Singh, R. and Kumar, P. 2022. A Review of Remote Sensing and GIS based Change Detection Techniques for Identification of Sites need Ecological Restoration in Garhwal Himalayas. Indian Forester. 148, 12 (Dec. 2022), 1251–1258. DOI:https://doi.org/10.36808/if/2022/v148i12/167503.