Environmental Bearing Capacity Research Articles

The study on spatial distribution of water ecological environment carrying capacity during extreme drought conditions

Due to global warming and the disturbance of the interannual variability of precipitation, the frequency of extreme drought events has increased. The impact of global climate change on water resources is becoming increasingly apparent, then it is particularly necessary to explore the carrying capacity of water ecological environment under extreme drought conditions, which can guarantee the ecological water security in river basins. This study takes the Guanzhong area of the Wei River Basin as an example, calculating the water environment carrying capacity of 40 areas in the Weihe Guanzhong area in different levels of years under extreme drought conditions by comprehensive evaluation model of carrying capacity and using geographic information system GIS to display the spatial distribution of water environment carrying capacity in 40 regions. According to the results of the spatial distribution of water environmental bearing capacity, four different schemes are designed to improve the bearing capacity. The first plan reduces the industrial water consumption and irrigation quota by 5%, the second plan increases the industrial water and sewage treatment rate on this basis. the third plan further improves the development and utilization rate of surface and groundwater, and the fourth plan, on the basis of the first three plans, supplies 600 million cubic meters of industrial and agricultural water to Guanzhong region. Through comparative analysis, without taking any measures, under the extreme drought conditions, the water environment carrying capacity of the 40 areas in Guanzhong is all in an unbearable state. Overall, plan 4 has the most significant improvement in the water environment-carrying capacity, especially the Dong zhuang Reservoir of the Jing River which has played a very important role in enhancing the water ecological environment carrying capacity of the downstream water of the Wei River.

Evaluation of Sustainable Potential Bearing Capacity of Tourism Environment Under Uncertainty: A Multiphase Intuitionistic Fuzzy EDAS Technique Based on Hamming Distance and Logarithmic Distance Measures

Evaluation of Sustainable Potential Bearing Capacity of Tourism Environment Under Uncertainty: A Multiphase Intuitionistic Fuzzy EDAS Technique Based on Hamming Distance and Logarithmic Distance Measures

Clinical comprehensive evaluation of Jinsang Liyan Pills/Capsules in treatment of chronic pharyngitis

According to the Guidelines for clinical comprehensive evaluation of Chinese patent medicine(2022 version), this study comprehensively compared the clinical value of Jinsang Liyan Pills/Capsules with that of another commonly used Chinese patent medicine(drug A).(1)Effectiveness: Jinsang Liyan Pills/Capsules had antimicrobial, anti-inflammatory, and pain-relieving effects and can improve the total response rate in the treatment of chronic pharyngitis. Moreover, they took effect faster than the control group.(2)Safety: Jinsang Liyan Pills/Capsules did not cause acute toxicity and long-term toxicity, with low incidence of adverse reactions, which were mild and alleviated after drug withdrawal. Therefore, the risk of Jinsang Liyan Pills/Capsules was under control.(3)Economy: Jinsang Liyan Pills/Capsules had lower cost per course of treatment than drug A. The incremental cost-effectiveness ratio(ICER) of Jinsang Liyan Pills combined with Jinsang Qingyin Pills was-39.97 yuan compared with conventional treatment. The ICER of Jinsang Liyan Pills compared with amoxicilin was 0.01 yuan. The results meant that Jinsang Liyan Pills/Capsules had a cost-effectiveness advantage.(4)Innovation: Jinsang Liyan Pills/Capsules had reasonably formula and wide indications, meeting the clinical needs. Moreover, they had been authorized four patents of advanced manufacturing technology.(5)Suitability: the storage and administration of Jinsang Liyan Pills/Capsules were convenient, with clear instruction of medication.(6) Accessibility: Jinsang Liyan Pills/Capsules had sufficient drug reserve, caused low economic burden of patients, and presented environmental bearing capacity. Finally, Jinsang Liyan Pills/Capsules were scored 79.10 points, and drug A 67.93 points. The experts reached the consensus of grade A for Jinsang Liyan Pills/Capsules, which can be directly converted into decision making. The result of this comprehensive evaluation of Jinsang Liyan Pills/Capsules highlight the clinical advantages in the treatment of chronic pharyngitis and lay a foundation for the standardized research on the clinical basic research of the drug in the future.

