical instability. Investing in research and development is crucial for the development of efficient methods to produce BBMs and establish suitable water purification application models. This review covers BBM production, modification, functionalization, and their applications in wastewater treatment. These applications include oil-water separation, membrane filtration, micropollutant removal, and organic pollutant elimination. This review explores the production processes and properties of BBMs from biopolymers, highlighting their potential for water treatment applications. Furthermore, this review discusses the future prospects and challenges of developing BBMs for water treatment and usage. Finally, this review highlights the importance of BBMs in solving water purification challenges and encourages innovative solutions in this field.

Coupling an Autonomous UAV With a ML Framework for Sustainable Environmental Monitoring and Remote Sensing

Many countries face problems in monitoring plant problems and monitoring large environments, as until now, there is no accurate means of aerial monitoring through which concerned parties can benefit from watersheds, monitor large agricultural areas, and make wise environmental decisions regarding them. This paper describes a pioneering approach to develop smart agriculture using multimission drones equipped with dual cognitive modules (brains) that are powered by a machine learning (ML) framework. The first brain uses deep reinforcement learning (DRL) principles to enable autonomous flight, allowing drones to navigate complex agricultural terrain with agility and flexibility. The second brain is responsible for precise and crucial agricultural tasks: counting trees, detecting water locations, and observing and analyzing plants using the Faster R‐CNN algorithm. The system is linked with the ground station for control and command, as well as it includes an Internet of Things (IoT) infrastructure equipped with sensors that collect soil parameters, which then get sent via 5G Wi‐Fi. The dual architecture of the drones, combined with the ground‐level IoT system, creates a comprehensive framework that not only enhances agricultural technologies but also aligns with environmental conservation goals, embodying a paradigm shift towards a greener and more sustainable future. Obtained results show reasonable results with an accuracy rate of 98%.

Design and Analysis of a Hybrid Stand-Alone Microgrid

This research article presents a comprehensive investigation into the design, optimization, and performance analysis of a hybrid stand-alone microgrid for an industrial facility in Iraq at coordinates 36.51 and 43.99. The system consists of photovoltaic (PV) modules, inverters, a battery energy storage system (BESS), a generator, and AC loads. Leveraging the capabilities of PVsyst version 7.3.1, HOMER Pro version 3.14.2 and SAM version 2022.11.21 software tools, this study assesses the feasibility and functionality of the hybrid stand-alone microgrid. In this study, PVsyst software is used for detailed designing and analysis of a PV plant, and the PVsyst design file is then used in HOMER Pro software to optimize and design the proposed hybrid stand-alone microgrid, and for detailed performance analysis SAM software is employed. This paper also investigates the impact of ground clearance and ground albedo on the annual generation of bifacial PV modules at various tilt angles. Key findings include a promising normalized production rate of 4.53 kWh/kWp/day with a performance ratio of 0.815 and annual energy production estimates of 84.31 MWh (P50), 79.57 MWh (P90), and 78.24 MWh (P95) for monofacial PV modules, highlighting the system’s potential for renewable energy generation. Notably, this research demonstrates the hybrid stand-alone microgrid’s capacity to significantly reduce CO2 emissions, saving approximately 1811.6 tons over a 30-year period, thus contributing to sustainability and environmental conservation goals. Additionally, this study reveals operational challenges during the winter months, necessitating generator support to meet load demands. The successful installation and experimental validation of the hybrid stand-alone microgrid underscore its practical viability and its role in advancing clean energy solutions. This research provides valuable insights into hybrid stand-alone microgrid design, emphasizing its importance in ensuring reliable power supply and environmental stewardship.

Mapping the knowledge of ecosystem service-based ecological risk assessment: scientometric analysis in CiteSpace, VOSviewer, and SciMAT

The ecosystem services approach offers a more ecologically relevant method to establish environmental conservation goals and implement ecological risk assessment (ERA). The emergence of bibliometrics has facilitated the development of new systematic review techniques. In this study, we utilised CiteSpace, VOSviewer, and SciMAT software, based on the Web of Science database, to qualitatively and quantitatively analyse the ecosystem service-based ecological risk assessment (ESRA) literature knowledge map spanning from 1994 to 2023. This article explored the field’s evolution from macro to micro perspectives, incorporating background information, current trends, and knowledge structure. The findings demonstrate that ESRA has progressed from an initial stage to a phase of global cooperation and policy applications. This transition between stages has been characterised by a shift from focusing on natural processes to understanding human impacts on ecosystems. Key themes identified include ecosystem services, landscape ERA, aquatic ERA and ecosystem health. The overall development of ERA can be observed as a progression through different periods, namely, the traditional era, regional era, and landscape era. Currently, landscape ERA methods based on changes in land use and land cover are widely employed. The study also revealed various challenges in the ESRA field, such as data availability, scale issues, and uncertainty. Future ESRA studies should consider holistic ecosystem services, interdisciplinary approaches, ecological models, and advanced technologies to address complexity. Using big data and informatisation for research offers new opportunities but requires integration and innovation. It is anticipated that ESRA holds promise for ecological sustainability and human wellbeing.

