摘要
城市土地生态安全是城市持续、健康发展的基础。针对河南省城市土地利用现状的特点,从经济可行性、社会接受性、生态合理性三方面建立了城市土地生态安全评价指标体系,利用构建的三角模型对河南省17个地市在2001年、2004年、2007年和2010年4个时间断面的城市土地生态安全水平进行了评价,并分析了其区域差异。结果表明:(1)河南省17个地市的城市土地生态安全性总体呈增大态势,但普遍不高,多处于弱安全区域;(2)各地市的社会接受性指数逆向发展,经济可行性指数稳步提升,生态合理性指数不断增大;(3)2001-2010年河南省城市土地生态安全呈两种趋势:一是一般安全趋势,并且持续提升,二是一般安全→很安全→一般安全波动趋势;(4)社会可接受性指数不均衡分布趋向明显,生态合理性指数和非经济可行性指数在各城市趋向均衡分布。
Eco-security of urban land is the foundation of urban steady and healthy development. Focusing on the status quo of land use characteristics of Henan Province,the paper designed an evaluation index system of eco-security of urban land,with consideration of three primary indices including economic feasibility,social acceptability and ecological rationality. The triangle model was used to evaluate the eco-security level of urban land and regional difference of 17 cities and prefectures in Henan Province in the years of 2001,2004,2007 and 2010. Results show that:( 1) as a whole,the eco-security level of urban land in the 17 cities and prefectures shows an improving trend,but the security level of most cities still fall in weak region.( 2) The index of social acceptability develops reversely,while the indices of economic feasibility and ecological rationality improve steadily.( 3) The eco-security of urban land of Henan province shows two trends from the year 2001 to 2010. One is general safety trend that keeps continual promoting,and the other is waving trend that changes from general safe to safer and then to general safe.( 4) The social acceptability index shows disequilibrium distribution trend,but ecological rationality index and uneconomic feasibility index show equilibrium distribution trend between urbans.
出处
《自然灾害学报》
CSCD
北大核心
2014年第2期21-30,共10页
Journal of Natural Disasters
基金
"十一五"国家科技支撑计划项目(2006BAJ05A14)
国家自然科学基金资助项目(41371524)
中国博士后科学基金(2013M540571)
河南省基础与前沿研究(112300410283)
河南省教育厅科学技术研究重点项目(12B790014
13A630346)
中国煤炭工业协会科学技术研究指导性计划项目(MTKJ2011-386)
河南理工大学博士基金(B2010-87)
关键词
城市土地
生态安全
三角模型
变异系数
河南省
urban land
eco-security
triangle model
coefficient of variation
Henan Province
