摘要
受人类活动和流域生态水文过程(Eco-hydrological processes)的影响,东辽河流域地表水污染严重,水质具有明显的地域分异特征.通过1983~1999年对东辽河流域地表水质分析及历年来水文和社会经济资料整理,建立流域地表水污染重心模型,探讨了东辽河流域地表水水质空间演化特征.研究结果表明,受到自然条件和社会经济活动演化的影响,东辽河流域地表水污染重心位置有逐渐向上游方向迁移的趋势;受自然条件的季节变化和农业季节性开发活动的影响,东辽河流域污染重心的季节变化较之年际变化更为剧烈,从全年变化趋势看,污染重心有向流域上游迁移的趋势.从流域管理的角度看,东辽河流域在治理点源和非点源污染的同时,还要从全流域的角度出发,加强流域生态水文过程的调节.
With influence of human activity and eco-hydrological processes, the surface water pollution in the East Liaohe Basin is serious and has the characteristic of spatial diversity. Based on the surface water quality analysis from 1983 to 1999 and the collection of hydrology and scio-economic data in past years, the model of surface water pollution barycenter (MSWPB) is established and the evolution character of spatial pattern of surface water quality is explored. The results show that with the influence of natural condition and scio-economic activity, the surface water pollution barycenter (SWPB) has the trend of moving to the up reach of the basin. The seasonal change of SWPB is more acute than that of the yearly change under the influence of seasonal change of nature condition and seasonal exploitation of agriculture. The SWPB tends moving to the up reach yearly. So the basin management must be based not only on controlling the nonpoint and point-pollution, but also on strengthing the regulation of eco-hydrological process in the whole basin.
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
2001年第6期564-568,共5页
China Environmental Science
基金
中国科学院资源与生态环境重点研究项目(KZ952-J1-067)
