额济纳三角洲地下水水盐特征与植被生长的相关研究

Groundwater Salinity Characters and its Relationship with Vegetation Growth in Ejin Delta

根据野外实地考察、地下水采样和分析数据,从空间尺度上,讨论了额济纳三角洲地下水水盐的变化特征及其与植被生长的关系。研究结果表明,额济纳三角洲矿化度总体由西南向东北升高,东河SO2-4浓度下降,其他离子增加,西河离子浓度都呈上升趋势,河道剖面表现先上升后下降的水盐特征;终端湖盆为本区高矿化度地区;地下水水盐条件制约植被分布、生存和演替,各种植被类型适应不同的地下水位和盐分特征。

Based on field investigation and data analysis of the groundwater, this study try to discuss the characters of groundwater salinity and its relationship with vegetation growth in Ejin delta. The result indicated that the groundwater mineralization increases from southwest to northeast in Ejin delta. There are different salinity characters among along the east river, the west river and the river section. Terminal lake has the highest mineralization in Ejin. The characters of groundwater salinity influence the distribution, growth and succession of vegetation.