基于面积-高程积分的地下水动态分析——以泾惠渠灌区为例  

Groundwater dynamic analysis based on hypsometric integral: a case study of Jinghuiqu irrigation district, China

作　　者：徐斌[1,2,3] 王金凤 张艳[4] 金岚 李换换[4] 熊玉晴 XU Bin;WANG Jinfeng;ZHANG Yan;JIN Lan;LI Huanhuan;XIONG Yuqing(School of Environmental Science and Engineering, Chang’an University, Xi’an 710054, China;Research Institute for Water and Developments, Chang’an University, Xi’an 710054, China;Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, Chang’an University,Xi’an 710054, China;School of Earth Science and Resources, Chang’an University, Xi’an 710054, China)

机构地区：[1]长安大学环境科学与工程学院,西安710054 [2]长安大学水与发展研究院,西安710054 [3]长安大学旱区地下水文与生态效应教育部重点实验室,西安710054 [4]长安大学地球科学与资源学院,西安710054

出　　处：《地球环境学报》2019年第1期27-37,共11页Journal of Earth Environment

基　　金：高等学校学科创新引智计划(B08039);国家自然科学基金项目(4171101190);中央高校基本科研业务费专项资金(310829171005;310827171006)~~

摘　　要：为了研究泾惠渠灌区的地下水动态特征,探讨面积-高程积分在地下水动态分析中的可行性,利用ArcGIS空间分析工具计算了灌区地下水面积-高程积分数据,绘制了不同时期的地下水面积-高程积分曲线,分析了灌区地下水水位与储存量动态特征。结果显示:1978?—?2012年,泾惠渠灌区地下水面积-高程积分值为0.46、0.44、0.38、0.39,表明地下水水位与储存量整体呈下降趋势;1991?—?2012年,410.00?—?446.19 m水位区间面积由1978年的2.54下降为0,342.51?—?360.00 m水位区间面积多年持续增加,中等水位区间存在演化差异性,反映出不同时期地下水开发强度具有空间变异性;以1978年为基准,至2012年地下水储存量减少约7.08×10~8 m^3;降水、地表水引水量、人工开采是影响泾惠渠灌区地下水动态的重要因素,补排失衡是引起灌区地下水储存量下降的主要原因。研究表明:面积-高程积分曲线可以表征地下水水位空间结构特征和储存量的变化情况,利用面积-高程积分值能够近似估算地下水储存量变化量,证明了面积-高程积分在地下水动态研究中具有一定的实用性。Background, aim, and scope Groundwater is an important water resources and a significant factor in maintaining regional environmental health and ecological balance. The combined effect of human activities and climate change has led to changes in the groundwater environment that inevitably have a corresponding impact on groundwater dependent ecosystems. Therefore, an accurate analysis of the dynamic characteristics of groundwater has important practical significance for making rational strategies of groundwater exploitation, the protection of ecological balance and the sustainable development of society and economy. The hypsometric integral is a quantitative index to study the relationship between the horizontal cross-sectional area and its elevation, which is a kind of the quantitative analysis to reflect the status and erosion trend of the geomorphology. It is widely used in the research of geomorphic evolution, evaluation of lithology and tectonics, hydrological characteristics analysis of drainage basin. From the perspective of spatial data model representation of ground objects, both the shallow groundwater surface and the drainage basin topography surface can be described by digital elevation model and have the same mathematical basis for the hypsometric integral analysis. By analyzing the variation characteristics of groundwater surface, the hypsometric integral analysis provides an applicable method for studying groundwater dynamics. Jinghuiqu irrigation district is an important food and vegetable production base in Shaanxi Province where residents mainly rely on groundwater. In recent years, the groundwater level and storage in the region has been impacted by industrial and agricultural activities. The study was carried out to analyze the groundwater dynamics in the region, and discuss the role of hypsometric integral in the groundwater dynamic analysis. Materials and methods Shallow groundwater level data in 4 periods of 1978, 1991, 2001 and 2012 was filtered by interval of about 10 a which derived from

关 键 词：面积-高程积分 地下水 动态 分析 泾惠渠灌区 

分 类 号：P641[天文地球—地质矿产勘探] S273.4[天文地球—地质学]