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| Effect of wind direction and Artemisia ordosica on the distribution pattern of biological soil crust |
| Liu Fa1,Zhang Guanghui1,Yang Hailong2,Gao Jiarong2,Cui Qiang2,3,Li Bai2,3 |
| 1. School of Geography, Beijing Normal University, 100875, Beijing, China;2. Key Laboratory of Soil & Water Conservation and Desertification Combating, Ministry of Education, College of Soil and Water Conservation, Beijing Forestry University, 100083, Beijing, China;3. Yanchi Desert Ecosystem Research Station of Ningxia, Beijing Forestry University, 751500, Yanchi, Ningxia, China |
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Abstract The distribution pattern of biological soil crust under Artemisia ordosica in Mu Us sandy land and its driving factors were analyzed by means of line transect sampling. The results showed that there were obvious differences in the thickness of biological soil crust around A. ordosica. The maximum of the thickness was found on the northwest of the plant. The thickness on the southwest and northeast of the plant were the thinnest and showed no significant differences. The thickest of the rust, 1-10 cm on average, were about 0 -20 cm apart from the A. ordosica. The thickness of biological soil rust varied with its distance from the plant. Within 60 cm, the nearer it was from the plant, the thicker the rust was. The distributions of biological soil rust were relevant to the wind direction and the distance from A. ordosica. Affected by the wind direction, A. ordosica could help retain more dust and accelerate the development of biological soil rust on the northwest. Meanwhile,A. ordosica plants provide favorable conditions for the growth of biological soil crust.
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Received: 24 December 2013
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