文献类型：期刊文献

英文题名：Carbon storage capacity of monoculture and mixed-species plantations in subtropical China

作者：He, Youjun[1] Qin, Lin[2] Li, Zhiyong[1] Liang, Xingyun[2] Shao, Meixiang[2] Tan, Ling[2]

第一作者：何友均

通信作者：Qin, L[1]

机构：[1]Chinese Acad Forestry, Res Inst Forestry Policy & Informat, Beijing 100091, Peoples R China;[2]Guangxi Univ, Coll Forestry, Nanning 530004, Guangxi, Peoples R China

年份：2013

卷号：295

起止页码：193-198

外文期刊名：FOREST ECOLOGY AND MANAGEMENT

收录：;EI(收录号：20131016078623);Scopus(收录号：2-s2.0-84874388594);WOS:【SCI-EXPANDED(收录号:WOS:000318323100021)】；

基金：This research was financially supported by the National Special Research Program for Public-Welfare Forestry Project (200904005), the National Nature Science Foundation of China (31170593), and the project on Introducing Internationally Advanced Forest Science and Technology (2012-4-69). The authors would like to thank Cai Daoxiong, Jia Hongyan, Lu Lihua, Guo Wenfu, Wen Henghui, Ming Angang, and Tang Jixin of the Experimental Center of Tropical Forestry at the Chinese Academy of Forestry for their assistance in the field survey. We also acknowledge the helpful comments and suggestions of two anonymous reviewers.

语种：英文

外文关键词：Monoculture plantation; Mixed-species plantation; Carbon content; Carbon storage; Subtropical China

摘要：Mixed-tree plantations can be a good silvicultural alternative to large-scale monoculture coniferous plantations for climate change mitigation, which is facilitated by the sequestration of atmospheric carbon dioxide. To evaluate the impacts of tree species compositions on the carbon storage capacity of plantation ecosystems, we measured the above and belowground biomass, as well as the carbon content, in three 27-year old forest plantations of monoculture Castanopsis hystrix (CH stand), monoculture Pinus massoniana (PM stand), and mixed C. hystrix and P. massoniana (mixed CH/PM stand) stands. We developed an allometric equation to estimate tree carbon storage. The carbon storage levels of understory, litter, and soil components were also estimated. Results show that biomass is positively correlated with carbon storage. The ecosystem carbon storage of the mixed CH/PM stand (327.03 Mg ha(-1)) was higher than those of the CH (314.59 Mg ha(-1)) and PM (293.60 Mg ha(-1)) stands. The majority of carbon storage was found in the soil pool (84.73%, 63.54%, and 75.80% in the CH, PM and mixed CH/PM stands, respectively). Almost 40% of soil carbon at a depth of 0-60 cm was stored in the upper 20 cm of the soil pool. Except for the vegetation layer, each layer of the CH and mixed CH/PM stands consisted of a higher amount of carbon than did the layers of the PM stand. These findings suggest that mixed CH/PM plantation stands or valuable indigenous CH plantation stands more substantially improve carbon storage in litter, soil, and ecosystems than do monoculture PM plantation stands. The results also imply that developing valuable indigenous tree species is a good silvicultural option for enhancing carbon sequestration and valuable timber cultivation in subtropical China. (C) 2013 Elsevier B.V. All rights reserved.