基于多光谱影像的伪绿化率对地下水影响研究  

Research on the Influence of Ground Hardening Rate to the Groundwater Recharge Based on Multispectral Images

作　　者：王铁生[1] 武珂 王志瑾 刘辉[1] WANG Tiesheng;WU Ke;WANG Zhijin;LIU Hui(North China University of Water Resources and Electric Power,Zhengzhou 450045,China)

机构地区：[1]华北水利水电大学,河南郑州450045

出　　处：《人民黄河》2021年第6期60-62,67,共4页Yellow River

基　　金：国家自然科学基金资助项目(41901411)。

摘　　要：为了研究地面硬化率过大切断了大气降水对地下水垂直补给,造成地下水位下降引起的一系列环境问题,在多光谱遥感估算地面硬化率研究的基础上,引入伪绿化率的概念,估算了地面硬化率对地下水补给的影响,并分析了地面硬化率与径流量的关系。以郑州市金水区为实例,通过计算得出所调查的区域建设后径流量增大,地表径流增量约为建设前径流量的1.9倍,年平均大气地下水补给损失量占建设前补给量的85.3%~87.1%。遥感估测得出实际地面硬化率约为58.3%,伪绿化率约为20%,地下水补给损失量约为210万m~3,与实际踏勘情况相符。In order to study a series of environmental problems caused by the decrease of groundwater level due to the large surface hardening area which cut off the vertical recharge of atmospheric precipitation to groundwater,on the basis of the study on the estimation of land hardening rate by multi-spectral remote sensing,the concept of pseudo green rate was introduced to estimate the effect of land hardening rate on the recharge of groundwater and the relationship between land hardening rate and runoff was analyzed.Taking the construction of Jinshui District of Zhengzhou City as an example,the result of calculation shows that the surface runoff is about 1.9 times of that before construction due to the increase of runoff,and the annual average atmospheric groundwater recharge loss accounts for 85.3%-87.1% of the recharge before construction.According to remote sensing estimation,the actual ground hardening rate accounts for about 58.3% of the study area,among which the pseudo greening area accounts for about 20% and the loss of groundwater recharge is about 2.1 million m3,which is consistent with the actual survey situation.

关 键 词：多光谱遥感 地面硬化率 伪绿化率 地下水 

分 类 号：TV213.4[水利工程—水文学及水资源] P407.8[天文地球—大气科学及气象学]