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- Title
Rainfall and soil moisture redistribution induced by xerophytic shrubs in an arid desert ecosystem.
- Authors
杨强; 查天山; 贾昕; 秦树高; 钱多; 郭晓楠; 陈国鹏
- Abstract
Rainfall partitioning by desert shrub canopy modifies the redistribution of incident rainfall under the canopy, and may affect the distribution pattern of soil moisture around the plant. This study examined the distribution of rainfall and the response of soil moisture beneath the canopy of two dominant desert shrubs, Caragana korshinskii and Artemisia ordosica, in the revegetation area at the southeastern edge of the Tengger Desert. The results showed that throughfall and stemflow averagely occupied 74.4%, 11.3% and 61.8%, 5.5% of the gross precipitation for C. korshinskii and A. ordosica, respectively. The mean coefficients of variation (CV) of throughfall were 0.25 and 0.30, respectively. C. korshinski were more efficient than A. ordosica on stemflow generation. The depth of soil wetting front around the stem area was greater than other areas under shrub canopy for C. korshinski, and it was only significantly greater under bigger rain events for A. ordosica. The shrub canopy could cause the unevenness of soil wetting front under the canopy in consequence of rainfall redistribution induced by xerophytic shrub.
- Publication
Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao, 2016, Vol 27, Issue 3, p755
- ISSN
1001-9332
- Publication type
Article
- DOI
10.13287/ j.1001-9332.201603.029