干旱区生态环境知识资源中心(Arid): Assessing albedo dynamics and its environmental controls of grasslands over the Tibetan Plateau

Arid

DOI	10.1016/j.agrformet.2021.108479
	Assessing albedo dynamics and its environmental controls of grasslands over the Tibetan Plateau
	Zheng, Lei; Qi, Youcun; Qin, Zhangcai; Xu, Xiaofeng; Dong, Jinwei
通讯作者	Qi, YC (corresponding author), Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Datun Rd 11A, Beijing 100101, Peoples R China. ; Qin, ZC (corresponding author), Sun Yat Sen Univ, Sch Atmospher Sci, Key Lab Trop Atmosphere Ocean Syst, Minist Educ, Zhuhai 519000, Peoples R China.
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
ISSN	0168-1923
EISSN	1873-2240
出版年	2021
卷号	307
英文摘要	Land surface albedo, as an essential biophysical factor, plays an essential role in surface energy balance. Identifying environmental drivers of albedo in the Tibetan Plateau (TP) helps to understand the role of the third pole in responding to environmental change and regulating regional climate. Based on remotely sensed data of albedo, Normalized Difference Vegetation Index (NDVI), snow cover, and soil moisture, this study investigated the effects of land cover (i.e., vegetation, snow) and soil on albedo from the perspectives of spatial, temporal, and spectral (visible, near-infrared, and shortwave) changes of albedo. Generally, changes in shortwave (SW) albedo were primarily driven by changes in snow cover during the growing season (from May to September), predominantly in May and June. The NDVI had larger contributions to visible (VIS) albedo change and was identified as the foremost important driver for VIS albedo in July and August. The correlations between the nearinfrared (NIR) albedo and NDVI were positive in the mid- and late growing season in eastern TP. Soil moisture was negatively correlated with albedo throughout the growing season and was identified as the foremost important driver in August. The NIR albedo was more susceptible than the VIS albedo to changes in soil moisture. The correlations between NDVI and albedo varied across different categories of aridity caused by changing correlations between NIR albedo and NDVI along the aridity gradients, and consequently the VIS and NIR albedo counterbalance can further limit the contributions of vegetation greenness on SW albedo in sub-humid and humid region. Our findings are expected to improve understandings of energy budget simulations over TP region in land surface models.
英文关键词	Albedo Aridity NDVI Snow cover Soil moisture Grassland Climate change
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000682515100003
WOS关键词	SNOW COVER ; CLIMATE-CHANGE ; SURFACE-TEMPERATURE ; ALPINE GRASSLAND ; SOIL-MOISTURE ; GRAIN-SIZE ; VEGETATION ; DESERT ; GROWTH ; VARIABILITY
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362350
作者单位	[Zheng, Lei; Qi, Youcun] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Datun Rd 11A, Beijing 100101, Peoples R China; [Zheng, Lei; Qi, Youcun; Dong, Jinwei] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Qin, Zhangcai] Sun Yat Sen Univ, Sch Atmospher Sci, Key Lab Trop Atmosphere Ocean Syst, Minist Educ, Zhuhai 519000, Peoples R China; [Qin, Zhangcai] Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519000, Peoples R China; [Xu, Xiaofeng] China Meteorol Adm, Beijing 100081, Peoples R China; [Dong, Jinwei] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Lei,Qi, Youcun,Qin, Zhangcai,et al. Assessing albedo dynamics and its environmental controls of grasslands over the Tibetan Plateau[J]. 中国科学院地理科学与资源研究所,2021,307.
APA	Zheng, Lei,Qi, Youcun,Qin, Zhangcai,Xu, Xiaofeng,&Dong, Jinwei.(2021).Assessing albedo dynamics and its environmental controls of grasslands over the Tibetan Plateau.AGRICULTURAL AND FOREST METEOROLOGY,307.
MLA	Zheng, Lei,et al."Assessing albedo dynamics and its environmental controls of grasslands over the Tibetan Plateau".AGRICULTURAL AND FOREST METEOROLOGY 307(2021).