四川开县农业生态环境质量评价与对策(一)  

A STUDY ON AGRO-ECOLOGICAL ENVIRONMENTAL QUALITY OF KAI COUNTY,SICHUAN PROVINCE

作　　者：杨居荣[1] 王素芬[1] 宁大同[1] 薛纪俞 马小莹 陈飞星[1] 

机构地区：[1]北京师范大学环境科学研究所

出　　处：《农村生态环境》1989年第4期27-31,共5页Rural Eco-Environment

摘　　要：本文基于农业生态条件和农田生态系统功能的综合表现,评价了研究区农业生态质量,分析研究了农业生态环境存在的问题,提出了保护对策。计价中,生态条件要素选取了土壤环境(包括土壤综合肥力、土壤污染状况的有关参数),大气环境(包括大气资源和大气质量的有关参数),水环境(包括水资源量和水质的有关参数)。生态系统功能指标选取了农田生产力。经过实地调查,取得了有关参数资料。在单项因素分级指数评价的基础上,采取评分等权迭加法进行综合评价,对开县地区农业生态质量作了定量表征,并对县内不同农业区的生态质量进行排序。According to the ecological conditions and the function of agro-ecosystem of Kai county, this article evaluated the agro-ecological environmental quality,analyzed the existing problems in agricultural ecology and put forward some measures for protecting the ecological environment.we selected soil, air and water as main factors of ecological environment which include, soil fertility, soil quality, climate resources, air quality, water resources and water quality.The productivity of farmland was selected to reflect the function of agro-ecosystem.Based on the evaluation of singal factor, we used the method of 'weighting factors' for comprehensive evaluation . We quantitatively described the agro-ecological environmental quality of different agricultural areas in Kai county, and took them in order.The research results showed that the agro-ecological environmental quality in Kai county is degrading because of human activities. The differences between agricultural areas in Kai county are obvious.The agro-ecological environmental quality of I area is the best, and IV area, the worst. The disadvantages for fully development of agricultural potential included overcut, soil erosion and water loss and unreasonable agricultural structure as well as natural incoordination of water and heat.

关 键 词：农业生态 环境质量 评价 四川 

分 类 号：S181[农业科学—农业基础科学]