scholarly journals Evaluation on the Warning-Degree of the Ecological Carrying Capacity of Guangzhou City Based on the DPSIR Model

2020 ◽  
Vol 17 ◽  
Keyword(s):  
Environmental Protection ◽  
Carrying Capacity ◽  
Evaluation Method ◽  
Evaluation Index System ◽  
Green Economy ◽  
Entropy Weight ◽  
Guangzhou City ◽  
Ecological Carrying Capacity ◽  
Comprehensive Index ◽  
The Government

Evaluation on the ecological carrying capacity is related to the sustainable development of cities. The evaluation requires a scientific, reasonable and intuitive evaluation method system. In order to evaluate the ecological carrying capacity of Guangzhou city, based on the “Driving-Pressure-State-Impact-Response (DPSIR)” model, this paper constructs a warning-degree evaluation index system for city, evaluates the ecological carrying capacity, judges the warning-degree of Guangzhou City from 2009 to 2018 by the method of entropy weight, and puts forward the countermeasures and suggestions to improve the city carrying capacity. The calculation result shows that the comprehensive index scores of the warning-degree evaluation of ecological carrying capacity of Guangzhou city are rising, the warning degree decrease from high to medium and low during the research period. Comparing each evaluation subsystem, there is a slight drop in the driving subsystem index scores, while pressure, impact and response index scores increase significantly. And the contribution proportion of each subsystem to the comprehensive index score is different. The pressure subsystem makes the biggest contribution. Therefore, Guangzhou should continue to encourage technological innovation, promote the use of clean production, implement energy conservation and emission reduction, and develop a green economy. The government should strengthen ecological and environmental protection legislation, and improve the economic policy system for ecological and environmental protection. The public should raise the environmental protection, ecological and participation awareness.

Study about the Evaluation of Ecological Carrying Capacity in Beijing Mountainous Valley Areas - A Case Study of Puwa Valley Region

2014 ◽  
Vol 962-965 ◽  
pp. 2061-2066
Author(s):  
Cui Hong Jiang ◽  
Guang Yong Li ◽  
He Qing Li ◽  
Jin Song Jia ◽  
Bo Liu
Keyword(s):  
Carrying Capacity ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Evaluation Index System ◽  
Stress Index ◽  
Coordinated Development ◽  
Comprehensive Evaluation Method ◽  
Ecological Carrying Capacity ◽  
Capacity Evaluation ◽  
Medium Level

On the basis of the ecological carrying capacity connotation and to realize the coordinated development of economics and environment in Beijing mountainous valley areas, ecological carrying capacity evaluation was discussed in order to promote corresponding advices. The comprehensive evaluation index system was built which included ecosystem elasticity level,bearing capacity index and stress index of ecotourism. The comprehensive evaluation method was constructed. The score of ecosystem resilience of Puwa valley region in 2012 was 74.6, which was more stable. The score of carrying capacity of resource and environment was 49.3 which reached medium level. The score of carrying capacity pressure was 84.2 which attained huge pressure. The score of carrying capacity system was 67.0 which was the second level. At last, this study promoted several corresponding advices.

Evaluation of Ecological Carrying Capacity in Beijing Mountainous Valley Areas – A Case Study of Lihuagou Valley Region

2014 ◽  
Vol 1073-1076 ◽  
pp. 2659-2663 ◽  
Author(s):  
Cui Hong Jiang ◽  
Guang Yong Li
Keyword(s):  
Carrying Capacity ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Evaluation Index System ◽  
Stress Index ◽  
Coordinated Development ◽  
Comprehensive Evaluation Method ◽  
Ecological Carrying Capacity ◽  
Capacity Evaluation ◽  
Resource And Environment

On the basis of the ecological carrying capacity connotation and to realize the coordinated development of economics and environment in Beijing mountainous valley areas, ecological carrying capacity evaluation was discussed in order to promote corresponding advice. The comprehensive evaluation index system was built which included ecosystem elasticity level，bearing capacity index and stress index of ecotourism. The comprehensive evaluation method was constructed. The score of ecosystem resilience of Lihuagou valley region in 2012 was 78.2, which was more stable. The score of carrying capacity of resource and environment was 71.2 which reached heavy level. The score of carrying capacity pressure was 53.3 which attained medium pressure. The score of carrying capacity system was 76.3 which was the second level. At last, this study promoted several corresponding advice.

scholarly journals Temporal Variation of Water Environment Carrying Capacity in a Highly Urbanized Region of China

Water ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 3362
Author(s):  
Zhiqing Xu ◽  
Shuhu Xiao ◽  
Cong Du ◽  
Qiyu Deng ◽  
Bingfei Yan ◽  
...  
Keyword(s):  
Temporal Variation ◽  
Carrying Capacity ◽  
Environmental Sustainability ◽  
Evaluation Method ◽  
Water Environment ◽  
Fuzzy Comprehensive Evaluation ◽  
Indicator System ◽  
Entropy Weight ◽  
Slow Growth Rate ◽  
Social Environmental