Fisheries Water Quality Monitoring Improvement System

In this paper, the system of dynamic identification and monitoring of water bodies and intelligent allocation of pharmaceutical discharge is designed. At present, aquaculture technology in our country is relatively traditional, and the water environment-bearing capacity will often be ignored. This paper aims to realize the efficiency of equipment in the multiple stages of aquaculture through the design system, the remote control of motion software device, and strive to combine intelligent equipment and the basic process of aquaculture, so as to make the aquaculture industry gradually upgrade. Through the test, our device can dynamically identify and detect the water body, and ensure the fishery output and water quality at the same time, bringing economic and environmental benefits to a great extent.

Methods of improving rural water ecological environment and promoting the development of ecological economy from the perspective of the digital economy

Abstract With the liberation of productive forces and the rapid development of cities, the development of rural areas is very fast, and the pace of rural industrialization and urbanization is also accelerating. However, with the rapid development of the economy, the rural ecological environment has also been greatly affected. Based on the literature and field investigation, the paper made a thorough analysis of the water environment and pollution in rural areas and used the water environment-bearing capacity pressure model to analyze the current problems in rural areas. Economic development is at the cost of the ecological environment. The higher the level of economic development, the greater its impact on environmental carrying capacity. Based on the above analysis, this paper proposed rural water resources carrying capacity system based on ecological carrying capacity and organically combined it with the theory of system and ecological carrying capacity to evaluate it. According to the current situation of water pollution in rural areas, this article preliminarily discussed and put forward corresponding countermeasures.

Resource Carrying Capacity Evaluation Based on Fuzzy Evaluation: Validation Using Karst Landscape Region in Southwest China

The problems of regional resource shortage, fragile ecological environment and unbalanced social development are becoming increasingly serious. There is an urgent need for rational evaluation and planning of resources and the environment. This paper presents a fuzzy comprehensive evaluation method combined with Analytic Hierarchy Process (AHP) and shortcoming element evaluation to analyze the resource and environmental bearing capacity of a certain region. The proposed model was verified by backing data analysis from a karst landscape region in southwest China. Short board element analysis was employed for further study. The results show that (a) the calculation results of the evaluation system used in this paper are consistent with the actual situation. The method can be effectively used in the field of resource and environmental carrying capacity evaluation. (b) The environmental carrying capacity is the largest in this region, followed by the resource carrying capacity, and the socio-economic carrying capacity is the smallest. (c) The region has a sufficient environmental carrying capacity on the whole, the resource conditions are weak and the socio-economic development is backward. The analysis of the evaluation results provides a scientific basis for the rational use of resources, territorial spatial planning, sustainable socio-economic development and ecological environmental protection strategies in karst mountainous areas.

A new method for subsea tunnel site selection based on environmental bearing capacity.

Engineering site selection is an essential and systematic work in the early engineering construction stage. At present, the subsea tunnel site selection mainly depends on manual experience. There is still a lack of subsea tunnel site selection systems based on environmental impact. This study develops a comprehensive site selection evaluation system based on the analytic hierarchy process (AHP) and fuzzy evaluation method for the subsea tunnel site selection. It is a multi-indicator mathematical model evaluation system. On this basis, the ecological site selection method of the subsea tunnel is further studied, an indicator system for evaluating the environmental carrying capacity of the island is established, and the site selection results of the subsea tunnel based on the environmental indicators are obtained. We compared the site selection results of the two methods. The results show that the conventional method and the ecological site selection method based on environmental indicators can well carry out the site selection of subsea tunnels. The two methods take into account both the overall and local optimum of the subsea tunnel route and organically combine the overall and local objectives. This way provides a reference for the design and construction of the subsea tunnel in the future and points out the direction for the site selection of other large-scale projects with significant environmental impact.