Socio-environmental responsibility in Iranian universities: a multidimensional perspective

SummaryUniversities are expected to play a pivotal role in promoting environmental conservation goals, yet a comprehensive analysis of their actual contributions remains limited. This study delves into the perceptions of socio-environmental responsibility among faculty members within Iran’s top 13 universities. Using random cluster sampling, we collected 410 questionnaires from these institutions, evaluating socio-environmental responsibility through eight distinct variables. The outcomes unveil widespread deficiencies in responsibility across all universities, with 66% exhibiting low levels of engagement. Notably, Gorgan University of Agricultural Sciences and Natural Resources displays the lowest level, while Bu-Ali Sina University ranks highest. The research variables exhibit significant positive correlations, elucidating the interconnectedness of different aspects of socio-environmental responsibility. Furthermore, the study identifies a significant disparity in mean university socio-environmental responsibility concerning gender, although no significant relationships are found with factors such as professors’ academic rank, employment status or age. Sixteen codes are highlighted based on qualitative analysis. These findings underscore the urgency for universities to redefine their roles within the community and prioritize community empowerment, stakeholder engagement, capacity building and environmental education. By addressing these facets, universities can elevate their levels of socio-environmental responsibility and contribute more effectively to environmental conservation efforts.

Food security systems in rural communities: A qualitative study

Indonesia is rich in natural resources, but the problem of food insecurity is still a significant concern. However, few studies still examine the relationship of socio dynamics in contributing to local ecosystems to create food security. In this study, we discuss how social dynamics contribute to normative structures, community habits, and livelihoods to meet the living needs of rural communities in creating household food security and how they try to deal with worsening food insecurity through the local wisdom of rural communities. The research methodology is participatory qualitative, while data collection is through a Discussion Group Forum (FGD) and in-depth interviews with rural communities. Fifteen villages contributed to this study, interviewing 14 villagers individually, and the rest were grouped in FGDs based on livelihood categories and equal access to forest and coastal areas. Interview notes and transcription of citations were analyzed using the Thematic Framework Analysis (TFA). The study results illustrate that the village food system is vulnerable to human and natural capital. An adaptation of rural communities will experience food security difficulties when ecosystems do not provide sufficient protection due to a fluctuating climate, crop failure, and loss of household labor due to travel and health emergencies. In addition, food security is created through the dynamics of a well-maintained environment and rural local wisdom, which facilitates broad access to food provided by nature, agricultural land, marine resources, environmental knowledge, community relations, and labor. Our findings highlight the need for interventions that promote environmental conservation goals and introduce social structures that support food security.

A Blended Finance Framework for Heritage-Led Urban Regeneration

The inclusion of heritage conservation in the United Nations Sustainable Development Goals for 2030, target 11.4, stimulated a broad dialogue among heritage conservation practitioners intent on framing a meaningful role for heritage assets in historic built environments as contributors to sustainable development. Heritage-led regeneration positively impacts many aspects of society, community life, and the public realm, and can also play an important role in reaching zero-carbon environmental conservation goals by slowing the extraction of natural resources for construction, reducing the quantity of building materials sent to landfills, and using traditional technologies and knowledge to reduce operational energy use. Heritage regeneration can also be a strong contributor to economic growth, as restored and reused properties create wealth, serve as community social magnets, and attract prestige and visitors. However, there is little progress towards positioning heritage conservation as a focal point for multilateral public-private co-financing projects and partnerships. In 2021, the Cultural Heritage Finance Alliance (CHiFA) published research about successful models of urban heritage regeneration that engage public-private cooperation. CHiFA now presents a process, developed as part of a study commissioned by the Inter-American Development Bank (IDB), for advancing projects that maximize investment in heritage-led urban regeneration, matching financing strategies with local opportunities, legal frameworks, enabling tools, and the requirements of prospective investors. The result is a marketplace and ecosystem that support civic and community interests through long-term, multi-party collaboration using blended capital investment in heritage as a sustainable development strategy.

Global evaluation of inhibitor impacts on ammonia and nitrous oxide emissions from agricultural soils: A meta-analysis.

