Arid
DOI10.3390/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
EISSN2072-4292
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).
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