黄骅市耕地生态安全评价及生态阻力分析  

Evaluation on Cultivated Land Ecological Security and Ecological Resistance Analysis in Huanghua City

作　　者：苏刚[1] 冯菲[2] 张俊梅[2] 

机构地区：[1]河北农业大学资源与环境科学学院,河北保定071000 [2]河北农业大学国土资源学院,河北保定071000

出　　处：《贵州农业科学》2015年第11期179-184,共6页Guizhou Agricultural Sciences

基　　金：国土资源部公益性行业科研专项经费项目(201311060);河北省科技支撑计划项目(132276329)

摘　　要：为对河北省黄骅市耕地生态安全状况进行评价,通过PSR模型建立耕地生态安全评价指标体系,对2003-2012年的耕地生态安全阻力因素进行分析。结果表明:2003-2012年10年间,黄骅市耕地生态安全状态指数、响应指数总体成上升趋势,压力指数呈下降态势;耕地生态安全综合指数呈上升趋势,由2003年的0.353 3上升到2012年的0.714 8,等级由不安全提升到较安全。人口密度、城市人口比例、单位耕地化肥负荷和人均耕地面积等指标阻力度上升幅度较大,成为近年制约黄骅市耕地生态系统安全状况改善的主要因素。The authors constructed an evaluation index system based on the PSR model to evaluate the ecological security of cultivated land and analyze ecological security resistance factors using diagnostic model in Huanghua city of Hebei province during 2003-2012.Results：The state and response index of10-year period overall to the rise,while the pressure index showed a downward trend;the ecological security index of cultivated land resources showed a upward trend,rising from 0.353 3to 0.714 8,rating from ＂unsafe＂to the ＂safer.＂ The results of resistance analysis showed that the indexes of the population density,the proportion of urban population,farmland fertilizer unit load,per capita arable land and other indicators of the degree of resistance have a greater increase,which become the main factors that restrict the improvement of ecosystem security of farmland in Huanghua city in recent years.

关 键 词：耕地生态安全 黄骅市 PSR模型 生态阻力 

分 类 号：S-9[农业科学]