Research on the Evolutionary Path of Eco-Conservation and High-Quality Development in the Yellow River Basin Based on an Agent-Based Model

The high-quality economic and social development of the Yellow River Basin is a combined system comprising the coordinated development of “economy–resources–environment–society”, with resources and the ecological environment bearing capacity as the constraints, and green innovative development as the driving force. Based on the systematic analysis of the structural dimensions of the composite system, this paper uses the balanced indicators and their coordinated development effectiveness to describe the development quality of the macro-composite system. In order to reveal the mechanism of the evolutionary path of the macro system, the resource- and environment-bearing capacity, regional high-quality development potential, regional innovation capacity, and high-quality development guarantee capacity are adopted as the main attributes and decision-making basis of the autonomous agents. The simulation results show that, under the existing development model, the economic development of all of the provinces in the Yellow River Basin will be constrained by resources and the environment. However, different policy scenarios significantly affect the evolutionary trends of economic development, resource consumption, and the environmental pollution situation. The mechanisms to overcome the bottleneck of the resource and ecological constraints are different for these policies, and the effects of the same policy in different provinces are also not the same.

Study on acquired infection of patients in waiting space of fever clinic

Since the COVID-19 outbreak, high numbers of patients with respiratory symptoms flock to fever clinic, cause overcrowding. Due to relatively densely populated space and the existing ventilation strategy, lead to space environment bearing capacity lose efficacy. The patients in waiting space are faced a high risk of cross infection. Thus, it must be strictly controlling the personnel density and fresh air dilution level, prevent SARS-COV-2 transmission though aerosols. This study takes the fever clinic of 3A Grade Hospital case, based on the monitoring results of CO2 concentration and the transport of exhaled pathogenic aerosols, predict the waiting patient’s cross infection risk in crowded space. Computational fluid dynamics simulations and agent social force behaviour model were used. When the number of fever clinic reaches the upper limit of theoretical capacity, under the three ventilation types, average exposure risk in different areas of waiting space were studied. Results show that when the infector is located at the front of the waiting corridor (upwind direction of natural ventilation), when there is only natural ventilation, the difference of average intake fraction in the three areas of waiting space is small, that is, the correlation between distance and exposure is small. Our results also show that when ceiling air conditioner ventilation and natural ventilation are coupled, the dilution effect is significantly lower than that of natural ventilation in the front and rear area, and higher than only run mechanical ventilation.

An ecological environmental carrying capacity estimation of tourist attractions based on structural equation

In order to solve the problems of high average absolute error and low accuracy of index weight calculation in traditional methods, an estimation model of ecological environment carrying capacity of tourist attractions based on structural equation was designed. Structural equation model is adopted to define the tourist scenic spot ecological environment bearing capacity estimation indicators of potential variables and show in the variable, based on the variable data to build the coupling model of ecological carrying capacity, establishing ecological environmental bearing capacity index system, index weight is obtained by using the entropy weight method, in order to build capacity estimation model, input variable data into the model of bearing capacity estimation. Experimental results show that the index system established by the model has a high goodness of fit with the model, the average absolute error of index weight calculation is low, and the calculation accuracy is up to about 95%.

Real-Time Wireless Sensor Network-Assisted Smart Tourism Environment Suitability Assessment for Tourism IoT

In this paper, we conduct an in-depth study and analysis of the suitability of real-time wireless sensor network-assisted smart tourism environment for tourism IoT and evaluate its suitability. We use nodes in wireless sensor networks as relays and collaborative transmission using mutual information accumulation. Using riteless codes, nodes can accumulate information in advance to decode out the original text. Due to the mobility of mobile robots, the planned routing paths can fail quickly, so we propose a dynamic mutual information accumulation collaborative transmission algorithm. For both cases of information transmission from the cloud to the robot and from the robot to the cloud, we dynamically acquire routing paths using neighbour search and chance transmission, respectively. Experimental results show that our dynamic mutual information accumulation collaborative transfer algorithm has lower time complexity and latency. We use a cooperative transmission algorithm with mutual information accumulation, because wireless transmission has the nature of broadcasting, and all neighbour nodes can receive part of the information when the sender starts to transmit information. Riteless codes are used in single-hop transmissions to improve the probability of successful transmissions. Since transmission failure requires waiting for the next neighbour to wake up, which consumes a lot of energy and time in a low duty cycle environment, using riteless codes to improve the transmission success rate of single-hop transmissions can effectively improve the global transmission efficiency. Experimental results show that the opportunity routing algorithm using riteless codes has lower delay and energy consumption. The two major systems, surface, and underground are used to quantitatively measure 23 indicators in five subsystems, including geological environment, soil and water environment, sensitive geological bodies, groundwater resources, and mineral resources, to evaluate the two-way grade of underground space development suitability, revealing the comprehensive bearing characteristics of the study area with an overall high bearing capacity of underground space resources and environment and an overall surplus of bearing status.

