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Farming-pastoral zone is one of typical ecological transition zone in China. To monitor and evaluate the ecological security in farming-pastoral zone is of great significance for regional environmental protection and rational utilization. This paper chooses Guyuan County as the research area, which is in typical farming-pastoral zone area named Bashang in north China. Then, in the administrative divisions...
Due to the disaster factors that influence the ecological security of Mining cities, risk measurement and fuzzy optimization theories are used, and an assessment indicator system based on potential factors and a fuzzy iteration model about ecological security of Mining Cities are presented in this paper, from the point of safety and disaster concepts. Finally, a case is applied in the appraisal of...
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...
A computational model of multi-scale population densities was developed based on the native population database of Shijiazhuang city. The model comprises four parts: data processing, down-scaling, data format conversion and up-scaling. Down-scaling was completed by apportioning village population to each street block. The vector dataset of block population was converted into 100m×100m grid dataset,...
Three cities with different degrees of urbanization in developing countries of Asia-Pacific region are selected as the study areas, They are Zhangjiagang city in China, Dehradun in India and Hanoi in Vietnam. In this paper, data was collected concluding nearly a decade of remote sensing data, population, economic data and other relevant information. We studied land-use and land-cover change (LUCC)...
Take Changzhutan urban agglomeration as a sample to analysis the planning method of coordinating the land use of the cities based on the ecological footprint analysis. In this thesis, the comprehensive measure of ecological carrying capacity of cities and the ecological environment's overall development in urban area are the two significant aspects to the eco-planning of urban agglomeration. And then...
With the acceleration of urbanization, urban ecological environment is facing increasing pressures. The ecological environment problems have become important bottlenecks of blocking urban sustainable development. Taking Jinan city as a case study, this paper first studies the land use change which is impacting urban ecological environment, then it makes the comprehensive evaluation on urban ecological...
The deterioration of ecological environment has aroused broad attention. This paper constructed an urban ecological security warning assessment index system. The index system was composed of vigor, organizational structure, resilience, maintenance of ecosystem service and human health. Then it established an assessment model of urban ecological security warning based on fuzzy matter-element theory...
In recent years more and more cities are planning to construct crime preventing systems in order to reduce the loss caused by risks. There are many kinds of crime preventing systems with different variety and price in the market so far. It is the problem that each decision-maker faces jointly that how to select a crime preventing system for a city which would be a perfect fit. From the stand point...
Police Patrol is a very useful method for managing the social security. Many researches focus on how to obtain the best strategy for police patrol. We got this research topic from The Sixth National Post-Graduate Mathematical Contest in Modeling. In the proposed approach, Greedy Policy and Randomized Strategy are combined with Genetic Algorithm to solve these problems, simulation result shows the...
The land is foundation of human survival and development, land sustainable use is related to human survival and development. Taking Daqing City as an example, the paper constructs evaluating indicator system basing on the characteristics of Daqing's land. Combining the entropy theory and the matter-element to construct the evaluate model, the paper evaluates the land sustainable use degree with macroscopic...
Housing security is one of the main content of public services. According to performance every area of our country, the way and level of housing security has nothing in common with each other. In this paper, the factor analysis model is established to identify the key factors of the level of urban housing security. And then, cluster analysis model is constructed to research the regional difference...
At present, because of different environment among cities, enhance liquidity of the labor force between different cities. At the same times, housing price is the main expense of resident flowing between cities, which stands for the willingness to pay for the urban environment. Through the demonstration of 35 major cities in this research, it shows that the urban environment dominates the urban housing...
Due to climate change issues, fossil fuel depletion and increasing economic pressure, "smart" cities will have significantly altered physical, social and economic systems, built upon smart infrastructure. Key infrastructure is energy, with focus on electricity. The paradigm of physical, data transfer and information flow layers of the smart city power grid is shown. Challenges of the new...
Water resources carrying capacity (WRCC) is an index, which reflects the supporting ability of the water resources system for sustainable society development. And it is the foundational measurement of water resources security, also it is a complex system which involves social-economic system, water resources system and ecological environment system. Pointing to the problems on vague concept about...
Ecological Security Assessment is a new field in Sustainable Development study. In order to curb the deterioration of the ecological environment, we should conduct timely researches on the comprehensive evaluation of ecological security, which is recognized as the most powerful method to protect the regional economy effectively. Based on the sequence data of 1987, 2000 and 2005, the study takes Hebei...
Qingxin County is a typical transition area between the Pearl River Delta and north Guangdong. To explore the ideal land use pattern of Qingxin County, this article simulates the county's land use/cover changes based on the CLUE-S (the Conversion and Land Use and its Effects) model. The relation between land use changes and its driving factors are studied by analyzing static and dynamic factors in...
Assessing and understanding the level of city ecological security are of great importance to sustainable urban development. According to the pressure-state-response model, the indexes of city ecology security assessment were chosen. Subsequently, the assessment model based on projection pursuit technology was set up and used for a case of Hefei city. The result shows that the ecological security level...
Problems of land ecological security caused by the unreasonable utilization of land resource have influenced the sustainable development of society and economy. This paper selected areas along the Changjiang River in Anhui Province as study area. It constructed an evaluation index system of land ecological security based on Pressure-State-Response model. Considering the illegibility and uncertainty...
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