Winter soil CO2 efflux in two contrasting forest ecosystems on the eastern Tibetan Plateau,China

doi:10.1007/s11676-015-0120-2

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	Winter soil CO2 efflux in two contrasting forest ecosystems on the eastern Tibetan Plateau,China
	Xu, Zhenfeng 1,2; Zhou, Feifei 2; Yin, Huajun 2; Liu, Qing 2
刊名	JOURNAL OF FORESTRY RESEARCH
	2015-09
卷号	26 期号:3 页码:679-686
关键词	Winter soil CO2 efflux Eastern Tibetan Plateau Natural coniferous forest Picea asperata plantation
ISSN号	1007-662X
DOI	10.1007/s11676-015-0120-2
产权排序	2
文献子类	Article
英文摘要	Significant CO2 fluxes from snow-covered soils occur in cold biomes. However, little is known about winter soil respiration on the eastern Tibetan Plateau of China. We therefore measured winter soil CO2 fluxes and estimated annual soil respiration in two contrasting coniferous forest ecosystems (a Picea asperata plantation and a natural forest). Mean winter soil CO2 effluxes were 1.08 A mu mol m(-2) s(-1) in the plantation and 1.16 A mu mol m(-2) s(-1) in the natural forest. These values are higher than most reported winter soil CO2 efflux values for temperate or boreal forest ecosystems. Winter soil respiration rates were similar for our two forest ecosystems but mean soil CO2 efflux over the growing season was higher in the natural forest than in the plantation. The estimated winter and annual soil effluxes for the natural forest were 176.3 and 1070.3 g m(-2), respectively, based on the relationship between soil respiration and soil temperature, which were 17.2 and 9.7 % greater than their counterparts in the plantation. The contributions of winter soil respiration to annual soil efflux were 15.4 % for the plantation and 16.5 % for the natural forest and were statistically similar. Our results indicate that winter soil CO2 efflux from frozen soils in the alpine coniferous forest ecosystems of the eastern Tibetan Plateau was considerable and was an important component of annual soil respiration. Moreover, reforestation (natural coniferous forests were deforested and reforested with P. asperata plantation) may reduce soil respiration by reducing soil carbon substrate availability and input.
学科主题	Plant Sciences
URL标识	查看原文
WOS关键词	LAND-USE ; CONIFEROUS FOREST ; ORGANIC-CARBON ; RESPIRATION ; FLUX ; PLANTATION ; TUNDRA ; N2O ; CH4 ; CONVERSION
WOS研究方向	Forestry
语种	英语
出版者	NORTHEAST FORESTRY UNIV
WOS记录号	WOS:000358612800016
内容类型	期刊论文
源URL	[http://210.75.237.14/handle/351003/29907]
专题	生物多样性与生态系统服务领域_生态研究
作者单位	1.Sichuan Agr Univ, Inst Forest & Ecol, Chengdu 611130, Peoples R China; 2.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China
推荐引用方式 GB/T 7714	Xu, Zhenfeng,Zhou, Feifei,Yin, Huajun,et al. Winter soil CO2 efflux in two contrasting forest ecosystems on the eastern Tibetan Plateau,China[J]. JOURNAL OF FORESTRY RESEARCH,2015,26(3):679-686.
APA	Xu, Zhenfeng,Zhou, Feifei,Yin, Huajun,&Liu, Qing.(2015).Winter soil CO2 efflux in two contrasting forest ecosystems on the eastern Tibetan Plateau,China.JOURNAL OF FORESTRY RESEARCH,26(3),679-686.
MLA	Xu, Zhenfeng,et al."Winter soil CO2 efflux in two contrasting forest ecosystems on the eastern Tibetan Plateau,China".JOURNAL OF FORESTRY RESEARCH 26.3(2015):679-686.