利用遥感数据研究红层丘陵区地下水赋存规律

利用遥感数据对地物进行识别是获取地物信息的一种重要手段。在重庆荣昌县红层丘陵严重缺水区地下水勘查新技术应用课题研究中,选取Landsat ETM数据和彩红外影像为数据源,以影响丘陵区地下水赋存的主要因素为研究对象,建立解译标志,分析研究遥感影像特征,计算机自动划分微地貌类型,采用监督分类与非监督分类方法对红层丘陵区地表水体、土壤湿度信息进行识别。在此基础上结合常规水文地质调查方法,对地下水补、径、排条件进行分析,划分出适宜于分散家户打井的区域。

Study on the Groundwater Storage Rule in Redbed Mound Areas by Remote Sensing Data

It's an important mean to identify the ground object and obtain its information by remote sensing.The new technique was studied at the redbed mound and groundwater deficient regions of Rongchang,Chongqing,ETM images and color-infrared aerial photographs were served as data source,and principal factor was used to determine the subject of investigated,which impacts on the mound regions' groundwater storage.In order to establish the interpretation marks,an analysis the feature of remote sense image,dividing microtopography by computer were conducted and,surface water and wet soil information was identified using supervised and unsupervised classification methods in redbed mound regions.Based on those,recharge condition,runoff and discharge was analysed with hydrogeology survey methods,and regions that it adapt to drill well were divided for individual residents.