甘肃省农业生态系统健康评价

Evaluation of agro-ecosystem health in Gansu Province

通过对农业生态系统的分析,建立了农业生态系统健康状况的评价指标、评价标准及综合评估模型,并运用层次分析法对甘肃省农业生态系统健康状况进行了综合评价。结果表明,除陇南、临夏及甘南农业生态系统处于较健康状况外,其它各地市均处于一般状况。各地区涉及到系统结构的自然环境因子均处于较低水平,其中尤以河西干旱区各地市结构各指数均处于较低值,其结构综合评价值均<2,而其它各生态区虽然结构指数存在差异,但差异不大,除中部的白银市以外,其它地区结构指数综合评价值均达到2以上,其中尤以陇南、甘南较高;从经济状况看,河西干旱区各地市均较处于其它生态区的地市高,而其它地区则相对较低。

Through the analysis of agro-ecosystem in Gansu Province,the evaluation indices,criteria,and comprehensive model for agro-ecosystem health were built,and AHP method was used to analyze the status of agro-ecosystem health in this Province.The results showed that the agro-ecosystem health status was relatively better in partial regions of Gansu Province,e.g.,Longnan,Linxia and Gannan,but at a lower level in other regions.The values of natural environmental factors related to the system structure of this Provi...