摘要
本文根据华南热带亚热带平原地区农田生态环境特征,探讨了加权污染指数法在农药污染农田环境质量评价中的应用,提出了利用植物对农药的吸收系数和土壤中农药的流失系数确定评价因子权重系数的方法,并根据华南平原生态环境特点确定土壤中的农药标准。作者认为,农药污染具有较强的区域性和地带性,不宜制定单一标准,南方地区农田土壤农药标准应严于北方。
Based on the features of ecological environment of farmland in tropical and subtropical plain areas of South China, from the angles of hygienic toxicology and ecology, a Weighted - Pollution - Index method on assessment of environmental quality of farmland polluted by pesticide is studied in this paper. The way of caculating weight index of evaluation fators from absorption index of plant and erosion index of pesticide in soil is advanced. The author considers that the environment assessment standard of pesticide pollutants (BHC and DDT) in soil should be determined by ecological environment features of plain areas in South China, and it is of regionality and zonality. Therefore, single standard is not good for different regions. The standard in tropical and subtropical zones should be more stringent than in North China.
出处
《热带地理》
北大核心
1992年第4期358-364,共7页
Tropical Geography
关键词
农田
生态环境
农药
污染
环境质量
Ecological environment of farmland
Pesticide pollution
environmental quality assessment
