农业机械学报2012，Vol.43Issue(7)：28-35,8.DOI:10.6041/j.issn.1000-1298.2012.07.006
黄土丘陵区中尺度流域水土流失治理环境效应评估
Ecological and Environmental Assessment on the Effects of Water and Soil Loss Comprehensive Harness in Meso-scale Watershed in Loess Hilly Region
摘要
Abstract
An index system was constructed for accessing eco-environmental effect of water and soil loss comprehensive harness in meso-scale based on the DPSIR model. The eco-environmental effect of grain for green project was accessed. The results showed that comprehensive value of environmental effect of ecological restoration increased by 30% in test stage, 43% in formal implement stage, 56% in restoration stage, respectively compared with those in the initial stage of evaluation; whereas the values of environmental subentry decreased by 6% , 20% and 22% , respectively; values of social subentry increased by 43% , 114% and 143% , respectively; the values of economic subentry increased by 29% , 129% and 129% , respectively. Grain for green, farmland pressure, sediment transport modulus and erosive precipitation were sensitive indices which indicated that there was a hysteretic nature of eco-environmental changes compared with driving and pressure factors. Impacts of the project of grain for green for eco-environment to response usually need a period of time.关键词
退耕还林(草)/黄土丘陵区/生态恢复/中尺度流域/DPSIR模型Key words
Grain for green/ Loess hilly region/ Ecological restoration/ Meso-scale watershed/ DPSIR model分类
资源环境引用本文复制引用
王兵,刘国彬,张光辉,杨勤科,杨艳芬..黄土丘陵区中尺度流域水土流失治理环境效应评估[J].农业机械学报,2012,43(7):28-35,8.基金项目
中国科学院战略性先导科技专项(XDA05060300)和中国科学院百人计划支持项目 （XDA05060300）
