Soil respiration along an altitudinal gradient in a subalpine secondary forest in China

doi:10.3832/ifor0895-007

	Soil respiration along an altitudinal gradient in a subalpine secondary forest in China
	Luo, Shuzheng 1; Liu, Guohua ; Li, Zongshan ; Hu, Chanjuan 2; Gong, Li 1; Wang, Meng 1; Hu, Huifeng 3
	2015
发表期刊	IFOREST-BIOGEOSCIENCES AND FORESTRY
ISSN	1971-7458
卷号	8 页码:526-532
摘要	The subalpine forest ecosystems in the Miyaluo Forest District in western Sichuan (China) could be very sensitive to global climate change, with important consequences for the regional carbon (C) balance. In a birch secondary forest in this area, we measured plots with (Control) and without (No Litter) leaf litter to explore variation in soil respiration and its relationship with environmental factors along an altitudinal gradient, and to quantify the litter contribution to soil respiration. Soil respiration rate decreased with elevation. The average of soil respiration rates along the elevation gradient during the measurement period was 2.83 +/- 0.14 mu mol CO2 m(-2) s(-1) in the Control treatment and 2.35 +/- 0.16 mu mol CO2 m(-2) s(-1) in the No Litter treatment, with an average proportion of litter layer contribution to soil respiration of 17%. A significant linear relationship between soil respiration and soil temperature along the altitudinal gradient was found, while soil respiration was not significantly correlated with soil water content in both treatments. Soil temperature accounted for 94.9% and 95.6% of the total variation in soil respiration in Control and No Litter treatments, respectively. At altitudes of 2910 m, 3135 m, 3300 m and 3492 m a.s.l., soil respiration had a significant exponential relationship with soil temperature (p<0.05), but it was not significantly correlated with soil water content in both treatments (p>0.05). Soil temperature accounted for more than 92% and 81% of the total variation in soil respiration in Control and No Litter treatments, respectively, at all altitudes except at 3135 m a.s.l. Our results suggest that the expected temperature increases by global warming might enhance soil respiration in the birch secondary forest.
关键词	Birch Secondary Forest Soil Respiration Soil Temperature Soil Water Content Litter
学科领域	Forestry
DOI	10.3832/ifor0895-007
收录类别	SCI
语种	英语
WOS关键词	CO2 EFFLUX ; CONIFEROUS FOREST ; CARBON ALLOCATION ; ORGANIC-CARBON ; RESPONSES ; DETERMINANTS ; PLANTATIONS ; VARIABILITY ; ECOSYSTEMS ; LITTER
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000358979600001
出版者	SISEF-SOC ITALIANA SELVICOLTURA ECOL FORESTALE
文献子类	Article
出版地	POTENZA
资助机构	Strategic Priority Research Program of Chinese Academy of Sciences [XDA05060100] ; National Science Foundation of China [41071039, 31000210]
作者邮箱	luoshuzhengyan@163.com
作品OA属性	gold
引用统计	被引频次：5[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/2S10CLM1/25835
专题	中科院植物分子生理学重点实验室
作者单位	1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China 3.Henan Acad Sci, Inst Geog Sci, Zhengzhou 450052, Peoples R China 4.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Luo, Shuzheng,Liu, Guohua,Li, Zongshan,et al. Soil respiration along an altitudinal gradient in a subalpine secondary forest in China[J]. IFOREST-BIOGEOSCIENCES AND FORESTRY,2015,8:526-532.
APA	Luo, Shuzheng.,Liu, Guohua.,Li, Zongshan.,Hu, Chanjuan.,Gong, Li.,...&Hu, Huifeng.(2015).Soil respiration along an altitudinal gradient in a subalpine secondary forest in China.IFOREST-BIOGEOSCIENCES AND FORESTRY,8,526-532.
MLA	Luo, Shuzheng,et al."Soil respiration along an altitudinal gradient in a subalpine secondary forest in China".IFOREST-BIOGEOSCIENCES AND FORESTRY 8(2015):526-532.

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