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JOURNAL OF DESERT RESEARCH  2013, Vol. 33 Issue (5): 1400-1405    DOI: 10.7522/j.issn.1000-694X.2013.00205
Biology and Soil     
Effects of Rainfall Redistribution Induced by Xerophytic Vegetation on Soil pH
ZHANG Ya-feng1,2, WANG Xin-ping1, HU Rui1,2, PAN Yan-xia1
1.Shapotou Desert Research and Experiment Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;
2.University of Chinese Academy of Sciences, Beijing 100049, China
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Abstract  

We measured the pH of gross rainfall, stemflow and throughfall, and the pH of soils that are adjacent to the shrub base, beneath the canopy and in the intershrub spaces of two dominant desert shrubs (Caragana korshinskii and Artemisia ordosica), respectively, in the revegetation area established in 1989 of Shapotou area, at the southeastern edge of the Tengger Desert. The study aimed to examine the effects of rainfall redistribution induced by xerophytic vegetation on soil pH variations. Significant differences (p<0.05) in pH were found between stemflow, throughfall and gross rainfall, with the highest in the gross rainfall, followed by throughfall and stemflow. Soil pH in the intershrub spaces was the highest, followed by that beneath shrub canopy and that adjacent to the shrub base. Soil pH in the 0-10 cm soil profile generally had a lower value than in 10-20 cm soil profile. Soil acidification induced by stemflow of C. korshinskii was more intense than that of A. ordosica. Stemflow and throughfall acidification is considered as an important factor resulting in the decrease of soil pH in the direction from the inthershrub spaces to the shrub base.

Key words:  stemflow      throughfall      gross rainfall      pH      soil      Caragana korshinskii      Artemisia ordosica     
Received:  17 August 2012      Published:  28 August 2012
ZTFLH:  S715.2  

Cite this article: 

ZHANG Ya-feng1,2, WANG Xin-ping1, HU Rui1,2, PAN Yan-xia1. Effects of Rainfall Redistribution Induced by Xerophytic Vegetation on Soil pH. JOURNAL OF DESERT RESEARCH, 2013, 33(5): 1400-1405.

URL: 

http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00205     OR     http://www.desert.ac.cn/EN/Y2013/V33/I5/1400

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