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

文献类型：期刊论文

作者Xu, Zhenfeng1,2; Zhou, Feifei2; Yin, Huajun2; Liu, Qing2
刊名JOURNAL OF FORESTRY RESEARCH
出版日期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
DOI10.1007/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
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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
WOS记录号WOS:000358612800016
出版者NORTHEAST FORESTRY UNIV
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.

入库方式： OAI收割

来源：成都生物研究所

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