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[1]HU Guifeng,WANG Xinjun,CHANG Mengdi,et al.Assessment on the Impact of Grazing Disturbance on Spatial Characteristics of Soil Erosion on the Northern Slope of Tianshan Mountains[J].Research of Soil and Water Conservation,2021,28(05):13-21.

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Assessment on the Impact of Grazing Disturbance on Spatial Characteristics of Soil Erosion on the Northern Slope of Tianshan Mountains

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 28 Number of periods: 2021 05 Page number: 13-21 Column: Public date: 2021-08-20

Title:: Assessment on the Impact of Grazing Disturbance on Spatial Characteristics of Soil Erosion on the Northern Slope of Tianshan Mountains

Author(s):: HU Guifeng^1,2,WANG Xinjun^1,2,CHANG Mengdi^1,2,YAN Linan^1,2,HAN Qifei³,LI Juyan⁴,LI Yongkang^1,2; (1.College of Grassland and Environment Sciences,Xinjiang Agricultural University,Urumqi 830052,China; 2.Xinjiang Key Laboratory of Soil and Plant Ecological Processes,Urumqi 830052,China; 3.School of Geographic Sciences,Nanjing University of Information Science & Technology,Nanjing 210044,China; 4.General Station Soil and Water Conservation and Ecological Environment Monitoring of Xinjiang,Urumqi 830000,China)

Keywords:: grazing disturbance; soil erosion; Biome-BGC model; defoliation formulation; CSLE model; north slope of Tianshan Mountains

CLC:: S157.1

DOI:: -

Abstract:: To quantitatively study the impact of grazing disturbance on soil erosion on the northern slope of Tianshan Mountain,the biomass before and after grazing disturbance was simulated based on the Biome-BGC model and the defoliation formulation. The ‘biomass-vegetation coverage' model was used to estimate biological measure factors. The Chinese soil loss equation was employed to explore the construction of a quantitative assessment model of grazing disturbance on soil erosion,the spatial characteristics of soil erosion before and after grazing disturbance on the northern slope of Tianshan Mountains in 2019 and the degree of impact on soil erosion were spatially and explicitly expressed. The results show that:(1)the average grazing intensity of the pastures on the northern slope of Tianshan Mountain in 2019 was 8.11 sheep/hm²,the highest was found in Changji City(12.24 sheep/hm²),and the lowest was found in Manas County(1.87 sheep/hm²);(2)the spatial characteristics of soil erosion before and after grazing disturbance on the pastures on the northern slope of Tianshan Mountains were consistent on seasonal pastures,and the order was summer pasture>winter pasture>spring and autumn pasture;(3)soil erosion modulus on the northern slope of Tianshan Mountain decreased in the order: 20.65% in spring and autumn pastures>15.57% in summer pastures>15.46% in winter pastures on seasonal pastures,and 31.93% in Shawan County>24.24% in Fukang City>Daban City 22.04%>Urumqi County 7.56%>Manas County 5.34%>Changji City 5.30%>Hutubi County 4.37%. Grazing disturbance is the main influencing factor of soil erosion in spring and autumn pastures in the study area and all pastures in Shawan County. Natural conditions are the main influencing factors of soil erosion in summer and winter pastures in the study area and all pastures in Urumqi County and Changji City. This research can provide the reference for quantitatively characterizing the influence of grazing disturbance on soil erosion,and provide a certain scientific basis for soil and water conservation in the grazing area of the northern slope of Tianshan Mountains.

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Last Update: 2021-08-20