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根据吐鲁番盆地绿洲内布设的34眼长期观测井2007—2013年的地下水埋深监测数据,在ArcGIS10.1的支持下,运用地统计学方法研究了地下水埋深的时空变异特征,利用普通克里格插值法分别绘制了2007年和2013年地下水埋深的空间分布图,并进行了比较分析。结果表明:半变异函数的指数理论模型所预测的指标完全反映了吐鲁番盆地地下水的空间结构和变异特征;2007年具有中等强度的空间相关性,而2013年具有较强的空间相关性;吐鲁番盆地地下水埋深在空间上东西方向具有明显的变化趋势;从整体上看,吐鲁番盆地地下水位具有继续下降趋势,主要受自然环境因素和人为因素的影响。
Based on the monitoring data of groundwater depth from 34 long-term observation wells distributed in oases in the Turpan Basin from 2007 to 2013 and using the support of ArcGIS10.1, the geostatistics method was used to study the temporal and spatial variation of groundwater depth. The spatial interpolation maps of groundwater depth in 2007 and 2013 were plotted and compared respectively by grid interpolation method. The results show that the index predicted by the exponential theoretical model of semivariogram completely reflects the spatial structure and variation characteristics of groundwater in Turpan Basin. In 2007, it has a moderate intensity of spatial correlation, while in 2013 it has strong spatial correlation. Turpan Basin The depth of groundwater has obvious spatial and spatial variation tendency. On the whole, the groundwater table in Turpan Basin has a tendency to continue to decline, which is mainly affected by natural environment and human factors.