摘要
研究长期利用城市污水浇灌的农田土壤——植物系统中污染物的含量及其行为与归宿，不仅对农田生态系统的环境质量控制有重要意义［１］，同时，还可以为合理发展污灌，实现污水资源化，促进农业生产的持续发展提供科学依据［２］。本文调查了华北白洋淀地区典型污灌农田土壤中污染物含量及其在土壤——植物系统中分布和累积状况。结果表明，污灌区土壤中某些重金属含量有一定的累积趋势。目前，这些重金属对农田作物无明显危害，大部分累积在根部。加强科学管理和污灌指导，利用农田作为土地处理系统来消纳污水中耗氧有机物，是本地区近期可行的污水资源化途径之一。
In this paper, the content and distribution of pollutants in soil plant system typically polluted by irrigating farmland soil are discussed. The results show that some heavy metals accumulate in the soil. So far, it hasn't brought about obvious endanger to plants in farmland and majority of heavy metals accumulate in the roots. It is one of feasible sewage revitalizing ways to enhance sewage irrigating management, by using farmland as the treatment system to eliminate pollution in foul water.
出处
《地理译报》
CSCD
1997年第2期62-69,共8页
关键词
土壤
植物系统
污染物
含量
变化规律
Soil plant system, Pollutant, Variations of content, Baiyangdian region
