期刊
ADVANCES IN WATER RESOURCES
卷 29, 期 10, 页码 1556-1564出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.advwatres.2005.11.006
关键词
semi-arid grasslands; vegetation banding; stability analysis; seasonality of rainfall; soil moisture storage
The delicate equilibrium of soil moisture and biomass may become unstable under water scarcity conditions causing banded vegetation patterns to form on hillsides of semi-arid catchments. Soil related processes that induce instability (namely: soil moisture advection and diffusion), have been evaluated numerically for different rainfall regimes. This study addresses the combined influence of some relevant soil characteristics, and the effect of seasonal precipitation on vegetation patterns, advancing the comprehension of those mechanisms that cause shifts toward banded vegetation patterns or bare states. (C) 2005 Elsevier Ltd. All rights reserved.
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