Research on Eco-geological Environment Carrying Capacity Based on GIS Technology

The environmental carrying capacity is also called environmental bearing capacity. The eco-geological environment carrying capacity is the limit of the environmental capacity to support human society and economic activities under a certain environmental condition in a certain period of time, combined with the factors of the ecological environment, the geological environment, and the socio-economic environment, it is an important basis for developing resources. Resources and the environment are the basis for human survival and development, with the development of society and the development of resources, the carrying capacity of resources and the environment in many areas has exceeded the limit, which has caused many environmental problems. Therefore, this paper studies the ecological environment carrying capacity based on GIS, hopes to provide some guidance for environmental protection.

Spatial suitability evaluation of coastal zone, and zoning optimisation in ningbo, China

Coastal zones are affected by ocean–land interaction and furthermore, are areas of intense human activity. Exploitation and utilisation of coastal zones directly affect the sustainable development of coastal cities; therefore, it is necessary to conduct space suitability evaluation of such areas to facilitate the rational allocation and sustainable development of coastal resources. In this study, we selected the following factors for a relevant evaluation index, namely land and ocean natural conditions, resource and environmental bearing capacity, exploitation intensity, economic foundation, and social structure. We constructed a guidance and constraint model to evaluate the land and marine spaces of the coastal zone and, subsequently, established criteria for land–sea coordination and integration to facilitate optimum utilisation of coastal zones. Finally, we established an optimal land-use allocation model and relative deviation index to evaluate the scientificity and feasibility of our results. Taking the coastal zone of Ningbo in Zhejiang province, China, as an example, our results showed that (1) The ecological space comprises 5984 km2, accounting for 49.58% of the coastal zone in Ningbo, urban and construction space comprises 997.76 km2, accounting for 8.27%, and agriculture and fishery space comprises 5088.15 km2, accounting for 42.16%, with the ratio of the three types of space being 5:4:1. (2) Generally, the development intensity of the coastal zone in Ningbo is strong in the north and weak in the south, and the overall spatial pattern is urban exploitation in the north, industrial and port traffic areas in the east, and ecological, agricultural, and fishery areas in the south. (3) The relative deviation index of urban and construction space is 1.21, the planned land use exceeds the reasonable demand, the relative deviation indices of ecological space and agricultural and fishery spaces are 0.13 and −0.08, respectively, with the land area showing a decreasing trend. Clearly, development in the coastal zone in Ningbo is too intense. Consequently, it is necessary to strengthen the management and control of land use in this coastal zone to protect its ecological, agricultural, and fishery resources.

Evaluation Of Water Environmental Carrying Capacity In Xi’an City

Based on the analysis of xi’an’s water resources, this paper constructs the evaluation index system of Xi’an’s water environment carrying capacity. The coefficient of variation method and the bearing capacity model of each evaluation index were used to calculate the weight of each index and the bearing capacity of each index, and then the bearing capacity of the water environment of Xi’an city was calculated according to the original value of each index and the method of “module addition”, and then the variation trend was analyzed, the deficiency was pointed out and the improvement measures were put forward.

