[1]LI Xinkai,BU Chongfeng,LI Yiping,et al.Influences of Moss Crusts on Soil Moisture and Wind Erosion Under Grazing Disturbance in Mu Us Sandy Land[J].Research of Soil and Water Conservation,2018,25(06):22-28.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
25
Number of periods:
2018 06
Page number:
22-28
Column:
Public date:
2018-10-26
- Title:
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Influences of Moss Crusts on Soil Moisture and Wind Erosion Under Grazing Disturbance in Mu Us Sandy Land
- Author(s):
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LI Xinkai1,2, BU Chongfeng1,3, LI Yiping4, LI Bingyin3, JU Mengchen3, WANG Qingxuan1,2
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1. Institute of Soil and Water Conservation, CAS & MWR, Yangling, Shaanxi 712100, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3. Institute of Soil and Water Conservation, Northweast A & F University, Yangling, Shaanxi 712100, China;
4. College of Water Resources and Architectural Engineering, Northweast A & F University, Yangling, Shaanxi 712100, China
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- Keywords:
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moss crusts; soil moisture; wind erosion; Mu Us Sandy Land
- CLC:
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S157
- DOI:
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- Abstract:
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This research has implemented a stationary monitoring experiment of soil moisture and wind erosion within the typical sampling plot in Mu Us Sandy Land, which is for the purpose of understanding the influences of biological soil crusts on soil moisture and wind erosion, and discusses the feasibility of moderate disturbance in improving the condition of soil moisture. The results indicated that: (1) for Artemisia desertorum, Salix psammophila and Caragana korshinskii, the moss crusts were able to improve the soil moisture of root layer of 0—80 cm but meanwhile reduced the soil moisture of deep layer of 80—200 cm; soil moisture also could be increased by the undisturbed moss crusts among plants; for root layer of 0—80 cm and deep layer of 80—200 cm, ‘severe disturbance’ was positive for the improving of soil moisture; (2) moss crusts were beneficial for reducing sediment by wind erosion under Artemisia desertorum, Salix psammophila and Caragana korshinskii, the quantity of wind erosion of moss crusts under Artemisia desertorum, Salix psammophila and Caragana korshinskii decreased by 92.8%, 11.3% and 104.2%,respectively, compared with the bare land under these three plants; it is more vulnerable for soil to be eroded by wind if the soil suffered ‘excessive disturbances’ or above;(3) in this research, the moss crusts with ‘severe disturbance’ was in favor of improving soil moisture in 0—200 cm if the wind erosion would not aggravate in this case, which confirmed the feasibility of moderate disturbance.