Inhibitors are widely considered an efficient tool for reducing nitrogen (N) loss and improving N use efficiency, but their effectiveness is highly variable across agroecosystems. In this study, we synthesized 182 studies (222 sites) worldwide to evaluate the impacts of inhibitors (urease inhibitors [UI], nitrification inhibitors [NI] and combined inhibitors) on crop yields and gaseous N loss (ammonia [NH3 ] and nitrous oxide [N2 O] emissions) and explored their responses to different management and environmental factors including inhibitor application timing, fertilization regime, cropping system, water management, soil properties and climatic conditions using subgroup meta-analysis, meta-regression and multivariate analyses. The UI were most effective in enhancing crop yields (by 5%) and reducing NH3 volatilization (by 51%), whereas NI were most effective at reducing N2 O emissions (by 49%). The application of UI mitigates NH3 loss and increases crop yields especially in high NH3 -N loss scenarios, whereas NI application would minimize the net N2 O emissions and the resultant environmental impacts especially in low NH3 -N loss scenarios. Alternatively, the combined application of UI and NI enables producers to balance crop production and environmental conservation goals without pollution tradeoffs. The inhibitor efficacy for decreasing gaseous N loss was dependent upon soil and climatic conditions and management practices. Notably, both meta-regression and multivariate analyses suggest that inhibitors provide a greater opportunity for reducing fertilizer N inputs in high-N-surplus systems and presumably favor crop yield enhancement under soil N deficiency situations. The pursuit of an improved understanding of the interactions between plant-soil-climate-management systems and different types of inhibitors should continue to optimize the effectiveness of inhibitors for reducing environmental losses while increasing productivity.

Influence path identification of topography, soil, hydrology and landscape on phosphorus buffering capacity in typical agricultural catchments in central subtropical China

The catchment phosphorus buffering capacity (PBF) determines the pressure-state-response relationship between anthropogenic P inputs and aquatic ecosystems at a catchment scale, and is affected by biogeochemical, hydrological, and ecological catchment characteristics. However, the complex relationship between these catchment characteristic factors and their impact pathways on PBF remains ambiguous, leading to large uncertainty in balancing agricultural productivity and water conservation via improving BF through management practices. In this study, the short-term buffering index, calculated from net anthropogenic P input and riverine P exports, was used to quantify the spatiotemporal variations in PBF in source agricultural catchments in the Dongting Lake basin. Partial least squares structural equation modeling was used to investigate the relationship between the PBF and the catchment characteristics. The results indicate that catchment PBF was directly determined by soil properties and hydrological conditions, while landscape patterns significantly mediated the effects of topography on soil and hydrology. Considering the pathway preferences of the model, landscape patterns could be the priority for characterizing and regulating PBF. According to a change-point analysis, the probability of PBF weakening increases dramatically when the proportion of farmland (Farm%) > 24.6%, degree of patch interspersion (Contagion index) < 64.5%, and Perimeter-Area Ratio Distribution (PARA) > 348.7. These findings provide new insights into catchment buffering mechanisms and can be used to promote the simultaneous achievement of agricultural production and environmental conservation goals.

Hunger and environmental goals for Asia: Synergies and trade-offs among the SDGs

Rapid progress in hunger reduction in Asia has come at the cost of environmental degradation, while pursuing environmental conservation goals risk slowing further progress on hunger. Operationalizing the Sustainable Development Goals (SDGs) shows us the complexity of achieving multiple societal goals simultaneously. The lack of coordination across sector-specific agencies responsible for various SDGs has aggravated the problem. This paper presents the challenge of seeking a nexus across the SDGs with particular reference to the SDG target 2.3., “Doubling productivity and Incomes”. A detailed assessment, with respect to South Asia, of the synergies and tradeoffs between SDG 2.3 and the other SDG targets is provided. High payoff interventions and policies for maximizing the positive linkages and minimizing the negative linkages with SDG 2.3 are discussed.

Connectivity conservation: The time is now

The theory and practice of connectivity conservation have matured, and we are now at the point where intentional, landscape-scale ecological networks are poised to play an indispensable role in the drive to protect and conserve at least 30% of the Earth’s lands and waters by 2030. Clearly, achieving the “30x30” goal is an urgent matter as a big step toward what nature needs. The stark conclusions of the latest IPCC report leave no doubt that the 2020s will be a decisive decade for the planet, and there is broad scientific agreement that the biodiversity and climate change emergencies must be met in tandem. For conservationists, this means scaling up both our thinking and our ambitions. While formal protected areas and other effective area-based conservation measures (OECMs; also referred to as “conserved areas”) form the bedrock of conservation, equally important are the connections between and among these areas. The featured theme papers in this issue of Parks Stewardship Forum explain recent advances in connectivity conservation, spelling out what has to happen to hit the 30x30 target, exploring how science and policy are aligning to support the livelihoods of local communities and human rights while contributing to global environmental conservation goals, and providing concrete examples of where and how landscape-scale conservation can be applied to meet the challenges of our time.

