Pedogenic Carbonate and Soil Dehydrogenase Activity in Response to Soil Organic Matter in Artemisia ordosica Community

Little attention has been paid to the role of soil organic matter （OM） in the formation of pedogenic carbonate in desert soils. The relationships among soil OM, soil dehydrogenase activity （DHA）, and soil CaCO3 in a plant community dominated by Artemisia ordosica, located on the eastern boundary of...

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Bibliographic Details
Published in:Pedosphere 2010-04, Vol.20 (2), p.229-235
Main Authors: ZHANG, Ning, HE, Xing-Dong, GAO, Yu-Bao, LI, Yong-Hong, WANG, Hai-Tao, MA, Di, ZHANG, Rui, YANG, S.
Format: Article
Language:English
Subjects:
arid area
Artemisia
biotic process
soil calcium carbonate
spatial heterogeneity
Tengger Desert
土壤有机质
成土过程
有机质含量
植物群落
碳酸盐岩
碳酸钙
脱氢酶活性
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Summary:Little attention has been paid to the role of soil organic matter （OM） in the formation of pedogenic carbonate in desert soils. The relationships among soil OM, soil dehydrogenase activity （DHA）, and soil CaCO3 in a plant community dominated by Artemisia ordosica, located on the eastern boundary of Tcngger Desert in the Alxa League, Inner Mongolia, China, were studied to understand whether OM was directly involved in the formation of pedogenic carbonate. The results showed that DHA and CuCO3 positively correlated with OM content, and DHA, OM, and CaCO3 were correlated with each other in their spatial distribution, indicating that abundant OM content contributed to the formation of CaCO3. Therefore, the formation of pedogenic CaCO3 was a biotic process in the plant community dominated by A. ordosica.
ISSN:1002-0160
2210-5107
DOI:10.1016/S1002-0160(10)60010-0