Abstract: Using Landsat remote sensing images in 1990, 2000, 2010 and 2019 as data sources, and using ENVI5.3 and ArcGIS 10.2 platforms, the transfer matrix was established and the comprehensive land use index and dynamic attitude were calculated by combining the methods of supervision classification and visual interpretation to obtain the land use change information of the Wulungu river basin in recent 30 years. The results showed that from 1990 to 2019, grassland, arable land, water area and construction land area had increased, while forestland and unused land had decreased. In 1990, 2000, 2010 and 2019, the comprehensive index of land use degree was respectively 139.59, 140.74, 147.34 and 150.84, showing a gradual rising trend, indicating that the land use of the Wulungu river basin in recent 30 years had been in the development stage, especially from 2000 to 2010, with the fastest speed of land use and development. From 1990 to 2019, the largest land use dynamic attitude was construction land, with a value of 18.97%, thus it could be seen that the quantity of construction land changes the most and the state was the most drastic, followed by cultivated land, forest land, water area, unused land and grassland. As an important water source of Fuhai county, Qinghe county and Fuyun county in Altay region, Wulungu river played a key role in the development of these regions. The watershed land should be developed in a standard, reasonable and moderate way, so as to help restore the ecological environment and make its sustainable development.

Key words: land use change, transfer matrix, dynamic attitude, Wulungu river basin