Temperature and substrate availability regulate soil respiration in the tropical mountain rainforests, Hainan Island, China

doi:10.1093/jpe/rtt034

	Temperature and substrate availability regulate soil respiration in the tropical mountain rainforests, Hainan Island, China
	Zhou, Zhang 1; Jiang, Lai ; Du, Enzai ; Hu, Huifeng 2; Li, Yide 3; Chen, Dexiang 3; Fang, Jingyun
	2013
发表期刊	JOURNAL OF PLANT ECOLOGY
ISSN	1752-9921
卷号	6 期号:5 页码:325-334
摘要	Tropical forest plays a key role in global C cycle; however, there are few studies on the C budget in the tropical rainforests in Asia. This study aims to (i) reveal the seasonal patterns of total soil respiration (R-T), litter respiration (R-L) and soil respiration without surface organic litter (R-NL) in the primary and secondary Asian tropical mountain rainforests and (ii) quantify the effects of soil temperature, soil moisture and substrate availability on soil respiration. The seasonal dynamics of soil CO2 efflux was measured by an automatic chamber system (Li-8100), within the primary and secondary tropical mountain rainforests located at the Jianfengling National Reserve in Hainan Island, China. The litter removal treatment was used to assess the contribution of litter to belowground CO2 production. The annual R-T was higher in the primary forest (16.730.87 Mg C ha(1)) than in the secondary forest (15.100.26 Mg C ha(1)). The rates of R-T, R-NL and R-L were all significantly higher in the hot and wet season (MayOctober) than those in the cool and dry season (NovemberApril). Soil temperature at 5cm depth could explain 5561% of the seasonal variation in R-T, and the temperature sensitivity index (Q(10)) ranked by R-L (Q(10) 3.39) > R-T (2.17) > R-NL (1.76) in the primary forest and by R-L (4.31) > R-T (1.86) > R-NL (1.58) in the secondary forest. The contribution of R-L to R-T was 2223%, while litter input and R-T had 1 month time lag. In addition, the seasonal variation of R-T was mainly determined by soil temperature and substrate availability. Our findings suggested that global warming and increased substrate availability are likely to cause considerable losses of soil C in the tropical forests.
关键词	soil respiration soil temperature litter tropical mountain rainforest
学科领域	Plant Sciences ; Ecology ; Forestry
DOI	10.1093/jpe/rtt034
收录类别	SCI
语种	英语
WOS关键词	GROUND CARBON ALLOCATION ; CO2 EFFLUX ; MICROBIAL BIOMASS ; NITROGEN ADDITION ; PINE PLANTATION ; ORGANIC-CARBON ; ROOT ; SENSITIVITY ; LITTERFALL ; DEPENDENCE
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000324828500002
出版者	OXFORD UNIV PRESS
文献子类	Article
出版地	OXFORD
EISSN	1752-993X
资助机构	National Basic Research Program of China on Global Change(National Basic Research Program of China) ; National Natural Science Foundation of China(National Natural Science Foundation of China (NSFC)) ; Ministry of Science and Technology(Ministry of Science, ICT & Future Planning, Republic of Korea)
作者邮箱	Du, Enzai/AAY-5441-2020
作品OA属性	Bronze
引用统计	被引频次：47[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/28038
专题	植被与环境变化国家重点实验室
作者单位	1.Peking Univ, Coll Urban & Environm Sci, Dept Ecol, Beijing 100871, Peoples R China 2.Peking Univ, Shenzhen Grad Sch, Sch Urban Planning & Design, Shenzhen 518055, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 4.Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Zhang,Jiang, Lai,Du, Enzai,et al. Temperature and substrate availability regulate soil respiration in the tropical mountain rainforests, Hainan Island, China[J]. JOURNAL OF PLANT ECOLOGY,2013,6(5):325-334.
APA	Zhou, Zhang.,Jiang, Lai.,Du, Enzai.,Hu, Huifeng.,Li, Yide.,...&Fang, Jingyun.(2013).Temperature and substrate availability regulate soil respiration in the tropical mountain rainforests, Hainan Island, China.JOURNAL OF PLANT ECOLOGY,6(5),325-334.
MLA	Zhou, Zhang,et al."Temperature and substrate availability regulate soil respiration in the tropical mountain rainforests, Hainan Island, China".JOURNAL OF PLANT ECOLOGY 6.5(2013):325-334.

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