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DOI	10.1016/j.foreco.2020.117988
	Soil organic carbon turnover following forest restoration in south China: Evidence from stable carbon isotopes
	Xiong X.; Zhang H.; Deng Q.; Hui D.; Chu G.; Meng Z.; Zhou G.; Zhang D.
发表日期	2020
ISSN	0378-1127
卷号	462
英文摘要	As over half of the world's tropical forests are reforested or afforested, understanding the resilience of carbon (C) pool in these forests is critical for global C balance. While most previous studies on the reforested lands have focused on C stock recovery, soil C turnover has largely been overlooked. We evaluated soil C turnover rate by calculating the isotopic enrichment factors of α (defined as the slope of the regression between the δ13C difference and ln-transferred C concentrations in mineral soil samples relative to the surface litter) and β (defined as the slope of the regression between δ13C and log-transferred C concentrations) along 0–30 cm soil profiles in a 400-year-old monsoon evergreen broad-leaved forest (MEBF), a 51-year-old mixed-native plantation (NP1), a 31-year-old mixed-native plantation (NP2), a 31-year-old Acacia mangium plantation (AP), a 31-year-old mixed-conifer plantation (CP), and a 31-year-old secondary forest with natural restoration (SF). Results showed that soil C stocks did not differ among the six forests. The estimated α values ranged from 1.0023 to 1.0086 and increased in the order of MEBF = NP1 < NP2 = AP = CP < SF. The estimated β values ranged from −19.70 to −5.22 but showed an opposite trend to α values. Additionally, changes of the α and β values among these forests were mainly regulated by soil water content and bulk density. Our findings demonstrate that forest restoration could enhance soil C stock equivalent to the undisturbed old-growth forests within a few decades, but the rate of soil C turnover in these restored forests were still higher. © 2020 Elsevier B.V.
英文关键词	Reforestation; Soil carbon stock; Soil carbon turnover; Stable carbon isotopes
语种	英语
scopus关键词	Conservation; Isotopes; Organic carbon; Reforestation; Restoration; Soil moisture; Evergreen broad-leaved forests; Isotopic enrichment; Natural restoration; Soil carbon stock; Soil carbon turnover; Soil organic carbon turnovers; Soil water content; Stable carbon isotopes; Soil surveys; broad-leaved forest; carbon balance; carbon sequestration; forest ecosystem; organic carbon; reforestation; restoration ecology; secondary forest; soil carbon; soil profile; soil water; stable isotope; tropical forest; turnover; Carbon; Conservation; Forests; Isotopes; Reforestation; Restoration; Slope; China; Acacia mangium; Coniferophyta
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/155390
作者单位	Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystem, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China; Center for Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Guangzhou, 510650, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, 510301, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 10049, China; Department of Biological Sciences, Tennessee State University, Nashville, TN 37209, United States; School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, 210044, China
推荐引用方式 GB/T 7714	Xiong X.,Zhang H.,Deng Q.,et al. Soil organic carbon turnover following forest restoration in south China: Evidence from stable carbon isotopes[J],2020,462.
APA	Xiong X..,Zhang H..,Deng Q..,Hui D..,Chu G..,...&Zhang D..(2020).Soil organic carbon turnover following forest restoration in south China: Evidence from stable carbon isotopes.Forest Ecology and Management,462.
MLA	Xiong X.,et al."Soil organic carbon turnover following forest restoration in south China: Evidence from stable carbon isotopes".Forest Ecology and Management 462(2020).