Himalaya region

The Himalaya is delineated using a Digital Elevation Model (DEM). The southern boundary is marked by the 375-meter contour line (that limits the northern plains from The Shivalik Range) while prominent geographical features such as the Main Boundary Thrust (MBT) in the Trans-Himalayas, the Tsang Po River, and the Indus River define the northern extent. The eastern boundary is set by manual digitisation of the Brahmaputra River Valley, and the western boundary by the Indus River Valley.本数据集依托数字高程模型（Digital Elevation Model, DEM）划定喜马拉雅山脉的范围。其南部边界以375米等高线为界，该界线将北部平原与西瓦利克山脉分隔开来；北部边界则由跨喜马拉雅山脉（Trans-Himalayas）内的主边界逆冲断层（Main Boundary Thrust, MBT）、雅鲁藏布江（Tsang Po River）与印度河（Indus River）等典型地理特征共同界定；东部边界通过对布拉马普特拉河谷（Brahmaputra River Valley）开展手动数字化工作确定，西部边界则以印度河谷（Indus River Valley）为界。