Land cover of Koshi Basin 1990

High levels of water-induced erosion in the transboundary Himalayan river basins are contributing to substantial changes in basin hydrology and inundation. Basin-wide information on erosion dynamics is needed for conservation planning, but field-based studies are limited. Part of the remote sensing (RS) and a geographic information system (GIS) based soil erosion estimation and spatial distribution of across the entire Koshi basin, a land cover map of 1990 used as a Support practice factor (PL). Land cover data for 1990 were prepared from analysis of the Landsat images using object-based image analysis.

跨境喜马拉雅山脉河流流域内因水力侵蚀导致的高水平侵蚀现象，正导致流域水文和淹没状况发生显著变化。为了制定保护规划，亟需全流域侵蚀动力学的相关信息，但基于现场的调查研究却相对匮乏。本研究部分基于遥感（RS）和地理信息系统（GIS）对科希流域整个区域的土壤侵蚀估算及其空间分布进行了研究，并利用1990年的土地覆盖图作为支持性实践因子（PL）。1990年的土地覆盖数据是通过分析Landsat图像并采用基于对象的光学图像分析方法制备而成。