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[1]FU Jianxin,CAO Guangchao,GUO Wenjiong.Terrain Gradient Change of Land Use and Its Geographical Detector of Terrain Factors on the South-Facing Slope of Qilianshan Mountains from 1980 to 2018[J].Research of Soil and Water Conservation,2021,28(06):371-381.

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Terrain Gradient Change of Land Use and Its Geographical Detector of Terrain Factors on the South-Facing Slope of Qilianshan Mountains from 1980 to 2018

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 28 Number of periods: 2021 06 Page number: 371-381 Column: Public date: 2021-10-10

Title:: Terrain Gradient Change of Land Use and Its Geographical Detector of Terrain Factors on the South-Facing Slope of Qilianshan Mountains from 1980 to 2018

Author(s):: FU Jianxin¹，CAO Guangchao²，GUO Wenjiong¹; (1.Institute of Urban and Regional Development，Taiyuan Normal University，Jinzhong，Shanxi 030619，China; 2.Key Laboratory of Tibetan Plateau Land Surface Processes and Ecological Conservation，Ministry of Education，Xining 810008，China; 3.Qinghai Province Key Laboratory of Physical Geography and Environmental Process，Qinghai Normal University，Xining 810008，China)

Keywords:: land use; terrain gradient; geographical detector; south-facing slope of Qilianshan Mountains

CLC:: F301.24; K903

DOI:: -

Abstract:: In order to study the pattern of temporal and spatial changes of land use of different terrain gradients，based on remote sensing(RS)data during 1980—2018，the spatial and temporal characteristic changes of land use at different altitudes，slopes and slope aspects on the south-facing slope of Qilianshan Mountains were studied by ArcGIS 12.0. The results showed that grassland was the most important land use type on the south-facing slope of Qilianshan Mountains，farmland and construction land both mainly distributed in the Menyuan Basin with the altitude of 2 700～3 200 m，slope<5°，sunny slope and half sunny slope. Woodland and grassland were both closely related to altitude，slope and slope aspects. Construction land was greatly affected by altitude and slope; unused land was greatly affected by altitude. Farmland and construction land had a greatest increase in areas of altitude 2 700～3 200 m，slope<5°，southwest slope，south slope，unused land had a greatest increase in areas of altitude 4 200～4 700 m，slope 30°～35°，southwest slope，south slope and northeast slope，woodland，grassland and water areas had decreased most at areas with altitudes of 3 700～4 200 m，2 700～3 200 m，4 200～4 700 m，respectively，grassland had decreased most at areas with slope<5°，woodland，grassland，water areas had decreased most on north slope，southwest slope and northeast slope. Influence degree of terrain factors on land use decreased in the order: altitude>slope>slope aspect，interaction of altitude and slope，altitude and slope aspect had the great influence on land use degree. Land use changes based on different terrain gradients show obvious temporal and spatial differences.

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Last Update: 2021-10-10