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Modeling effects of temperature and precipitation on carbon characteristics and GHGs emissions in Abies fabric forest of subalpine
Lu Xuyang1,2; Cheng Genwei1; Xiao Feipeng1,2; Fan Jihui1
Corresponding AuthorCheng Genwei
2008
Source PublicationJOURNAL OF ENVIRONMENTAL SCIENCES
ISSN1001-0742
EISSN1878-7320
Volume20Issue:3Pages:339-346
SubtypeArticle
Abstract

Abies fabric forest in the eastern slope of Gongga mountain is one type of subalpine dark coniferous forests of southwestern China. It is located on the southeastern edge of the Qinghai-Tibet plateau and is sensitive to climatic changes. A process-oriented biogeochemical model, Forest-DNDC, was applied to simulate the effects of climatic factors, temperature and precipitation changes on carbon characteristics, and greenhouse gases (GHGs) emissions in A. fabric forest. Validation indicated that the Forest-DNDC could be used to predict carbon characteristics and GHGs emissions with reasonable accuracy. The model simulated carbon fluxes, soil carbon dynamics, Soil CO(2), N(2)O, and NO emissions with the changes of temperature and precipitation conditions. The results showed that with variation in the baseline temperature from -2 degrees C to +2 degrees C, the gross primary production (GPP) and soil organic carbon (SOC) increased, and the net primary production (NPP) and net ecosystem production (NEP) decreased because of higher respiration rate. With increasing baseline precipitation the GPP and NPP increased slightly, and the NEP and SOC showed decreasing trend. Soil CO(2) emissions increased with the increase of temperature, and CO(2) emissions changed little with increased baseline precipitation. With increased temperature and decreased baseline temperature, the total annual soil N(2)O emissions increased. With the variation of baseline temperature from -2 degrees C to +2 degrees C, the total annual soil NO emissions increased. The total annual N(2)O and NO emissions showed increasing trends with the increase of precipitation. The biogeochemical simulation of the typical forest indicated that temperature changes strongly affected carbon fluxes, soil carbon dynamics, and soil GHGs emissions. The precipitation was not a principal factor affecting carbon fluxes, soil carbon dynamics, and soil CO(2) emissions, but changes in precipitation could exert strong effect on soil N(2)O and NO emissions.

KeywordCarbon Characteristics Greenhouse Gases (Ghgs) Forest-dndc Abies Fabric Forest
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
WOS KeywordNITROUS-OXIDE EMISSIONS ; PROCESS-ORIENTED MODEL ; PNET-N-DNDC ; RAINFALL EVENTS ; GONGGA MOUNTAIN ; SOURCE STRENGTH ; SOIL DRIVEN ; N2O ; BIOGEOCHEMISTRY ; SEQUESTRATION
Language英语
WOS SubjectEnvironmental Sciences
WOS IDWOS:000254090900014
Accession numberAccession number: 20081211157100
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10540
Collection成都山地所知识仓储(2009年以前)
山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Lu Xuyang,Cheng Genwei,Xiao Feipeng,et al. Modeling effects of temperature and precipitation on carbon characteristics and GHGs emissions in Abies fabric forest of subalpine[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2008,20(3):339-346.
APA Lu Xuyang,Cheng Genwei,Xiao Feipeng,&Fan Jihui.(2008).Modeling effects of temperature and precipitation on carbon characteristics and GHGs emissions in Abies fabric forest of subalpine.JOURNAL OF ENVIRONMENTAL SCIENCES,20(3),339-346.
MLA Lu Xuyang,et al."Modeling effects of temperature and precipitation on carbon characteristics and GHGs emissions in Abies fabric forest of subalpine".JOURNAL OF ENVIRONMENTAL SCIENCES 20.3(2008):339-346.
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