摘要
重庆喀斯特山地属于典型生态脆弱区,宜耕地资源不足,土地退化严重,社会经济发展与生态环境承载力、粗放的农业经营方式与资源短缺的矛盾突出。该文尝试将喀斯特山区农业发展及其影响下的生态响应作为一个系统,建立农业与生态发展协调性评价体系,利用因子分析法对重庆37个区县喀斯特山区进行横向对比和识别,并按综合得分进行分级。研究发现重庆喀斯特地区农业-生态发展协调度以较差和差为主,分别占总喀斯特面积的71.12%和12.17%,主要分布在渝东北和渝东南典型喀斯特区县,这种空间分异是自然基底背景、人为胁迫、经济科技因素共同作用的结果。
The karst mountain areas of Chongqing are typical vulnerable eco-environments as the same as the other karst areas in Southwest China, where the serious land degradation and rocky desertification are especially remarkable environmental problems. In most of those areas,the level of social and economic developments has a poor coordination with bearing ability of ecological environments. This paper tries to establish an assessment system of agriculture-ecology coordinate degree in karst mountain areas with the quantitative method of factor analysis. The analysis result show that the areas of extreme and severe lack of coordination prevails with proportions of 71.12% and 12.17%separately. And most of them are located in the Northeast and Southeast Chongqing. That is the synthetic consequence of natural, humane, economic and technological affecting factors.
出处
《湖北农业科学》
北大核心
2009年第2期324-328,共5页
Hubei Agricultural Sciences
基金
国家"十一五"科技支撑计划项目(2006BAC01A16)
关键词
农业发展-生态响应
评价体系
因子分析
重庆喀斯特山地
agricultural development-ecological reaction
assessment system
factor analysis
karst mountain areas of Chongqing
