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In recent years, under the action of multiple stress factors, such as global change, ecological function decay, extensive production, natural disasters and sudden environmental events are showing a rising trend , the ecological high-risk characteristics which is an inevitable process of industrialization is initially apparent in our country. So that, based on the analysis of regional ecological carrying...
In this paper, dynamic analysis of Beijing water resources management is studied by forecasting method. First, the condition of water resources of Beijing is introduced. Second, the model of the water resources forecasting in Beijing is constructed from two aspects, i.e., supply side and demand side. Finally, some management insights and suggestions are presented based on the dynamic analysis.
City eco-security early-warning evaluation indicator system of Liaohe River watershed based on Pressure-State-Response (P-S-R) was established, and on the basis of which, city eco-security early-warning model of resources-population-economy-society-environment composite system was built in this paper. This research adopts a combination assessment methods, simulates a series of eco-security early-warning...
Guangzhou has been experiencing rapid urbanization while it also faces great challenges in resouces utilization and environment protection. The concept of eco-environment carrying capacity(ECC) is employed to describe and evaluate these challenges. First, population carrying capacity of water resources and land resources are respectively estimated, and then a comprensive evaluation model is established...
Water environmental carrying capacity was related to economy,society,resource, environment, technology and management. Three indicators and fifteen variables were selected as the evaluation index, the three indicators including sustainable capacity of resource, assimilative capacity of environment and optimal allocation capacity of social economy. A comprehensive evaluation model of water environmental...
This study chooses environment subsystem, population subsystem and economy subsystem as evaluate dimensionalities of water environment system in the city. We propose an evaluation model through establishing the evaluation index of above subsystems, and weights of indexes are fixed by AHP method. The water environment carrying capacity in Jinan is taken as an empirical subject. Results of the analysis...
Chongqing is not only the unique municipality in western China, but also an important economic growth pole and the economic center of Yangtze River. The empirical analysis from 2001 to 2008 shows the value and trends of Environmental and economic benefits, environmental and economic co-ordination degree, comprehensive assessment index of coordinated development showed a steady growth year by year...
As groundwater resource in irrigation district is affected by many factors,evaluation of groundwater carrying capacity is a multi-objective optimal problem.A multi-objective quantitative evaluation model was established, which included four objectives,i.e.,GDP, grain yield, population and COD emissions. The improved Differential Evolution (DE) algorithm was built and adopted to solving the multi-objective...
The fast urbanization in Chongqing has had a great impact on the environment and resources. The water resource has been recognized as one of the key elements to the sustainable development of this region. This paper presents a method of predicting the regional Water Resource Carrying Capacity (WRCC) using the supply-demand balance model. The method predicts that the WRCC of Chongqing is from 110 million...
Considering the uncertain feature in assessment, a new assessment model based on cloud theory that can realize greatly the conversion from qualitative conception to quantitative model is established. Evaluation model based on cloud theory can not only show the fuzzy feature of grade, but also indicate random attribute of the degree by hyper entropy. Take the assessment model into evaluation of water...
The increasing water demand directly results in the dwindling water supply in many cities of China. Water price plays an important role in the manage of urban water supply. The policy of laddered water price can reach the objective of water commodity pricing and establish the effective mechanisms with the core of water-saving, but it will face a practical problem due to for the lack of theoretical...
On base of analyzing the situation of recycling economy of coal enterprises and establishing the principle of indication system, an evaluation-index system was established, which included four levels structure (economy development, resource utilization, social development and recycling system) and twenty-two indications. According to comparing all kinds of methods of recycling economy, and considering...
This paper constructed the ecosystem comprehensive evaluation index system framework using driving force-pressure-state-impact-response (DPSIR) conceptual model. The evaluation model is established using modified G1 model to determine the index weights. Also, the paper makes empirical analysis on ecosystem of China during 2001 to 2007.The contribution characteristics are as follow. Firstly, the paper...
We first present theoretically that local economic development on the one hand, would result in a fragile ecological environment, waste use of water resources and lead to increase of disaster losses; on the other hand may enable government to take measures to prevent disasters and reduce the drought risks; next we take North China as a case and adopt panel data to analyze impact of national income...
Based on the actual urban residential water demand of Xi'an, the Radial Basis Function (RBF) artificial neural network was used to forecast the urban residential water demand. RBF artificial neural network model was employed based on two input variables of population and Gross Domestic Product (GDP), one output variable of urban residential water demand. The performances in RBF forecasting of different...
Economy, society, environment and resource interact each other and constitute a complex system. Analytical hierarchy process (AHP) is a popular and powerful method for solving different problem of complex system. This paper presents an indicator system with hierarchical structure upon AHP to evaluate the status of sustainable development as an example for Shaoyang. In this research, we (1) discuss...
The rapid economic development has brought great change to the city of Beijing, and the living water demand is an important concern during the process of the booming urbanization. In this paper, the influence of urbanization on the citypsilas living water demand is analyzed. The indexes indicating urbanization were carefully chosen, and by studying the historical data of the city living water demand...
The paper discussed the optimum uses of water resource in a city based on social-economic-environmental (SEE) complex system by applying system dynamic model, which fully considered the interactions and interrelations amongst each element in the SEE complex system. The SD model can be used to estimate the overall development trends based on the current development status, and then relevant information...
Forecasting water resources demand is being a component of integrated water resources management promotes and balances efficiency, equity and sustainability objectives for management and allocation of water resources. This article introduces the ITHINK software for the forecasting water resources demand studies. System Dynamics is an analytical study information feedback system, the understanding...
This paper use the concept of matter-element and correlation function to establish a prediction model based on the extension of the cluster, and apply the model to forecast the wastewater emissions. Applied results show that this method is scientific and reliable.
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