[1]JIA Guomei,HE Li,LIU Xiao,et al.Characteristics of Soil Oxidizable Stable Organic Carbon in Riparian of Three Gorges Reservoir Area[J].Research of Soil and Water Conservation,2016,23(05):14-19.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 05
Page number:
14-19
Column:
Public date:
2016-10-28
- Title:
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Characteristics of Soil Oxidizable Stable Organic Carbon in Riparian of Three Gorges Reservoir Area
- Author(s):
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JIA Guomei1,2, HE Li1, LIU Xiao3, DAN Feijun1, CHEN Fangqing1,2
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1. College of Biological and Pharmaceutical Sciences, Three Gorges Univiersity, Yichang, Hubei 443002, China;
2. Hubei International Scientific and Technological Cooperation Center of Ecological Conservation and Management in Three Gorges Area, Three Gorges Univiersity, Yichang, Hubei 443002, China;
3. Department of Chemistry, Stony Brook University, New York 11794, USA
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- Keywords:
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riparian of Three Gorges Reservoir Area; organic carbon; oxidizable fractions; liability index
- CLC:
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S153.6+21
- DOI:
-
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- Abstract:
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The different oxidizability of soil organic carbon influcences soil quality and carbon. The objective of this study was to determine the change in soil oxidizable organic carbon fractions (F1, F2, F3, F4) at different elevation gradients in riparian wetland of Three Gorges Reservoir Area. The results showed that oxidizable organic carbon fraction F1 and F1/TOC (total organic carbon) were the highest among the sample sites. Although readily oxidizable carbon and F2, F3, and F4 in riparian zone were lower than those in the control upland, F1 had no significant difference between the sites of 155~165 m and the control upland. In riparian zone, readily oxidizable carbon and F1 were higher in the sites of 155~165 m than those in the other sites, whereas there was no significant difference for F2, F3, and F4 among sites. Soil readily oxidizable carbon and oxidizable organic carbon fractions showed the significantly positive relationship with soil total organic carbon, whereas F3 and F4 showed the significant positive relationship with total nitrogen. Liability index followed the order: 155~165 m > 145~165 m > 165~175 m, indicating that the lability of carbon followed the same order in riparian zone of Three Gorges Reservoir Area.