宁夏引黄灌区渠道砌护对生态环境的影响分析

Impact analysis of canal lining to the ecological environment in irrigation districts of Ningxia

随着灌区节水工程的实施,渠道的渗漏水量减少,对地下水的补给水量也减少,针对是否会产生自然植被衰竭、湿地萎缩、生态退化等一系列生态环境问题,本文通过大量的试验观测数据,从生态系统的基本功能、生态与地下水位、渠道渗漏水量、地下水动态变化等角度,分析探讨了渠道砌护节水对自然植被、湖泊湿地、土壤盐渍化等方面的影响,为灌区渠道砌护节水工程的进一步实施提供决策依据。

With the implementation of the water-saving irrigation project, to reduce water leakage channels, groundwater recharge water also decreased, whether it will have attenuation of natural vegetation, wetlands shrinkage, ecological degradation and a series of ecological problems. Through a large number of test data, from the basic functions of ecosystems, ecology and the water table, leaking water volume, and groundwater dynamic perspective, analyzed the canal lining impacts to the natural vegetation, lakes and wetlands, soil salinization and other aspects that can provide the basis for decision-making in further implementation of the cannl lining of water-saving projects.