Ecological networks and corridors in the context of global initiatives

Ecological connectivity is defined by the United Nations Convention on Migratory Species to be “[t]he unimpeded movement of species and the flow of natural processes that sustain life on Earth.” To conserve these vital links within and across ecosystems and political boundaries, scientists, policymakers, and practitioners around the world are increasing and combining their efforts to provide consistent and focused solutions. The most recent Protected Planet Report reveals that 7.84% of terrestrial protected areas are connected to each other. This remains far short of the stated target of connecting the over 17% of the planet that is now officially protected in one way or another. Much more effort is also required to maintain, enhance, and restore ecological connectivity across the matrix of human uses outside of such areas. The importance of conserving ecological connectivity to protect biodiversity, increase resilience to climate change, and provide the host of other benefits that humans receive from nature is clear and actionable as science and policy align to support the livelihoods of local communities while contributing to global environmental conservation goals.

Land‐use intensity of official mineral extraction in the Amazon region: Linking economic and spatial data

The Amazon region has suffered considerable deforestation rates related to logging, cattle ranching, and agriculture. Recently, attention has been given to deforestation due to mining activities. This paper aims to estimate the land area affected by mining activities in protected and nonprotected areas, the value of the traded mineral extraction per commodity, and the mineral commodity with the highest trade (mineral extraction per mining area). Our results show that mining activities occupied 1,110 km2 of the Amazon, where 65% and 35% of this was due to artisanal and industrial-scale mining, respectively. Gold exploitation was responsible for 58% of the total, followed by aluminum (15%), tin (13%), and iron (8%). In the region, 47% of the total mining area was located inside protected areas, where extraction was dominated by artisanal gold mining. The Amazonian states generated US$ 12.6 billion in 2017. Analysis of the values of the traded production showed that iron was responsible for 63.6%, followed by copper (16.2%), aluminum (7.6%), and gold (6.5%). The value of the traded production of gold was relatively low (US$ 810 million) in comparison to iron (US$ 8.01 billion) and copper (US$ 2.04 billion), which occupied the smallest areas. The value of the traded production per area showed that iron ore exploitation generated US$ 91.8 million/km2, while gold generated only 1.3 million/km2. We conclude that the industrial mining of iron ore presented the lowest impacts in mining areas with higher traded mineral extraction, while artisanal gold production ran contrary to environmental conservation goals.

Compensation mechanism for damage from ecosystem services deterioration: constitutive characteristic

A growing attention of researchers and politicians to the processes of formation and implementation of the environmental compensation mechanism is fixed in the last decade. Environmental compensation has been viewed as a national or regional regulatory mechanism that contributes to balancing the goal of environmental conservation with the goals of sustainable socio-economic development. The literature on the ecosystem service has developed the terminology of the eco-compensation mechanism. Still, they do not define its functional structure within its framework, in particular, a compensation mechanism for damage from the deterioration of ecosystem services. We characterised this crucial but relatively understudied component of the eco-compensation mechanism and suggested a general formula for determining the magnitude of compensatory payments for damages from degradation/destruction of ecosystem services, which will help to improve the implementation of compensatory payments in decision-making as well as drive green economic activity.

Motivated misperception: Self-regulatory resources affect goal appraisals

Three studies examine how self-regulatory resources affect goal appraisals, finding support for the hypothesis that when low in self-regulatory resources, individuals endorse statements that rationalize either inaction or less effortful goal pursuit. Study 1 examines appraisals of self-set personal goals, finding that resource-depleted participants describe their goals as less urgent and less consequential. Study 2 examines reappraisals of weight loss goals, replicating the effects of Study 1. Finally, Study 3 examines this reappraisal process in the context of a broader societal goal of environmental conservation. This work contributes a new perspective to the large literature on resource depletion by demonstrating that depletion alters cognition in ways that may excuse the well-documented decrease in behavioral pursuit that arises from resource depletion.

Implementing sustainable business practices in a hotel and expanding green certification markets in the Midwestern United States

The hotel industry is known for catering to travellers' demands for accommodation away from home, occasionally bringing the objective to provide comfort and services into conflict with the goal of environmental conservation. Utilising a sustainable business certification previously created by the Illinois Green Business Association (IGBA) for office buildings and restaurants, a new set of hotel-specific certification standards was developed. A trial certification of one hotel was performed to ensure that the proposed IGBA standards would effectively address the unique challenges to implementing behavioural and structural changes in the pursuit of environmental sustainability. Finally, a survey of hotel patrons' preferences was performed regarding sustainable business practices in hotels. It was assessed whether those participating hotels in the certification process could anticipate a decrease in operating costs and environmental externalities by targeting several key consumption points. By demonstrating ...