气候变化领域集成服务门户(CCPortal): Changes in albedo and its radiative forcing of grasslands in East Asia drylands

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DOI	10.1186/s13717-024-00493-w
	Changes in albedo and its radiative forcing of grasslands in East Asia drylands
	Zhu, Qingsong; Chen, Jiquan; Wu, Liangxu; Huang, Yuting; Shao, Changliang; Dong, Gang; Xu, Zhe; Li, Xianglan
发表日期	2024
EISSN	2192-1709
起始页码	13
结束页码	1
卷号	13 期号:1
英文摘要	BackgroundGrasslands in drylands are increasingly influenced by human activities and climate change, leading to alterations in albedo and radiative energy balance among others. Surface biophysical properties and their interactions change greatly following disturbances. However, our understanding of these processes and their climatic impacts remains limited. In this study, we used multi-year observations from satellites and eddy-covariance towers to investigate the response of albedo to variables closely associated with human disturbances, including vegetation greenness (EVI) and surface soil volumetric water content (VWC), as well as snow cover and clearness index (Ta) for their potential relationships.ResultsEVI and VWC during the growing season were the primary factors influencing albedo. EVI and VWC were negatively correlated with albedo, with VWC's total direct and indirect impacts being slightly smaller than those of EVI. During the non-growing season, snow cover was the most influential factor on albedo. VWC and Ta negatively affected albedo throughout the year. We estimated the impact of variations in EVI and VWC on climate to be in the range of 0.004 to 0.113 kg CO2 m-2 yr-1 in CO2 equivalent.ConclusionsThis study indicates the significant impacts of climate change and human disturbances on vulnerable grassland ecosystems from the perspective of altered albedo. Changes in vegetation greenness and soil properties induced by climate change and human activities may have a substantial impact on albedo, which in turn feedback on climate change, indicating that future climate policies should take this factor into consideration.
英文关键词	Albedo; Global warming potential; Grassland; Disturbance
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology ; Environmental Sciences
WOS记录号	WOS:001174058400001
来源期刊	ECOLOGICAL PROCESSES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/308188
作者单位	Beijing Normal University; Michigan State University; Chinese Academy of Agricultural Sciences; Institute of Agricultural Resources & Regional Planning, CAAS; Shanxi University
推荐引用方式 GB/T 7714	Zhu, Qingsong,Chen, Jiquan,Wu, Liangxu,et al. Changes in albedo and its radiative forcing of grasslands in East Asia drylands[J],2024,13(1).
APA	Zhu, Qingsong.,Chen, Jiquan.,Wu, Liangxu.,Huang, Yuting.,Shao, Changliang.,...&Li, Xianglan.(2024).Changes in albedo and its radiative forcing of grasslands in East Asia drylands.ECOLOGICAL PROCESSES,13(1).
MLA	Zhu, Qingsong,et al."Changes in albedo and its radiative forcing of grasslands in East Asia drylands".ECOLOGICAL PROCESSES 13.1(2024).