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[1]SU Jianhua,WANG Chunmei,PANG Guowei,et al.Spatial Distribution of Gullies in the Loess Plateau[J].Research of Soil and Water Conservation,2023,30(01):134-143,153.[doi:10.13869/j.cnki.rswc.2023.01.028]

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Spatial Distribution of Gullies in the Loess Plateau

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 30 Number of periods: 2023 01 Page number: 134-143,153 Column: Public date: 2023-01-10

Title:: Spatial Distribution of Gullies in the Loess Plateau

Author(s):: SU Jianhua^1,2, WANG Chunmei^1,2, PANG Guowei^1,2, YANG Qinke^1,2, ZHONG Yuan^1,2, YANG Lijuan^1,2, YANG Annan^1,2, LIU Baoyuan^3,4; (1.Shaanxi Key Laboratory of Surface System and Environmental Carrying Capacity, Xi'an 710127, China; 2.College of Urban and Environmental Sciences, Northwest University, Xi'an 710127, China; 3.Higher Research Institute of Natural Sciences, Beijing Normal University, Zhuhai, Guangdong 519087, China; 4.State Key Laboratory of Earth Surface Processes and Resource Ecology, School of Geography, Beijing Normal University, Beijing 100875, China)

Keywords:: Loess Plateau; sub-meter remote sensing image; visual interpretation; gullies; spatial distribution

CLC:: S157.1

DOI:: 10.13869/j.cnki.rswc.2023.01.028

Abstract:: The exploration on the spatial distribution of gullies at the regional scale is of great importance to the prevention and control of gullies in the Loess Plateau, as well as the soil and water conservation planning in the middle reaches of the Yellow River. In this paper, based on Google Earth sub-meter remote sensing images, 256 small watershed sampling units were arranged using the systematic sampling method, and the spatial distribution characteristics of gullies in the Loess Plateau were studied adopting the visual interpretation method. The results reveal that:(1)gullies were found in 92 sampling units, accounting for 35.94% of the total number of sampling units; the average density of gullies in the Loess Plateau reaches 1.47 km/km², mainly in small gully; the mean values of the gullies length, width and distance from hill top were 43.53 m, 6.30 m and 71.19 m, respectively;(2)gullies in the Loess Plateau mainly distributed near the 400 mm isohyetal line, especially in Yan'an and its west to Guyuan, Yulin and its north to Dongsheng, the distribution of small gullies was basically consistent with the overall distribution of gullies; meanwhile, the distribution of large gullies was relatively scattered and most of them are prominent in Tianshui and Dingxi;(3)at present, the gullies are located the types of the land use of the slope mainly including grassland(48.51%), cultivated land(29.76%)and forest land(17.27%)in the Loess Plateau. These results can provide a theoretical basis for the zoning treatment planning of gullies erosion in the Loess Plateau.

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Last Update: 2023-01-10