塔里木沙漠公路沿线地下水空间变异性及分布规律研究

Spatial variability and distribution of groundwater along the Tarim desert highway

塔里木沙漠公路防护林生态工程是新疆防沙、治沙重大工程之一,就其建设长度和规模来讲,可谓世界之最。文中通过地下水位测量、地下水样水化学分析等数据,对防护林沿线的地下水空间变异性特征及地下水要素的空间分布规律进行了探讨,目的是为防护林带的正常生长提供理论依据和技术支撑。分析表明:在小于当前研究尺度下,影响地下水特征变异的过程作用较强。地下水埋深在整个尺度上具有恒定的变异,沿线区域北部的地下水埋深小于南部;地下水矿化度表现为中等的空间相关性,高矿化度水集中在沙漠北部;地下水pH值的空间相关性很弱,高值交替出现,最大值出现在沙漠中部位置。

In this paper, we measured groundwater depth and analyzed chemical constituents of groundwater along the desert highway. Spatial variability of groundwater table and quality were studied by using geostatistic method. The results showed that in less than current research scale, the effects to the groundwater characteristics variation was strong. Groundwater depth had steady variation in whole scale, groundwater depth in north was less than that in south; groundwater mineralization had middle spatial correlation, concentrated water focused on north of desert ; spatial correlation of groundwater pH value was very feeble, high value appeared alternatively, the maximum value of pH was found in middle of desert.