Abstract: Based on the RS image of Longitudinal Range-Gorge Region (LRGR) in 2001, thestudyarea was classified into seven first-class landscape types (forestland, grassland, farmland, wetland, water body, urban land, and glacier), and 26 second-class landscape types in consideration of climate belt, vegetation, and topography. By using GIS technology, the services value of different landscape types of LRGR were studied in regards to the study results on services value of Chinese terrestrial ecosystems. The results indicated that the total services value of LRGR was 5 302.35×10⁸ yuan·a^-1, accounting for 9.47% of the whole country. The service value of soil conservation was the highest, which occupied 18.05% of the total services value, while the service values of gas adjustability and biodiversity protection ranked the second and third. Due to its distribution extent and services intensity per unit area, the forest landscape, which covered 6611% of the total area, contributed most (85.34%) to the total service value of LRGR, followed by grassland and farmland landscapes.

Key words: Lüsi fishing ground, fish, ecological group, species composition, dominant species.