河北坝上地区生态环境评价

该文以河北坝上生态调查为基础，选取气候、水文、地貌、植被等因子，利用层次分析法对当地的生态环境进行评价。结果表明，坝上地区生态环境已受到严重破坏，虽然经过多年治理，生态环境有所改善，但大部分地区仍有继续恶化的趋势；干旱少雨是坝上地区生态环境恶化的主导因素。

Ecological Environment Evaluation on Bashang District in Hebei Province

Bashang District in Hebei Province is suffering from degradation of ecological environment,which has severely influenced the local social stability and economic development.The reasonable evaluation of the ecological environment quality in this area is significant for the regional ecological environment protection.In this paper,the ecological environment quality of Bashang District in Hebei Province was evaluated using analytic hierarchy process based on the ecological investigation of the research area.In the analytic model,three element levels were built and 13 factors were chosen.The factors were considered mainly on climate,hydrology,landform,vegetation and land use.The weight of different factor was gotten by the model calculation and the grade standard of the ecological environment quality was established referring to the relative researches in Bashang District.The results show that the climatic factors are the main influencing factors and the ecological environment of this area has been destroyed lightly and the deterioration trend appears.Finally,the paper gives some suggestions on the ecological environment construction in Bashang District and direction of future study.