摘要
长江三峡库区的生态环境及水质情况,随着三峡工程建设的不断深入而备受社会各界的瞩目。重庆市万州区地处三峡水库腹心地带,长江自西南向东北横穿万州区全境,过境流程83公里。万州区溪流纵横,水网密布,多数河流直接排入长江。而且在三峡库区大移民进程中有大量的移民集中在万州,在三峡大坝即将合龙之际,研究长江万州流域的水质情况无疑对指导库区的清理工作、生态环境建设等具有重大意义。本文对该地区的水污染源进行了初步考察,同时对万州区段长江流域的水质进行了探索性研究。发现该区水土流失情况较为严重,而且水中的泥沙含量与其COD水平有相关关系,江水中大部分的COD是由泥沙携带的有机物的贡献。
The Wanzhou district of Chongqing city is in the central area of Three Gorges Reservoir Area. Many streams and rivers flow into the Yangtze River directly. And most of the migrants created by Three Gorges Project moved to this region. So the water quality of Yangtze River of Wanzhou district is important to the whole river. This paper's research reflects that the soil erosion here is serious. And perhaps just because of this, the Chemical Oxygen Demand level is closely relevant to the silt content level of the river water. Experiments indicate that most COD level is devoted by silt in the water.
出处
《四川环境》
2004年第1期67-69,共3页
Sichuan Environment
关键词
长江
三峡
水质
含沙量
Yangtze River
Three Gorges
water quality
silt content
