疏勒河流域的生态环境与沙漠化

疏勒河流域地处极度干旱的河西走廓西部，是正在兴建的农业灌溉区，随着流域新一轮水土资源的大规模开发利用，必然引起与地表水-地下水循环转化系统密切相关的生态环境条件的恶化，已出现了类似石羊河，黑河流域水土资源开发利用过程出现的植被衰亡，草场退化，泉水衰减，土地盐渍化，沙漠化等生态环境问题，本文依据20世纪90年代对疏勒河流域的实地调查资料，在对流域生态环境特点，环境变迁历史进行分析对比的基础上，着重研究生态环境与地下水的关系，并提出了流域地下水影响带内植被演化模式。

Ecological Environment and Desertification in Shulehe River Basin

Environment and development are focused in the world of today and water is a link to maintain the balance between economic development and ecological environment. Shulehe river basin is located in the west of arid Hexi corridor, where is being developed a new agr iculture irrigation area.In pace with a large scale development of wa ter and land by human,the ecological environment will be changed becaus e the variation of cycle system of surface water—groundwater is relat ed to the environmental problems, such as vegetation dying grassland deg eneration, spring water decrease, salting of soil and desertization have been occured in similar areas, for example, Shiyanghe river basin and H eihe river basin. According to the invertigated data in 90’s of twenty century, the relationship between ecological environment and groundwater is studied based on the analysis about the feature of ecological envi ronment, current situation of desertification and historical evolution of environment and the evolution pattern of vegetation affected by ground water is proposed. The pattern and some other conclusions maybe have re ference value to draw up the development of water resources and to pr opose the countermeasure for environmental protection in Shulehe river basin or extended to Northwest China.