Effects of understory removal on soil labile organic carbon pool in a Cinnamomum camphora plantation

Taking a 48-year-old Cinnamomum camphora plantation in the eastern area of our subtropics as test object, this paper studied the labile organic carbon contents and their ratios to the total organic carbon (TOC) in 0-60 cm soil layer under effects of understory removal (UR). As compared with no under...

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Bibliographic Details
Published inYing yong sheng tai xue bao Vol. 24; no. 12; p. 3341
Main Authors Wu, Ya-Cong, Li, Zheng-Cai, Cheng, Cai-Fang, Liu, Rong-Jie, Wang, Bin, Geri, Le-Tu
Format Journal Article
LanguageChinese
Published China 01.12.2013
Subjects
Carbon - analysis
Carbon Cycle
Cinnamomum camphora
Soil - chemistry
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Summary:Taking a 48-year-old Cinnamomum camphora plantation in the eastern area of our subtropics as test object, this paper studied the labile organic carbon contents and their ratios to the total organic carbon (TOC) in 0-60 cm soil layer under effects of understory removal (UR). As compared with no understory removal (CK), the soil TOC and easily-oxidized carbon (EOC) contents under UR decreased, with a decrement of 4.8% - 34.1% and 27.1% - 36.2%, respectively, and the TOC and EOC contents had a significant difference in 0-10 cm and 0-20 cm layers, respectively. The water-soluble organic carbon (WSOC) (except in 0-10 cm and 10-20 cm layers) and light fraction organic matter (LFOM) under UR increaesd, but the difference was not significant. The ratio of soil WSOC to soil TOC in UR stand was higher than that in CK stand, while the ratio of soil EOC to soil TOC showed an opposite trend. In the two stands, soil WSOC, EOC, and LFOM had significant or extremely significant correlations with soil TOC, and the correlation
ISSN:1001-9332