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JOURNAL OF DESERT RESEARCH  2009, Vol. 29 Issue (1): 23-30    DOI:
沙漠与沙漠化     
Vegetation-Erosion Process in Semiarid Region: Ⅰ. Dynamical Models

LI Zhen-shan, WANG Yi, HE Li-min

Department of Environmental Engineering, Peking University, Beijing, 100871, China; The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing, 100871, China
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Abstract  

Vegetation cover variation and wind-sand movement are two main and interactional surface processes in semiarid region. A coupling model of vegetation and sand-blown dynamics was set up. This model consists of two equations: dynamical biomass equation and dynamical wind erosion equation. Dynamical biomass equation mainly considers the conversion of potential productivity of vegetation on the surface with vegetation cover and non-vegetation cover, the self consumption biomass and the influence of wind erosion. Dynamical wind erosion equation mainly considers the potential wind erosion on drifting sand and non-drifting sand, and the influence of biomass. The parameters of the model are calibrated.

Key words:  semiarid region      vegetation coverage      aeolian activity      dynamical coupling model     
Received:  02 July 2007      Published:  20 January 2009
ZTFLH:  S157.1  
Articles by authors
LI Zhen-shan
WANG Yi
HE Li-min

Cite this article: 

LI Zhen-shan;WANG Yi;HE Li-min. Vegetation-Erosion Process in Semiarid Region: Ⅰ. Dynamical Models. JOURNAL OF DESERT RESEARCH, 2009, 29(1): 23-30.

URL: 

http://www.desert.ac.cn/EN/     OR     http://www.desert.ac.cn/EN/Y2009/V29/I1/23

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