Estimate of productivity in ecosystem of the broad-leaved Korean pine mixed forest in Changbai Mountain

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	Estimate of productivity in ecosystem of the broad-leaved Korean pine mixed forest in Changbai Mountain
	Wang, M; Guan, DX; Wang, YS; Hao, ZQ; Liu, YQ; Wang, M, Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China
刊名	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
	2006
卷号	49 页码:74-88
关键词	Carbon Balance Eddy Covariance Technique Primary Productivity Net Ecosystem Exchange Of Co2 Flux The Broad-leaved Korean Pine Forest
ISSN号	1006-9313
英文摘要	We measured soil, stem and branch respiration of trees and shrubs, foliage photosynthesis and respiration in ecosystem of the needle and broad-leaved Korean pine forest in Changbai Mountain by LI-6400 CO2 analysis system. Measurement of forest microclimate was conducted simultaneously and a model was found for the relationship of soil, stem, leaf and climate factors. CO2 flux of different components in ecosystem of the broad-leaved Korean pine forest was estimated based on vegetation characteristics. The net ecosystem exchange was measured by eddy covariance technique. And we studied the effect of temperature and photosynthetic active radiation on ecosystem CO2 flux. Through analysis we found that the net ecosystem exchange was affected mainly by soil respiration and leaf photosynthesis. Annual net ecosystem exchange ranged from a minimum of about -4.671 mu mol(.)m(-2.)s(-1) to a maximum of 13.80 mu mol(.)m-(2-)s(-1), mean net ecosystem exchange of CO2 flux was -2.0 mu mol(.)m(-2)-s(-1) and 3.9 mu mol(.)m(-2.)s(-1) in winter and summer respectively (mean value during 24 h). Primary productivity of tree, shrub and herbage contributed about 89.7%, 3.5% and 6.8% to the gross primary productivity of the broad-leaved Korean pine forest respectively. Soil respiration contributed about 69.7% CO2 to the broad-leaved Korean pine forest ecosystem, comprising about 15.2% from tree leaves and 15.1 % from branches. The net ecosystem exchange in growing season and non-growing season contributed 56.8% and 43.2% to the annual CO2 efflux respectively. The ratio of autotrophic respiration to gross primary productivity (R-a:GPP) was 0.52 (NPP:GPP=0.48). Annual carbon accumulation underground accounted for 52% of the gross primary productivity, and soil respiration contributed 60% to gross primary productivity. The NPP of the needle and broad-leaved Korean pine forest was 769.3 gC(.)m(-2)-a(-1). The net ecosystem exchange of this forest ecosystem (NEE) was 229.51 gC(.)m(-2.)a(-1). The NEE of this forest ecosystem acquired by eddy covariance technique was lower than chamber estimates by 19.8%.
学科主题	Geosciences, Multidisciplinary
语种	英语
WOS记录号	WOS:000242721500006
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/54799]
专题	沈阳应用生态研究所_沈阳应用生态研究所
通讯作者	Wang, M, Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang, M,Guan, DX,Wang, YS,et al. Estimate of productivity in ecosystem of the broad-leaved Korean pine mixed forest in Changbai Mountain[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2006,49:74-88.
APA	Wang, M,Guan, DX,Wang, YS,Hao, ZQ,Liu, YQ,&Wang, M, Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China.(2006).Estimate of productivity in ecosystem of the broad-leaved Korean pine mixed forest in Changbai Mountain.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,49,74-88.
MLA	Wang, M,et al."Estimate of productivity in ecosystem of the broad-leaved Korean pine mixed forest in Changbai Mountain".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 49(2006):74-88.