艾丁湖流域植被与地下水埋深关系分析

Analysis of Relationship Between Vegetation and Groundwater Depth in Aiding Lake Basin

采用实地植被调查、无人机航拍、机民井调查和探井施工揭露潜水位的方法获取艾丁湖流域植被盖度、植被种类及地下水位数据,并定量分析植被盖度与地下水位的关系。同时分析植被种类空间演替的规律。研究提出:疏叶骆驼刺的最适宜水位埋深为4.5~5.8m,生长下限为0.7 m,植被空间演替随着地下水位埋深的增加呈现由喜水植被过渡为耐旱植被的规律,出现芦苇/红柳-盐穗木-刺山柑/野西瓜-骆驼刺/白刺等优势植被逐渐交替的顺序,为研究西北地区干旱内陆盆地地下水生态功能提供了技术支持。

The method of field vegetation survey,aerial survey of drones,survey of civil and mine wells and exploratory well construction to expose phreatic waters to obtain vegetation cover,vegetation types and groundwater level data of Aiding Lake Basin,and quantitative analysis of vegetation cover and groundwater level relationship.At the same time,the law of spatial succession of vegetation types is analyzed.The study proposes that the optimum water level depth of the camel thorn is 4.5~5.8 m,and the growth limit is 0.7 m.The spatial succession of vegetation shows the transition from hi-water vegetation to drought-tolerant vegetation with the increase of groundwater depth.Reed/Hongliu-salt-wood,capers,wild watermelon,camel thorn/white thorn,and other dominant vegetation gradually alternated,providing technical support for studying the groundwater ecological function of the arid inland basin in Northwest China.