干旱区生态环境知识资源中心(Arid): Impacts and uncertainties of climate/CO2 change on net primary productivity in Xinjiang, China (2000-2014): A modelling approach

Arid

DOI	10.1016/j.ecolmodel.2019.108742
	Impacts and uncertainties of climate/CO2 change on net primary productivity in Xinjiang, China (2000-2014): A modelling approach
	Fang, Xia 1,2,3; Chen, Zhi 4; Guo, Xulin 5; Zhu, Shihua 6; Liu, Tong 7; Li, Chaofan 8; He, Biao 1
通讯作者	Chen, Zhi
来源期刊	ECOLOGICAL MODELLING
ISSN	0304-3800
EISSN	1872-7026
出版年	2019
卷号	408
英文摘要	Dryland in Xinjiang, China has been threatened in recent decades by rapid climate change. However, due to large uncertainties in spatial climate datasets, the impacts of climate change and rising CO2 on net primary productivity (NPP) in Xinjiang have remained unclear. These uncertainties in climate will inevitably lead to uncertainties in model estimated NPP in Xinjiang. The uncertainties can be assessed by running an Arid Ecosystem Model (AEM) using multiple climate datasets. Such an approach allows to disentangle the relative contributions of individual climate factors on NPP change using numerical simulations and factorial analysis. The average annual NPP for Xinjiang from 2000 to 2014 was 155.90 +/- 2.74 g.C/(m(2).year), 189.99 +/- 1.80 g.C/(m(2).year), 213.04 +/- 8.93 g.C/(m(2).year) by using the MERRA, ERA-Interim and CFSR datasets respectively to drive AEM. Our multiple simulations show a consistent temporal pattern of the regional NPP during 2000-2014 that increased during 2008-2011, and decreased during 2005-2006 and 2013-2014. However, we found large uncertainties in the spatial pattern of NPP change during this time, particularly in the Taklimakan Desert and northern Xinjiang (except for the Tacheng where NPP increased). All simulations indicated that areas surrounding the Taklamakan Desert and ecosystems at high latitude ( > 47 degrees) and northwestern Xinjiang were dominated by precipitation change. However, there are large uncertainties in the dominant climate driver in other areas. To assess uncertainties in ecosystem NPP assessment, efforts should be made to improve the confidence in climate data in the northern Xinjiang. This can be achieved by establishing more rain gauges.
英文关键词	Multiple datasets Arid Ecosystem Model (AEM) Net Primary Productivity (NPP) Climate dominating factors
类型	Article
语种	英语
国家	Peoples R China ; Canada
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000480664800002
WOS关键词	CARBON DYNAMICS ; DRYLAND ECOSYSTEMS ; CENTRAL-ASIA ; CO2 ; PRECIPITATION ; URBANIZATION ; RESPONSES ; REANALYSIS
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
来源机构	南京大学 ; 南京信息工程大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215226
作者单位	1.Xinjiang Inst Engn, Urumqi 830091, Xinjiang, Peoples R China; 2.Linyi Univ, Coll Resources & Environm, Shandong Prov Key Lab Water & Soil Conservat & En, Linyi 276000, Shandong, Peoples R China; 3.Chinese Acad Sci, Res Ctr Ecol & Environm Cent Asia, Urumqi 830011, Peoples R China; 4.Hubei Univ Sci & Technol, Sch Resources Environm Sci & Engn, Xianning 437100, Peoples R China; 5.Univ Saskatchewan, Dept Geog & Planning, Kirk Hall,117 Sci Pl, Saskatoon, SK S7N 5C8, Canada; 6.Nanjing Univ, Int Inst Earth Syst Sci, Nanjing 210093, Jiangsu, Peoples R China; 7.Shihezi Univ, Coll Life Sci, Shihezi 832000, Peoples R China; 8.Nanjing Univ Informat Sci & Technol, Sch Geog & Remote Sensing, Nanjing 210008, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Fang, Xia,Chen, Zhi,Guo, Xulin,et al. Impacts and uncertainties of climate/CO2 change on net primary productivity in Xinjiang, China (2000-2014): A modelling approach[J]. 南京大学, 南京信息工程大学,2019,408.
APA	Fang, Xia.,Chen, Zhi.,Guo, Xulin.,Zhu, Shihua.,Liu, Tong.,...&He, Biao.(2019).Impacts and uncertainties of climate/CO2 change on net primary productivity in Xinjiang, China (2000-2014): A modelling approach.ECOLOGICAL MODELLING,408.
MLA	Fang, Xia,et al."Impacts and uncertainties of climate/CO2 change on net primary productivity in Xinjiang, China (2000-2014): A modelling approach".ECOLOGICAL MODELLING 408(2019).