IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Response of biomass spatial pattern of alpine vegetation to climate change in permafrost region of the Qinghai-Tibet Plateau, China
Zhang Yu2; Wang Genxu1; Wang Yibo2
Corresponding AuthorWang, GX
2010
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
Volume7Issue:4Pages:301-314
SubtypeArticle
AbstractAlpine ecosystems in permafrost region are extremely sensitive to climate changes. To determine spatial pattern variations in alpine meadow and alpine steppe biomass dynamics in the permafrost region of the Qinghai-Tibet Plateau, China, calibrated with historical datasets of above-ground biomass production within the permafrost region's two main ecosystems, an ecosystem-biomass model was developed by employing empirical spatialdistribution models of the study region's precipitation, air temperature and soil temperature. This model was then successfully used to simulate the spatio-temporal variations in annual alpine ecosystem biomass production under climate change. For a 0.44A degrees C decade-1 rise in air temperature, the model predicted that the biomasses of alpine meadow and alpine steppe remained roughly the same if annual precipitation increased by 8 mm per decade(-1), but the biomasses were decreased by 2.7% and 2.4%, respectively if precipitation was constant. For a 2.2A degrees C decade(-1) rise in air temperature coupled with a 12 mm decade(-1) rise in precipitation, the model predicted that the biomass of alpine meadow was unchanged or slightly increased, while that of alpine steppe was increased by 5.2%. However, in the absence of any rise in precipitation, the model predicted 6.8% and 4.6% declines in alpine meadow and alpine steppe biomasses, respectively. The response of alpine steppe biomass to the rising air temperatures and precipitation was significantly lesser and greater, respectively than that of alpine meadow biomass. A better understanding of the difference in alpine ecosystem biomass production under climate change is greatly significant with respect to the influence of climate change on the carbon and water cycles in the permafrost regions of the Qinghai-Tibet Plateau.
KeywordPermafrost Change Qinghai-tibetan Plateau Alpine Ecosystem Grassland Biomass Climate Change Response Model
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1007/s11629-010-2011-5
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
WOS KeywordLAND-COVER CHANGES ; WINTER SNOW ; MODEL ; ALASKA ; COMMUNITIES ; DISTURBANCE ; ECOSYSTEMS ; LANDSCAPE ; VARIABLES ; DYNAMICS
Language英语
Quartile4区
TOP
WOS SubjectEnvironmental Sciences
WOS IDWOS:000284074700001
Funding OrganizationNational Basic Research Program (also called 973 Program)(2007CB411504) ; National Natural Science Foundation of China(40925002 ; 40730634)
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5565
Collection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.Lanzhou Univ, Coll Resources & Environm, Lanzhou 730000, Peoples R China
Recommended Citation
GB/T 7714
Zhang Yu,Wang Genxu,Wang Yibo. Response of biomass spatial pattern of alpine vegetation to climate change in permafrost region of the Qinghai-Tibet Plateau, China[J]. JOURNAL OF MOUNTAIN SCIENCE,2010,7(4):301-314.
APA Zhang Yu,Wang Genxu,&Wang Yibo.(2010).Response of biomass spatial pattern of alpine vegetation to climate change in permafrost region of the Qinghai-Tibet Plateau, China.JOURNAL OF MOUNTAIN SCIENCE,7(4),301-314.
MLA Zhang Yu,et al."Response of biomass spatial pattern of alpine vegetation to climate change in permafrost region of the Qinghai-Tibet Plateau, China".JOURNAL OF MOUNTAIN SCIENCE 7.4(2010):301-314.
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