克里雅河流域不同径流变化下的地下水埋深时空分异规律

The Groundwater Depth Spatial-Temporal Differentiation Laws of Different Runoff Changes in Keriya River Basin

地下水是干旱、半干旱地区用水的重要来源,有时甚至是唯一的水源.利用覆盖整个克里雅河流域平原绿洲的24个地下水观测井点2012年5 ～ 10月地下水动态监测资料,运用数理统计方法和克里格（Kriging）空间插值法,分别研究了克里雅河流域绿洲不同径流变化下的地下水埋深的时间序列变化趋势和空间变异特征.结果表明,地下水埋深的变化受土地类型的影响,同时地下水埋深也影响农业的发展,而且地下水埋深与海拔高度呈正相关关系.在同一时间尺度、不同海拔高度上,相同土地类型的地下水埋深的变化幅度各不相同,区域所处的海拔与地下水埋深的变化幅度呈负相关关系;而在同一时间尺度、同一海拔高度上,东西部地下水埋深变化幅度也各不相同,东部地区的地下水埋深变化幅度大于西部的地下水埋深变化幅度.Kriging空间插值结果表明,不同径流阶段于田绿洲地下水埋深整体呈上升趋势,但并不是绝对的整体都呈上升趋势,而且在同一时间不同地区和同一地区不同时间地下水埋深的变化都各不相同.

Groundwater is an important source of water in the arid and semi-arid areas,even sometimes is the only source of water.Using groundwater monitoring datum of 24 groundwater observation wells which is covering the entire Keriya river basin from May to October in 2012,along with mathematical statistical method and Kriging＇s space interpolation method （Kriging）,the time series variation trend and spatial variation characteristics of groundwater depth under different runoff changes of Keriya river basin were studied respectively.The results showed that the change of groundwater depth is influenced by land types,at the same time,the development of agriculture also affected by depth of groundwater,and it has a positive correlation with the altitude.Kriging＇ s spatial interpolation results indicated that at different stages of runoff,the oases groundwater depth of Yutian totally has an upward trend,but not the absolute overall uptrend,and the depth of groundwater at the same time in different parts as well as the same area at different time changes differently.