摘要
在监测分析基础上 ,运用多级模糊综合评判模型及改进的标准赋权与层次分析相结合的权重确定方法 ,对黄土高原沟壑区果农型农业生态系统的单要素环境质量 (包括土壤、径流水体、农副产品、社会经济环境及生态环境 )和总体环境质量进行了评价 ,结果表明 ,土壤、径流水体、农副产品质量状况均为Ⅰ级 ;社会经济环境质量为Ⅱ级 ;生态环境质量为Ⅲ级 ;总体环境质量为Ⅰ级 .单从生态效益角度来看 ,果农型农业生态系统并不是最佳选择 。
Based on the detection and analysis of the contamination status of agro-ecosystem with apple-crops intercropping as the dominant cropping model in Loess Plateau,the individual factor and comprehensive environmental quality were assessed by multilevel fuzzy synthetic evaluation model,analytical hierarchy process(AHP),and improved standard weight deciding method.The results showed that the quality of soil,water and agricultural products was grade Ⅰ,the social economical environmental quality was grade Ⅱ,the ecological environmental quality was grade Ⅲ,and the comprehensive environmental quality was grade Ⅰ.The regional agro-ecosystem dominated by apple-crops intercropping was not the best model for the ecological benefits,but had the better social economical benefits.
出处
《应用生态学报》
CAS
CSCD
2004年第3期425-428,共4页
Chinese Journal of Applied Ecology
基金
国家重点基础研究发展规划项目 (G2 0 0 0 0 1860 5 )
中国博士后科学基金资助项目
