Pedosphere 20(2): 229--236, 2010
ISSN 1002-0160/CN 32-1315/P
©2010 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Pedogenic carbonate and soil dehydrogenase activity in response to soil organic matter in Artemisia ordosica community |
ZHANG Ning1, HE Xing-Dong1 , GAO Yu-Bao1, LI Yong-Hong2, WANG Hai-Tao1, MA Di1 and ZHANG Rui3, S. YANG3 |
1 College of Life Sciences, Nankai University, Tianjin 300071 (China)
2 Research Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071 (China)
3 Department of Biology, Pennsylvania State University, Pennsylvania 16802 (USA) |
| ABSTRACT |
| 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 Tengger 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 CaCO3 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. |
| Key Words: arid area, biotic process, soil calcium carbonate, spatial heterogeneity, Tengger Desert |
| Citation: Zhang, N., He, X. D., Gao, Y. B., Li, Y. H., Wang, H. T., Ma, D., Zhang, R. and Yang, S. 2010. Pedogenic carbonate and soil dehydrogenase activity in response to soil organic matter in Artemisia ordosica community. Pedosphere. 20(2): 229-236. |
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