摘要
黄河流域的水环境灾害频繁 ,其内因是流域先天性环境脆弱、水少沙多 ;外因是人类对自然环境和资源的不合理开发利用 ,使得本来就相当脆弱的生态环境遭受了更严重的破坏 ,从而增加了水环境灾害的发生频率和受灾程度。在人类可为的范畴内 ,可以通过增水减沙使流域水环境灾害逐步减轻 ,但由于流域区位的先天缺陷 ,要完全消除灾害 (特别是水土流失和洪灾 )却十分不易。
The water environment hazards of the Yellow River basin are frequent. The internal cause is that the environment is congenital fragile, less water and more sediment. The external cause is irrational development and utilization of natural environment and resources, making the ecological environment that has already been fairly fragile even worse and increasing the happening frequency of water environment hazards and degree of damage. In the human accomplishable range that water environment hazards of the basin can be mitigated gradually through increasing runoff and reducing sediment. While it is very difficult to totally eliminate hazards, especially soil and water loss and floods, due to congenital defect of the basin location.
出处
《人民黄河》
CAS
北大核心
2002年第7期3-5,共3页
Yellow River
关键词
黄河流域
水环境
灾害
成因
修复
water environment
hazards
cause of formation
restoration and way
yellow river basin
