[Variations of soil labile organic carbon along an altitude gradient in Wuyi Mountain].
By using sequential fumigation-incubation method, this paper determined the soil labile organic carbon (LOC) content under evergreen broadleaf forest, coniferous forest, sub-alpine dwarf forest, and alpine meadow along an altitude gradient in Wuyi Mountain National Nature Reserve in Fujian Province of China, with its relations to soil microbial biomass carbon (MBC), total organic carbon (TOC), total nitrogen (TN), and fine root biomass (FRB) analyzed. The results showed that soil LOC occupied 3.40%-7.46% of soil TOC, and soil MBC occupied 26.87%-80.38% of the LOC. The LOC under different forest stands increased significantly with altitude, and decreased with soil depth. Soil LOC had very significant correlations with soil MBC, TOC, TN and FRB, and its content was obviously higher at higher altitudes than at lower altitudes.
Key Laboratory of Forestry Ecological Engineering of Jiangsu Province, College of Forest Resources and Environmental Science, Nanjing Forestry University, Nanjing 210037, China. xuxia8227@yahoo.com.cn
Xia
X
Xu
Yue-Qin
YQ
Chen
Jia-She
JS
Wang
Yan-Hong
YH
Fang
Wei
W
Quan
Hong-Hua
HH
Ruan
Zi-Kun
ZK
Xu
D000531:Altitude; D002244:Carbon / Q000032:analysis*; D002681:China; D004784:Environmental Monitoring; D009930:Organic Chemicals / Q000032:analysis*; D012987:Soil / Q000032:analysis*; D064028:Tracheophyta / Q000254:growth & development; D014197:Trees / Q000254:growth & development*
D009930:Organic Chemicals; D012987:Soil; D002244:Carbon