干旱区生态环境知识资源中心(Arid): Contribution of Climate Change and Grazing on Carbon Dynamics in Central Asian Pasturelands

Arid

DOI	10.3390/rs14051210
	Contribution of Climate Change and Grazing on Carbon Dynamics in Central Asian Pasturelands
	Li, Chaofan; Han, Qifei; Xu, Wenqiang
通讯作者	Han, QF
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2022
卷号	14 期号:5
英文摘要	Reducing the uncertainties in carbon balance assessment is essential for better pastureland management in arid areas. Climate forcing data are some of the major uncertainty sources. In this study, a modified Biome-BGC grazing model was driven by an ensemble of reanalysis data of the Climate Forecast System Reanalysis data (CFSR), the European Centre for Medium-Range Weather Forecasts Interim Reanalysis (ERA-Interim), and the Modern-Era Retrospective Analysis for Research and Applications (MERRA), to study the effect of climate change and grazing on the net ecosystem exchange (NEE) of the pasturelands in Central Asia. Afterwards, we evaluated the performance of corresponding climate datasets over four major pastureland types, and quantified the modeling uncertainty induced by climate forcing data. Our results suggest that (1) a significant positive trend in temperature and a negative trend in precipitation were obtained from the three climate datasets. The average precipitation is apparently higher in the CFSR and MERRA data, showing the highest temperature value among the data sets; (2) pasturelands in Central Asia released 2.10 +/- 1.60 Pg C in the past 36 years. The highest values were obtained with the CFSR (-1.53 Pg C) and the lowest with the MERRA (-2.35 Pg C) data set; (3) without grazing effects, pasturelands in Central Asia assimilated 0.13 +/- 0.06 Pg C from 1981-2014. Grazing activities dominated carbon release (100%), whereas climate changes dominated carbon assimilation (offset 6.22% of all the carbon release). This study offered possible implications to the policy makers and local herdsmen of sustainable management of pastureland and the adaptation of climate change in Central Asia.
英文关键词	carbon dynamics Central Asia reanalysis data pasturelands Biome-BGC model
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000768915000001
WOS关键词	PRECIPITATION PULSES ; SOIL CARBON ; GRASSLAND ; SEQUESTRATION ; REANALYSIS ; ASSIMILATION ; DEGRADATION ; RUSSIA ; FLUXES ; ERA
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394119
推荐引用方式 GB/T 7714	Li, Chaofan,Han, Qifei,Xu, Wenqiang. Contribution of Climate Change and Grazing on Carbon Dynamics in Central Asian Pasturelands[J],2022,14(5).
APA	Li, Chaofan,Han, Qifei,&Xu, Wenqiang.(2022).Contribution of Climate Change and Grazing on Carbon Dynamics in Central Asian Pasturelands.REMOTE SENSING,14(5).
MLA	Li, Chaofan,et al."Contribution of Climate Change and Grazing on Carbon Dynamics in Central Asian Pasturelands".REMOTE SENSING 14.5(2022).