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Security Assessment and Scenario Prediction of Human Settlements in Desertification Area

Author: MaLiZuo
Tutor: WuBin；ZhangYuQing
School: Beijing Forestry University
Course: Complex agroforestry
Keywords: Habitat Environmental Safety Ecological footprint Safety Evaluation Scenarios Yanchi County
CLC: X826
Type: Master's thesis
Year: 2010
Downloads: 80
Quote: 1
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Abstract


Desertification is a serious threat to our ecological security and sustainable economic and social development , continue to squeeze the living space of the Chinese nation . Sand area Habitat quantitative evaluation and classification of environmental safety is an important theoretical basis for the prevention and control of desertification , is of great significance for guiding anti-desertification work . The sandy area resources , environment and socio-economic as a coupled system , drawing on the living environment theory , theory of ecosystem security , ecological footprint theory as the research object , a typical farming-pastoral zone Yanchi supply from ecological consumption and ecological point of view , to establish a set of indicators intuitive data acquisition convenient sand area Habitat environmental safety evaluation system , , home environment quantitative evaluation of the safety of people on the sandy area . The results show that the ecological footprint per capita in Yanchi County is more than doubled the per capita ecological carrying capacity , ecosystem is strong unsustainable state , causing the main reason for this is due to the increase of the demand for land of the the uneven grass supply and demand structure , and fossil fuels . Nearly 10a , due to the rapid development of the economy , the accelerated process of urbanization , ecological footprint rose rapidly , but the ecological carrying capacity decreased volatility due to harsh natural conditions and the mode of economic growth mainly to the stock of the resource development , ecological the deficit increased every year , we must rely on the input of external resources to maintain the development of the local living environment security is unsustainable . Due to local ecological demand , there is still much room for improvement , referring to the supply of resources , through effective measures to adjust of Yanchi demand and ecological supply can be restored to a state of equilibrium , to achieve coordinated development of socio-economic and ecological environment . Simulation under different social and economic conditions for the development of the living environment safety evaluation on the basis of changes in momentum for Habitat environmentally safe , and results show that the premise of rapid economic development , relying on high-tech to improve biological productivity , reasonable adjustments to the land use structure , improve the way of life of the residents , to reduce dependence on the limited resources of ecological sand area Habitat environmental Sustainability .

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CLC: > Environmental science, safety science > Environmental Quality Assessment and Environmental Monitoring > Analysis and Evaluation of Environmental Quality > Biological assessment, ecological assessment
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