[1]LIU Dongqing,GONG Jie,ZHANG Jinxi,et al.Spatiotemporal Variation of Soil Conservation Function and Its Influencing Factors in Bailongjiang Watershed in Gansu Province[J].Research of Soil and Water Conservation,2018,25(04):98-103.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
25
Number of periods:
2018 04
Page number:
98-103
Column:
Public date:
2018-06-13
- Title:
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Spatiotemporal Variation of Soil Conservation Function and Its Influencing Factors in Bailongjiang Watershed in Gansu Province
- Author(s):
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LIU Dongqing, GONG Jie, ZHANG Jinxi, MA Xuecheng
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Key Laboratory of Western China’s Environmental Systems, Ministry of Education, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China
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- Keywords:
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soil conservation; InVEST model; Geodetector; Bailongjiang Watershed in Gansu Province
- CLC:
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S157;X171
- DOI:
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- Abstract:
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Soil conservation is one of the regulatory services provided by ecosystems, which plays an important role in mitigating regional erosion and maintaining ecological security. Based on the InVEST model and Geodetector analysis, the spatiotemporal variation of the soil conservation function and its influencing factors of the Bailongjiang Watershed in Gansu Province were analyzed in this paper. The results showed that: (1) the soil conservation function constantly increased from 2002 to 2014 at the watershed scale, and the spatial pattern change of soil conservation was not obvious; (2) from 2002 to 2014, soil conservation function increased in all land use types, elevation, slope and aspect, respectively; the growth of soil conservation function decreased with the increase of elevation, and increased with the increase of slope; (3) the change of precipitation was the main factor influencing the change of watershed soil conservation function, it influenced apparently with the interaction of the crop unit area yield change and land use type change, respectively; while precipitation was uncontrollable, to decrease the disturbance of human agricultural activities and to increase the vegetation coverage would be great beneficial for the improvement of soil conservation function in Bailongjiang Watershed in Gansu Province. The results can provide reference for the soil conservation and ecosystem management in the mountainous area in northwestern China.