干旱区生态环境知识资源中心(Arid): The response of carbon stocks of drylands in Central Asia to changes of CO2 and climate during past 35 years

Arid

DOI	10.1016/j.scitotenv.2019.06.089
	The response of carbon stocks of drylands in Central Asia to changes of CO2 and climate during past 35 years
	Zhu, Shihua 1,2; Li, Chaofan 3; Shao, Hua 4; Ju, Weimin 1,2; Lv, Nana 1
通讯作者	Ju, Weimin
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2019
卷号	687 页码:330-340
英文摘要	Drylands are terrestrial ecosystems sensitive to climate change. There are totally drylands of 5.17 x 10(6) km(2) (above 80% of global total temperate desert area) in Central Asia (CAS), in which significant increases of temperature and changes of precipitation have been detected in recent decades. However, environment-induced changes in terrestrial carbon stocks of these dryland ecosystems have not been well investigated. With the Arid Ecosystem Model (AEM), this study was devoted to analyze spatiotemporal changes of carbon stocks in drylands over CAS during the past 35 years (1980-2014) and to quantify contributions to these changes of various factors, including temperature, precipitation, and atmospheric CO2 concentration. Over the study period, total stocks of vegetation carbon (VEGC), soil organic carbon (SOC), and litter carbon (LTRC) averaged 2.8 +/- 0.05 Pg C, 45.2 +/- 0.01 Pg C, and 0.3 +/- 0.004 Pg C(1Pg = 10(15) g) in CAS, respectively. Meanwhile, total carbon (TOTC) declined by 0.7 Pg C. Climate change caused TOTC to decrease by 1.3 Pg C. In contrast, CO2 enrichment effect caused TOTC to increase by 0.9 Pg C. The effects of different factors on TOTC changes varied spatially. Precipitation was the dominant factor regulating TOTC change in 40.9% of the study area, mainly in the desert sparse shrub region in northwest Kazakhstan and the dryland region of southern Xinjiang of China, in which vegetation growth was mainly limited by water resource. CO2 dominated the change of TOTC in 38.3% of the study area, mainly in the lower altitude regions of Tianshan mountain, in which the hydrothermal condition was relatively suitable for vegetation growth. Ecosystems in southern Xinjiang of China and northwest Kazakhstan are fragile to climate change. (C) 2019 Published by Elsevier B.V.
英文关键词	Central Asia Arid ecosystem model Carbon stock dynamics Dryland Climate change
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000480316300034
WOS关键词	NET PRIMARY PRODUCTIVITY ; GROUNDWATER RESOURCES ; ECOSYSTEM ; DYNAMICS ; MODEL ; WATER ; PHOTOSYNTHESIS ; REDUCTIONS ; PATTERNS ; EXCHANGE
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	中国科学院新疆生态与地理研究所 ; 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/2XILL650/218716
作者单位	1.Nanjing Univ, Int Inst Earth Syst Sci, Nanjing 210093, Jiangsu, Peoples R China; 2.Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing, Jiangsu, Peoples R China; 3.Nanjing Univ Informat Sci & Technol, Sch Geog Sci, Nanjing 210008, Jiangsu, Peoples R China; 4.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Xinjiang, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Shihua,Li, Chaofan,Shao, Hua,et al. The response of carbon stocks of drylands in Central Asia to changes of CO2 and climate during past 35 years[J]. 中国科学院新疆生态与地理研究所, 南京大学, 南京信息工程大学,2019,687:330-340.
APA	Zhu, Shihua,Li, Chaofan,Shao, Hua,Ju, Weimin,&Lv, Nana.(2019).The response of carbon stocks of drylands in Central Asia to changes of CO2 and climate during past 35 years.SCIENCE OF THE TOTAL ENVIRONMENT,687,330-340.
MLA	Zhu, Shihua,et al."The response of carbon stocks of drylands in Central Asia to changes of CO2 and climate during past 35 years".SCIENCE OF THE TOTAL ENVIRONMENT 687(2019):330-340.