[1]LIANG Hui,TIAN Meirong,QIAN Jinping,et al.Soil Wind Erosion Characteristics and Influence Factors in Ningxia Based on Wind Erosion Model[J].Research of Soil and Water Conservation,2019,26(01):34-40.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 01
Page number:
34-40
Column:
Public date:
2019-02-28
- Title:
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Soil Wind Erosion Characteristics and Influence Factors in Ningxia Based on Wind Erosion Model
- Author(s):
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LIANG Hui1,2, TIAN Meirong2, QIAN Jinping1, ZHANG Hui2, SONG Jie3
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1. College of Resources and Environmental Sciences, Laboratory of Environmental Evolution and Ecological Construction of Hebei Province, Hebei Normal University, Shijiazhuang 050024, China;
2. Nanjing Institute of Environmental Science, ministry of Environmental Protection, Jiangsu, Nanjing 210042, China;
3. Shandong Academy for Environmental Planning, Jinan 250000, China
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- Keywords:
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soil erosion; spatiotemporal variation; factor analysis; Ningxia
- CLC:
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X826
- DOI:
-
-
- Abstract:
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In order to illustrate the soil erosion characteristics in Ningxia, based on the wind erosion model which was recommend in the first national water resources census, and the model parameters revised by field soil samples and wind tunnel test, the spatiotemporal variation characteristics of soil wind erosion in Ningxia from 2000 to 2015 were analyzed by using remote sensing and geographic information system technology. Meanwhile, the main factor influencing wind erosion was confirmed by utilizing variation coefficient method. The results showed that the regions of mild and light wind erosion intensity included the west of Shizuishan, the west and east of Yinchuan, the central-north of Wuzhong, the central of Zhongwei and the most parts of Guyuan; the regions of moderate and higher wind erosion intensity included the sand and desert area of Shapotou, Lingwu, Yanchi, Pingluo, Xingqing, Helan and Jinfeng. In terms of time series, the total area and intensity of wind erosion decreased during the study period. In terms of wind erosion land type, the wind erosion intensity decreased in the order:sand > arable land > bare ground > grassland > woodland, of which average wind erosion intensities were 47.39 t/(hm2·a), 5.77 t/(hm2·a), 1.82 t/(hm2·a), 1.48 t/(hm2·a), 1.00 t/(hm2·a), respectively. The major impact factor on wind erosion intensities in Yinchuan, Wuzhong, Guyaun and Zhongwei was soil moisture, the vegetation coverage was the next factor affecting the wind erosion intensities in these areas. The major impact factor on wind erosion intensities in Shizuishan was the accumulative time of exceeding the wind velocities causing sand move.