青藏高原国家公园群地域功能与结构研究

PDF HTML阅读 XML下载 导出引用 引用提醒 青藏高原国家公园群地域功能与结构研究 DOI: 10.5846/stxb202005061121 作者: 作者单位: 作者简介: 通讯作者: 中图分类号: 基金项目: 第二次青藏高原综合科学考察研究（2019QZKK0401）；中国科学院战略性先导科技专项（A 类）子课题（XDA20020302）；三江源国家公园联合研究专项（LHZX-2020-05） Regional function and spatial structure of National Park Cluster in Qinghai-Tibet Plateau Author: Affiliation: Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:青藏高原国家公园群建设是促进青藏高原地区可持续发展的重要模式探索。解析地域功能、建构有序的空间组织模式是其关键科学基础。基于青藏高原科学考察研究队提出的国家公园群建设方案，从地域功能和空间结构上进行了探讨。研究认为青藏高原国家公园群具有生态保育功能、生活保障功能和游憩公益服务功能，并表现为空间异质性、时间变异性、多样复合性和相互依附性4种特性；在层级结构上可以划分为2个跨国国家公园、8个旗舰国家公园和11个一般国家公园，未来可再融入青藏高原其他不同层级的自然保护地；从"群"层面优化单体国家公园的功能定位和整体层面的有机组织，需要在类型结构、层级结构和空间结构上进行综合统筹，建构点域、线域、面域相结合的空间组织模式，形成联系紧密、发展稳定、演化有序的功能有机体，才能够深入推进青藏高原国家公园群建设、生态安全屏障建设和区域绿色发展的三位一体目标实现。 Abstract:The construction of the Qinghai-Tibet Plateau National Park Cluster (QTPNPC) is an important model for promoting the sustainable development of the Qinghai-Tibet Plateau. Analyzing the regional function and building an orderly spatial organization pattern are key guarantees to promote sustainable development. This study proposes the QTPNPC construction plan based on scientific investigation of the Qinghai-Tibet Plateau and provides an in-depth study on regional function and structure, which is necessary to construct a new group of QTPNPC with a wholesome and integral relationship among ecological conservation, life security, and tourist service functions. Understanding the spatial heterogeneity, time variability, and diverse compounds of the national park cluster is necessary. In terms of the hierarchical structure, it can be divided into 2 transnational national parks, 8 flagship national parks and 11 general national parks. In the future, it can be integrated into other nature protected area in the Qinghai-Tibet Plateau region to form a highly integrated park utilization system. Four primary and mutually dependent characteristics are group-level monomer optimization; national park function, orientation, and organic organization; type, hierarchical, and spatial structures; and integration through domains, lines, and points on three levels. The spatial organization mode is created to allow the QTPNPC to form functional organisms that are closely connected, to steadily develop and evolve in an orderly manner. In construction we need to develop advantage of monomer national park, establish an effective connection among the resource environmental bearing capacity and the national spatial development suitability evaluation, on the basis of comprehensive consideration of ecological importance and vulnerability, the ecosystem services value, according to the actual situation of different national park, thus forms the different characteristic paths. In accordance with the overall goal of the construction of the QTPNPC, we need to explore institutional innovation schemes, legislative systems and construction regulations for national parks, promote the realization of regional functions from the aspects of community development mechanism, franchise operation mechanism, recreation service mechanism and ecosystem product value-added system, and constantly improve the spatial governance system of natural protected areas on the Qinghai-Tibet Plateau, and to promote the construction of an ecological security barrier on the Qinghai-Tibet Plateau and the green development of the region. 参考文献 相似文献 引证文献

Optimization Research of Regional Distribution of Hainan Agricultural Industry Based on Comprehensive Comparative Advantages