China has experienced an unparalleled urbanization process in recent decades, which has dramatically changed the water environment. Quantification of the water environment carrying capacity (WECC) is crucial given its importance to sustainable development. Existing studies have typically focused on the overall WECC system and lacked analysis of its internal features. In this study, the concepts, calculations, and classifications of the WECC were further developed. Using Nanjing, China, as a case study, we developed a hierarchical evaluation indicator system including three system layers (social, environmental and economic subsystems). We applied the entropy weight and fuzzy comprehensive evaluation method to evaluate the temporal variation tendency of WECC, and explored the deep-seated problems stemming from urbanization. The results indicated that WECC in Nanjing was 0.3045–0.5302 during 2006–2017, thus approaching a moderate grade with a relatively slow growth rate. Social, environmental, and economic subsystems increased by 29.3%, 83.1%, and 97.2%, respectively. Overall, Nanjing had a solid foundation regarding its economic subsystem, but its social and environmental subsystems were under pressure. Factors such as slow population growth as well as reduced energy and water use intensity improved WECC, whereas factors such as increased population density and excessive water consumption blocked WECC. Practical suggestions were proposed to resolve the primary problems of the WECC under urbanization. This holistic approach is urgently needed to achieve water environmental sustainability, both for Nanjing and for other emerging cities.

scholarly journals Safety Evaluation Method of Antifloating Anchor System Based on Comprehensive Weighting Method and Gray-Fuzzy Theory

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Li Jingwen ◽  
Qiao Jiangang ◽  
Dou Yuanming ◽  
Fu Xu ◽  
Liu Xiaoli
Keyword(s):  
Risk Factors ◽  
Evaluation Method ◽  
Fuzzy Theory ◽  
Underground Structure ◽  
Safety Evaluation ◽  
Evaluation Index System ◽  
Grey Theory ◽  
Entropy Weight ◽  
Weighting Method ◽  
Anchor System

The risk factors in the safety evaluation of antifloating anchor system of underground structure have the characteristics of complexity, grey, and fuzziness. Based on the Delphi method, analytic hierarchy process (AHP), and entropy weight method, this paper establishes a three-level evaluation index system based on four main risk factors and calculates the subjective and objective comprehensive weights of the index according to the comprehensive weighting method. It not only takes into account the valuable experience of the expert group but also reflects the objective impact of the subjective score on the system. On the basis of the above research, the grey-fuzzy safety evaluation method of antifloating anchor system is established by using the grey theory and the relevant theory of fuzzy mathematics. The reliability of the method is verified by an example, which has certain theoretical significance and application value.

scholarly journals Research on Evaluation of Ecological Carrying Capacity of Qinghai Province Based on PSR Model

2021 ◽  
Vol 293 ◽  
pp. 01017
Author(s):  
Xiaoyong Li ◽  
Haifa Jia ◽  
Falan Zhao
Keyword(s):  
Carrying Capacity ◽  
Comprehensive Evaluation ◽  
Entropy Method ◽  
Provincial Government ◽  
Evaluation Index System ◽  
Practical Significance ◽  
Ecological Civilization ◽  
Qinghai Province ◽  
Ecological Carrying Capacity ◽  
Index Evaluation

Quantitative research and evaluation of ecological carrying capacity in Qinghai Province is in line with the requirements of the 13th five-year plan, and is of practical significance to the construction of ecological civilization in Qinghai Province. Based on the PSR model, this paper constructs the evaluation index system of ecological carrying capacity from three aspects of pressure, state ,and response, uses the entropy method to determine the index weight coefficient, and comprehensively evaluates the changing trend of ecological carrying capacity since the 12th Five Year Plan of Qinghai Province from the perspectives of economy, society, resources, and environment. The results show that: from 2011 to 2019, the comprehensive evaluation of ecological carrying capacity in Qinghai Province shows a trend of first decreasing and then increasing, the response index evaluation increases greatly, the state index evaluation shows a fluctuating growth, and the pressure index is relatively stable. Based on this, the PSR model and entropy method are typical and quantifiable, which can provide a reference for Qinghai provincial government to control the ecological environment, study ecological sustainability and delimit the ecological red line.

