Using DEM and GIS for evaluation of groundwater resources in relation to landforms in the Maharlou-Bakhtegan watershed, Fars province, Iran

Journal of Water and Land Development

Marzieh Mokarram^1¹  Dinesh Sathyamoorthy^3²  Mehran Shaygan^2³ 

[1] 71946-84471^1;Malaysia^3;Tehran^2

关键词: compound topographic index (CTI);    digital elevation model (DEM);    geographic information system (GIS);    groundwater;    landforms;    Maharlou-Bakhtegan;    topographic position index (TPI);   

DOI  :  10.2478/jwld-2018-0031

学科分类：农业科学（综合）

来源: Instytut Technologiczno-Przyrodniczego / Institute of Technology and Life Sciences

【 摘 要 】

The study of groundwater resources in relation to topography is important. Clearly, in different topography, depth of the water level is different. Therefore, the aim of this study is the determination of the relationship between landform classes with compound topographic index (CTI) and depth of the water for the Maharlou-Bakhtegan watershed, Fars Province, Iran. In order to evaluate the depth of the water for the study area, CTI and geomorphology (landforms) were derived from a Shuttle Radar Topography Mission (SRTM) digital elevation model (DEM). The results of landform classes extracted using topographic position index (TPI) showed that the largest landform is open slope, while the smallest are plains. It was found that CTI and depth of the water values are high in plain classes, while they are low in local ridges. High depth of the water were found to be mostly confined to the pit regions in the plain landform, because groundwater recharge occurs in the zones where standing water remains for sufficient long period of time and has favourable condition for recharge.

【 授权许可】

Unknown