Based on the statistical data of 18 cities or counties in Hainan from 2011 to 2018, this research comprehensive utilize agricultural production comparative advantage and environmental comparative advantage to build a comprehensive comparative advantage system, guide the optimization of Hainan's agricultural industry layout. The result show that the comprehensive comparative advantages and environmental bearing capacity of Sanya, Qionghai, Wanning, Baoting and Qiong Zhong are bigger than 1, have significant advantage in agricultural production; And the comprehensive comparative advantage of Ding'an, Tunchang and Ledong is bigger than 1, but the environmental carrying capacity is between 0-1, so they are medium advantage zone of agricultural production; The comprehensive comparative advantages and environmental carrying capacity of Haikou, Wenchang, lin'gao, Danzhou, Dongfang, Lingshui and Changjiang are all between 0-1, are disadvantaged area of agricultural production. According to the evaluation results of comprehensive comparative advantagesw, the following optimization paths are proposed, firstly, it is proposed to improve the significant advantages zone, and limit the scale of low efficiency and high consumption of agricultural products in medium advantages zone, and adjust the industrial structure and layout of the disadvantaged zone. Secondly it is proposed to promote the production mode of comprehensive development of agriculture, forestry, animal husbandry and fishery. Thirdly, it is considered of multi compliance of the impact of planting, animal husbandry and fishery layout on the environment. Then the pollutant discharge in agri-production should be strengthening controlled. Finally, this research puts forward some policy suggestions to support the optimization of regional layout of agricultural industry.

Evaluation Index System Construction for Geological Environmental Bearing Capacity and Its Application in Henan Province, China

Evaluation Index System Construction for Geological Environmental Bearing Capacity and Its Application in Henan Province, China

Study of sustainable development in Yongkang city based on environmental capacity and pollutant control

Over the past centuries, due to the improvement of the understanding of the natural environment and social service function of rivers, many countries have started the research and practice of water environment protection. China also paid most of its attentions to the water environment in most of its cities and towns. Systematic calculation and analysis of the water environment status becomes famous in most of Chinese regions, which not only shows the current status of water environment protection in China but also indicates the methods to reduce the domestic pollution. In this study, Yongkang city is selected as a typical Chinese city, COD(Chemical Oxygen Demand) and NH3-N(Ammonia Nitrogen) are considered as two typical pollutants, both water environmental capacity and current pollution are calculated. The environmental bearing capacity coefficient is utilized to show the current status of pollution level. The comparison and analysis between the water environmental capacity and current pollution shows a good water quality status in Yongkang city. This study is also able to further improve the water quality and social development in Yongkang city in the future.

Evaluation of Geological and Ecological Bearing Capacity and Spatial Pattern along Du-Wen Road Based on the Analytic Hierarchy Process (AHP) and the Technique for Order of Preference by Similarity to an Ideal Solution (TOPSIS) Method

As China is a mountainous country, a large quantity of the population has to live in mountainous areas due to limited living space. Most of them cluster along roads in areas with relatively poor traffic conditions. In view of the spatial-temporal change of complex geological and ecological environment along the roads in the mountains, this paper takes the Dujiangyan- Wenchuan (Du-Wen) Road as the research object, and puts forward a method to evaluate the bearing capacity of regional geological and ecological environment based on the evaluation of quality and spatial coupling of bearing capacity. For the needs of the current research, a total number of 20 indicators from three aspects of geological, ecological, and social attributes were selected to carry out the assessment. Based on the GIS platform and evaluation index system, the weight of each evaluation index factor is determined by Analytic Hierarchy Process (AHP). The comprehensive quality of bearing capacity is calculated by the Technique for Order of Preference by Similarity to an Ideal Solution (TOPSIS) algorithm through weighted superposition, which comes to result in the evaluation of geological, ecological, and social environment. Afterward, the bearing capacity of the study area is classified, combining the results of hot spot analysis. The study shows that the spatial distribution of geological, ecological, and socio-economic bearing capacity in this area is highly aggregated, with 31.12% of the area to be classified as suitable construction area, 31.98% as backup reserve area, and 36.79% as unsuitable construction area. The studied triangle area, composed of Yingxiu Town, Xuankou Town, and Dujiangyan City, presents a large area of a high-valued aggregation area, with comprehensive high quality bearing capacity and spatial aggregation, which is better for planning and construction.

Early Warning of the Tourism Environmental Bearing Capacity in the Desert Scenic Area: A Case Study in Shapotou, Ningxia, China

Early Warning of the Tourism Environmental Bearing Capacity in the Desert Scenic Area: A Case Study in Shapotou, Ningxia, China