Abstract:

In this study,remote sensing technology and forest resources survey data were used for analyzing the spatial changes of forest land and forest biomass in natural forest protection project area of Western Tianshan mountains in Xinjiang.Two temporal remote sensing images were used for obtaining forest land distribution and biomass by means of andom forest classification and biomass model.Thus,The change of forest types and biomass were obtained.The results showed that from the year of 2010—2016 the change of non-forestry Land was obvious with 7 370.1 hm² being turned into forest land and 11 536.23hm² into shrub land.The overall biomass increased by 1.26 million tons,an increase of 2.49%,the volume increased by 208.74 million cubic meters,an increase of 2.99%.

Key words: natural forest protection project, Picea schrenkiana, RS classification, forest biomass, forest stocking volume