An analytical method of regional water resources carrying capacity in karst area – a case study in Guizhou province, China

2016 ◽  
Vol 11 (4) ◽  
pp. 796-805 ◽  
Author(s):  
Li Bo ◽  
Wu Qiang ◽  
Chen Li-xia
Keyword(s):  
Water Resources ◽  
Carrying Capacity ◽  
Evaluation Method ◽  
Evaluation Model ◽  
Research Area ◽  
Evaluation Index System ◽  
Guizhou Province ◽  
Karst Area ◽  
Water Resources Carrying Capacity ◽  
Regional Water

The uneven temporal and spatial distributions and the unreasonable development and utilization of water resources have caused increasingly severe water resources shortage around the world. Studying on regional water carrying capacity is beneficial for the optimal management of water resources, and can provide assistance for the sustainable utilization of water resources. The typical karst area in China – Guizhou province was applied as the research area in the paper. Meanwhile, twelve indexes were selected from three perspectives including water supply, water demand and social economy to establish the evaluation index system of regional water carrying capacity. Afterwards, the analysis hierarchy process was utilized to construct the evaluation model of regional water resources carrying capacity, so as to evaluate, compare and analyze the regional water carrying capacity in each city of Guizhou province, China. This model verified the feasibility of the evaluation method. Relevant studies can provide certain theory evidence and method support for the investigation on regional water carrying capacity.

Research on the Fuzzy Comprehensive Evaluation for Social Insurance Fund Safety

2013 ◽  
Vol 281 ◽  
pp. 692-695
Author(s):  
Ying Guo ◽  
Li Quan Men
Keyword(s):  
Social Insurance ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Fuzzy Comprehensive Evaluation ◽  
Evaluation Index System ◽  
Insurance Fund ◽  
Social Insurance Fund ◽  
The Social ◽  
The Government

Assessing social insurance fund safety objectively is useful to make effective risk management and control, so as to lower the economic loss. The fuzzy comprehensive evaluation method based analytical hierarchy process(AHP) is adopted to evaluate the social insurance fund safety. And social insurance fund safety evaluation index system is established according to the characteristics of the social insurance fund safety and the development tendency of social insurance .Then AHP method is applied to determine the more reasonable index weight and the fuzzy comprehensive evaluation model is used to evaluate social insurance fund safety of three cities.Finally, some improvement suggestions are proposed. The results show that the index is reasonable and quantitative and the method can help improve the safety of the social insurance fund as well as provide decision-making for the government.

scholarly journals Quantitative Evaluation of the Eco-Environment in a Coalfield Based on Multi-Temporal Remote Sensing Imagery: A Case Study of Yuxian, China

2019 ◽  
Vol 16 (3) ◽  
pp. 511 ◽  
Author(s):  
Xue Wang ◽  
Kun Tan ◽  
Kailei Xu ◽  
Yu Chen ◽  
Jianwei Ding
Keyword(s):  
Quantitative Evaluation ◽  
Carrying Capacity ◽  
Evaluation Method ◽  
Evaluation Model ◽  
Mining Area ◽  
Vegetation Coverage ◽  
Landsat 8 ◽  
Ecological Carrying Capacity ◽  
Landsat 7 ◽  
Environment Index

With the exploitation of coalfields, the eco-environment around the coalfields can become badly damaged. To address this issue, “mine greening” has been proposed by the Ministry of Land and Resources of China. The sustainable development of mine environments has now become one of the most prominent issues in China. In this study, we aimed to make use of Landsat 7 ETM+ and Landsat 8 OLI images obtained between 2005 and 2016 to analyze the eco-environment in a coalfield. Land cover was implemented as the basic evaluation factor to establish the evaluation model for the eco-environment. Analysis and investigation of the eco-environment in the Yuxian coalfield was conducted using a novel evaluation model, based on the biological abundance index, vegetation coverage index, water density index, and natural geographical factors. The weight of each indicator was determined by an analytic hierarchy process. Meanwhile, we also used the classic ecological footprint to calculate the ecological carrying capacity in order to verify the effectiveness of the evaluation model. Results showed that the eco-environment index illustrated a slowly increasing tendency over the study period, and the ecological quality could be considered as “good”. The results of the evaluation model showed a strong correlation with the ecological carrying capacity with a correlation coefficient of 0.9734. In conclusion, the evaluation method is a supplement to the time-series quantitative evaluation of the eco-environment, and also helps us to explore the eco-environment in the mining area.

Electricity Competitiveness Evaluation Research Based on Principal Component Analysis

2014 ◽  
Vol 960-961 ◽  
pp. 1467-1472
Author(s):  
Dong Xiao Niu ◽  
Qiong Wang ◽  
Peng Wang ◽  
Shu Yi Zhou ◽  
Wei Dong Liu ◽  
...  
Keyword(s):  
Principal Component Analysis ◽  
Evaluation Method ◽  
Evaluation Research ◽  
Correlation Method ◽  
Principal Component ◽  
Component Analysis ◽  
Evaluation Index System ◽  
Index Method ◽  
Comprehensive Index ◽  
Comprehensive Index Method

This paper constructs the evaluation index system of electricity competitiveness in terminal energy consumption, evaluates the electricity competitiveness in Ningxia region from 2005 to 2011 using principal component analysis (PCA), and compares the evaluation results of PCA, the linear weighted method, the comprehensive index method and TOPSIS-grey correlation method. The compatibility degree and difference degree of each method are analyzed and calculated to verify the applicability of the PCA. The results show that PCA is the most scientific and appropriate evaluation method.

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