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[1]TAN Lihai,ZHANG Weimin,BIAN Kai,et al.Effect of Gravel Mulch on Soil and Water Conversation—A Case Study in the Northern Edge of Hobq Desert[J].Research of Soil and Water Conservation,2017,24(06):172-178.

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Effect of Gravel Mulch on Soil and Water Conversation—A Case Study in the Northern Edge of Hobq Desert

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 06 Page number: 172-178 Column: Public date: 2017-11-24

Title:: Effect of Gravel Mulch on Soil and Water Conversation—A Case Study in the Northern Edge of Hobq Desert

Author(s):: TAN Lihai¹, ZHANG Weimin¹, BIAN Kai¹, GAO Yang¹, ZHONG Shuai²; 1. Dunhuang Gobi Desert Research Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;
2. Elian Resources Group, Dongsheng, Inner Mongolia 017000, China

Keywords:: gravel mulch; wind erosion; soil temperature and moisture; Hobq Desert

CLC:: S157

DOI:: -

Abstract:: The control of wind erosion is crucial to the development of deserticulture in the Hobq Desert. This study discussed the protective effect of gravel mulch against wind erosion as well as its influence on soil temperature and humidity through wind tunnel experiments and field observation, aiming to provide the scientific basis for the application of gravel mulch to wind erosion control in the Hobq Desert. The results show that gravel beds composed of gravels in 3 cm diameter have significant effect of wind-reducing and erosion control, and the inhibition ratio of wind erosion ranges 49.4%~100%. Under experimental wind speeds of 10 to 16 m/s and as gravel coverage reaching 50%, gravel beds are aerodynamically stabile, and the inhibition ratio of wind erosion is more than 96%. In aeolian engineering, gravel mulch in coverage of 40%, with a wind erosion inhibition ratio of more than 93%, can achieve the purpose of preventing wind erosion in the Hobq Desert. Meantime, it can play a role of cooling in daytime and preserving heat at night, thus reducing the damage of extreme temperature to crops and also improving soil moisture content. This study can provide reference for the application of gravel mulch to wind erosion protection in the other arid areas.

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