Effect of warming on extracted soil carbon pools of Abies faxoniana forest at two elevations

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地表生过程与生态调控重点实验室

	Effect of warming on extracted soil carbon pools of Abies faxoniana forest at two elevations
	Xu, Gang 1,2; Jiang, Hao2 ; Zhang, Yuanbin2 ; Korpelainen, Helena 3; Li, Chunyang2
刊名	FOREST ECOLOGY AND MANAGEMENT
	2013-12-15
卷号	310 页码:357-365
关键词	Abies faxoniana Elevation Open top chamber warming Labile and recalcitrant soil C Microbial biomass C
ISSN号	0378-1127
通讯作者	Li, Chunyang
英文摘要	Carbon (C) fluxes are mainly controlled by small labile pools, and the C storage is determined by soil recalcitrant chemical compounds, which are directly associated with litter decomposition. Hence, surveys of soil C fractions, litter decomposition and CO2 efflux can be used to predict the impact of future global warming on subalpine forest ecosystems. Elevation-related differences of Abies faxoniana forest soil can be used as a proxy for future changes of C accumulation in soil. A four-year field experiment was conducted in an A. faxoniana forest using an open top chamber method at two elevations. Two-step sulfuric acid hydrolysis was used to quantify labile and recalcitrant C fractions in soil. Soil warming accelerated labile carbon decomposition and increased recalcitrant C pools, but there were altitudinal differences. Soil warming enhanced soil microbial biomass C (MB-C), accelerated litter decomposition and stimulated the release of carbon dioxide. However, the respiration quotients were not significantly affected by soil warming at either elevation. The proportions of the soil C fractions differed significantly between the two elevations. The responses of the high altitude site to soil warming were larger than those of the low altitude site. Our results suggested that decreases in soil labile C fractions and increases in soil respiration probably resulted from slight increases in MB-C under soil warming, which may enhance C loss, especially at a higher elevation where labile C is more abundant. (C) 2013 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Forestry
研究领域[WOS]	Forestry
关键词[WOS]	ORGANIC-MATTER DECOMPOSITION ; TEMPERATURE SENSITIVITY ; CLIMATE-CHANGE ; MICROBIAL COMMUNITIES ; NITROGEN DYNAMICS ; TURNOVER TIMES ; CO2 FLUX ; LATITUDINAL GRADIENT ; LITTER DECOMPOSITION ; ISOTOPIC COMPOSITION
收录类别	SCI
语种	英语
WOS记录号	WOS:000330601000037
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/8308]
专题	成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
作者单位	1.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China 3.Univ Helsinki, Dept Agr Sci, FI-00014 Helsinki, Finland
推荐引用方式 GB/T 7714	Xu, Gang,Jiang, Hao,Zhang, Yuanbin,et al. Effect of warming on extracted soil carbon pools of Abies faxoniana forest at two elevations[J]. FOREST ECOLOGY AND MANAGEMENT,2013,310:357-365.
APA	Xu, Gang,Jiang, Hao,Zhang, Yuanbin,Korpelainen, Helena,&Li, Chunyang.(2013).Effect of warming on extracted soil carbon pools of Abies faxoniana forest at two elevations.FOREST ECOLOGY AND MANAGEMENT,310,357-365.
MLA	Xu, Gang,et al."Effect of warming on extracted soil carbon pools of Abies faxoniana forest at two elevations".FOREST ECOLOGY AND MANAGEMENT 310(2013):357-365.