摘要
将灰色系统理论与熵值赋权法相结合,采用压力—状态—响应模型,对恩施贫困地区生态安全状况进行综合评价,并将生态安全综合指数分别与各县农民人均纯收入及贫困村比重进行空间耦合。计算结果表明恩施贫困地区生态安全呈现以下特点:1研究区当前生态安全综合指数总体处于较安全水平,生态环境较好;2研究区各县市生态安全综合指数与农民人均纯收入没有必然的联系,说明在贫困地区开展扶贫工作,若只注重经济发展并不一定能改善当地生态安全状况;3各县市生态安全综合指数与贫困村比重存在反相关性,表明扶贫开发在消除贫困的同时,能够改善当地生态环境,提升整体生态安全水平。
Nowadays the poverty has been a serious problem that has a negative effect on social economic development in China. Eliminating poverty is one of challenges to sustainable development strategy of China. The ecological system in poor areas is very fragile. If poverty alleviation and development are not properly promoted, the ecological system will be driven to a worse situation. Therefore it is necessary to make an ecological security evaluation of the poor areas, the significant effect and meaning of ecological protection should be made prominent, so that the sustainable development can finally be achieved.Based on the domestic and foreign existing studies, this thesis combines the grey system theory with entropy method, uses the pressure-state-response model, conducts a comprehensive assessment of ecological security in poor areas of Enshi, and makes spatial coupling of ecological security comprehensive index with the per-capita net income of farmers and the proportion of poor villages. The calculation results show that the ecological security of Enshi poverty areas have the following characteristics:(1) The comprehensive index of ecological security of current study areas is at a security level with good ecological environment, but the ecological system is at fragile edge;(2) There is no necessary relationship between the ecological security comprehensive index of cities and counties and the per-capita net income of farmers, and showing that only paying attention to economic development does not necessarily improve the local ecological security status in the poverty alleviation work in poor mountainous areas;(3) Compared with the specific gravity of poor villages, there is negative correlation the comprehensive index of ecological security in each county and city. That is to say, the lower the specific gravity of poor villages, the higher the comprehensive index of ecological security. The poor areas in Enshi shake off poverty, the ecological environment should be kept in a relatively good situation, even can further improve the situation of local ecological security, so that not only the economy will be developed, but also the ecological environment could be protected. In a word,the poverty alleviation project can help the local people to get rid of poverty; furthermore, it promotes the ecological environment improvement in poverty-stricken areas, thus making the areas more suitable for human life and development.
出处
《地理研究》
CSSCI
CSCD
北大核心
2014年第8期1457-1466,共10页
Geographical Research
基金
国家科技支撑计划项目(2012BAH33B00)
关键词
生态安全综合指数
灰色关联
熵权
PSR模型
贫困地区
eco-security comprehensive index
gray correlation
entropy weigh
Press-State-Response model
poor areas
