文献类型：期刊文献

英文题名：Response of soil labile organic carbon fractions to forest conversions in subtropical China

作者：Xiao, Yihua[1] Tong, Fuchun[2] Liu, Shirong[3] Kuang, Yuanwen[4] Chen, Bufeng[1] Huang, Junbiao[5]

第一作者：肖以华

通信作者：Kuang, YW[1]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Guangdong, Peoples R China;[2]South China Agr Univ, Coll Forestry, Guangzhou 510642, Guangdong, Peoples R China;[3]Chinese Acad Forestry, Key Lab Forest Ecol & Environm, Chinas State Forestry Adm, Inst Forest Ecol Environm & Protect, Beijing 100091, Peoples R China;[4]Chinese Acad Sci, Key Lab Vegetat Restorat & Management Degraded Ec, South China Bot Garden, Guangzhou 510650, Guangdong, Peoples R China;[5]Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Kunming 650223, Yunnan, Peoples R China

年份：2016

卷号：57

期号：4

起止页码：691-699

外文期刊名：TROPICAL ECOLOGY

收录：;Scopus(收录号：2-s2.0-85008881094);WOS:【SCI-EXPANDED(收录号:WOS:000397193000007)】；

基金：This work was jointly supported by the Special Research Program of the Research Institute for Tropical Forestry, CAF (No. RITFYWZX2011-04), the National Natural Science Foundation ( No. 41471443) and the National Key Basic Research Program of China (No. 2013CB956701). We are very grateful for the support from the Pearl River Delta Forest Ecosystem Research Station.

语种：英文

外文关键词：Forest types; labile fractions; seasonal variation; soil organic carbon; subtropical China

摘要：In order to determine the impact of forest conversions on labile organic carbon fractions, soils at depths of 0 - 10, 10 - 30 and 30 - 50 cm were collected from three types of forest: secondary monsoon evergreen broadleaved forest (BF), mixed pine and broadleaved forest (MF) and Masson pine forest (PF) in subtropical China. The light fraction organic carbon (LFOC), particulate organic carbon (POC) and microbial biomass carbon (MBC) in the soils were determined. The results showed that soils, the top soils (at depths of 0 - 10 cm) in particular, in BF had significantly higher LFOC, POC and MBC than those in MF and PF, indicating that forest conversions influenced the labile organic carbon fractions in subtropical China, and this influence mainly occurred in the top soils. The significantly higher ratios of labile organic carbon to soil organic carbon in BF than those in MF and PF confirmed that forest conversions from BF to MF could lead to a considerable reduction in soil labile organic carbon. In all three types of forest, the reduction of soil organic carbon in the rainy season was higher than that in the dry season.