Influences of biological soil crust in Artemisia ordosica community on the precipitation infiltration process

doi:10.7523/jssn.2095-6134.2014.02.011

Abstract

Abstract:

The response of different soil layers to different precipitations in both BSC and NBSC sites were analyzed using EC-5 soil moisture sensor during the whole rainy season. The results show that: 1) regardless of precipitation size the presence of BSC hindered the infiltration of precipitation, and this situation was more obvious in small precipitations; 2) most of the absorbing roots of A. ordosica were within the 40 cm soil, and the development of BSC caused serious impediment when the precipitation size was the less than 20 mm, which would result in the recession of A. ordosica in the fixed sand dunes if things continue in this way; and 4) the change of precipitation pattern would have an important impact on soil moisture and vegetation succession.

Key words: biological soil crust, soil moisture, Artemisia ordosica, Mu Us sandy land

CLC Number:

S152.7

ZHANG Junhong, WU Bo. Influences of biological soil crust in Artemisia ordosica community on the precipitation infiltration process[J]. , 2014, 31(2): 214-220.

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