气候变化领域集成服务门户(CCPortal): Loss of soil organic carbon following natural forest conversion to Chinese fir plantation

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DOI	10.1016/j.foreco.2019.117476
	Loss of soil organic carbon following natural forest conversion to Chinese fir plantation
	Yang Z.; Chen S.; Liu X.; Xiong D.; Xu C.; Arthur M.A.; McCulley R.L.; Shi S.; Yang Y.
发表日期	2019
ISSN	0378-1127
卷号	449
英文摘要	China manages the largest area of forest plantations on the globe, with most of them converted from natural forests. Establishment and management of forest plantations often involves severe human disturbances such as slash burning and intense site preparation which could lead to rapid and substantial soil organic carbon (SOC) losses and affect long-term SOC recovery. In this study we examined SOC dynamics and soil microbial respiration following the conversion of natural secondary forest to a Chinese fir plantation with slash burning in southern China. SOC decreased by 28% in the first year after forest conversion, with more than 40% of the decrease due to volatilization from slash burning. Slash burning also increased soil microbial respiration in the first five months following forest conversion. SOC of the Chinese fir plantation did not recover to the pre-burning level in 40-years, indicating that the loss of SOC is a long-term phenomenon in forest conversion. We found that soil microbial respiration was largely controlled by photosynthesis in the natural secondary forest; however, both newly formed photosynthates and SOC were important C sources for soil microorganisms in the young Chinese fir plantation. The intensive burning of harvest residue not only induced direct SOC losses through volatilization, but may also have accelerated the decomposition of SOC in the first few years after forest conversion. We conclude that slash burning is the primary, initial pathway by which SOC is lost in these subtropical forest plantations, and that the recovery of SOC in this subtropical forest system will likely be a slow process, requiring centuries or more. Replacing natural forest with Chinese fir plantations using slash burning is likely to substantially deplete C stored in the soil for many years and may negatively affect long-term SOC sequestration potential. © 2019
英文关键词	Chinese fir plantation; Forest conversion; Slash burning; Soil microbial respiration; Soil organic carbon; Soil organic carbon recovery
语种	英语
scopus关键词	Organic carbon; Recovery; Soils; Tropics; Chinese fir; Forest conversion; Slash burning; Soil microbial respiration; Soil organic carbon; Forestry; anthropogenic effect; coniferous forest; coniferous tree; disturbance; forest ecosystem; forest management; microbial activity; organic carbon; plantation forestry; respiration; secondary forest; shifting cultivation; soil carbon; soil microorganism; Chinese; Combustion; Conversion; Forestry; Recovery; Slash; Soil; Tropics; China; Cunninghamia lanceolata
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155829
作者单位	College of Geographical Science, Fujian Normal University, Fuzhou, China; State Key Laboratory of Subtropical Mountain Ecology (Funded by Ministry of Science and Technology and Fujian Province), Fujian Normal University, Fuzhou, China; Institute of Geography, Fujian Normal University, Fuzhou, China; Department of Forestry and Natural Resources, University of Kentucky, Lexington, KY, United States; Department of Plant and Soil Sciences, University of KentuckyKY, United States; College of Mathematics and Statistics, Hainan Normal University, Haikao, China
推荐引用方式 GB/T 7714	Yang Z.,Chen S.,Liu X.,et al. Loss of soil organic carbon following natural forest conversion to Chinese fir plantation[J],2019,449.
APA	Yang Z..,Chen S..,Liu X..,Xiong D..,Xu C..,...&Yang Y..(2019).Loss of soil organic carbon following natural forest conversion to Chinese fir plantation.Forest Ecology and Management,449.
MLA	Yang Z.,et al."Loss of soil organic carbon following natural forest conversion to Chinese fir plantation".Forest Ecology and Management 449(2019).