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- W2392023144 abstract "By taking 1977, 2002 and 2010 Landsat images and 30 meters resolution DEM as data sources and using the spatial analyzing technology of GIS, a land-use database of Bailongjiang Watershed was established and the slope and terrain niche index charts were produced. The map of DEM, slope and terrain were respectively overlaid with land use landscape data. The spatial variations of land-use of altitudinal, slope and terrain gradient were discussed. The results showed that in recent 30 years, the construction land in Bailongjiang Watershed have extended to higher altitude and slopes, cultivated land of slope land first increased and then decreased, forest land changed from shrinking to gradual recovery. Because of human disturbance, the grassland, unused land and waters decreased. The basic form of terrain distribution index curve of each land use type from 1977 to 2010 was similar, but the distribution index of individual terrains changed obviously. The superiority of construction land in lower terrains increased and extended to higher terrains, and cultivated land was extending to higher terrains too. While the distribution index of woodland and grassland in low terrains first decreased and then increased, unused land in high terrains increased. The land use structure should be adjusted according to the terrain gradient, and unreasonable land use and human disturbance should be avoided. Ecological construction and governance of human activities should be optimized continuously." @default.
- W2392023144 created "2016-06-24" @default.
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- W2392023144 date "2014-01-01" @default.
- W2392023144 modified "2023-09-27" @default.
- W2392023144 title "Spatial distribution of land-use on terrain gradient in Bailongjiang Watershed of Gansu Province" @default.
- W2392023144 hasPublicationYear "2014" @default.
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