从管理角度浅析地下水监测资料时空代表性——以疏勒河昌马灌区为例

以甘肃省疏勒河昌马灌区2002—2010年地下水监测资料,分析地下水水位动态监测资料年际和年内变化趋势,对比不同时间尺度和空间分布下地下水水位资料计算结果。通过数据分析可知,在空间分布上,可以选择区域内某一单井地下水水位动态监测数据代表整个区域地下水水位动态变化情况,这一研究结论,将减少监测井布设密度的争议,可以大大降低监测井布设成本;在时间尺度上,对监测井可以选择年内某一固定时刻的水位数据作为全年监测数据的代表值,这一研究结论,可以减少监测井监测频次,降低监测成本,减少人员投入。通过对疏勒河昌马灌区监测资料的分析,可以以点带面对地下水水位监测管理提出建设性的意见。

Evaluation of representative of time and space of groundwater monitoring data from management prospect-- using Changma Irrigation District in Shnie River as an example

Calculation results of groundwater levels at different time and space were compared based on dynamic monitoring of 2002-2010 groundwater trend of change with a year and inter year in Changma Irrigation District in Shule River Basin of Gansu Province. From the analysis result, it was found that the dynamic monitoring data of a particular point in the selected zone might represent the trend of change of the entire region. This conclusion is of great help to reduce the distribution density of monitoring wells and costs. A water level of a monitoring well at the fixed time within year may also be selected as the representative value of whole year monitoring data. Thus, this study can not only reduce the frequency of monitoring but also cost and manpower input. A constructive idea of ＂fanning out from a point to an area＂ is raised for groundwater level monitoring and management, with the experience of monitoring data analysis to Changma Irrigation District.