Spatial, temporal, and spectral variations in albedo due to vegetation changes in China's grasslands

doi:10.1016/j.isprsjprs.2019.03.020

	Spatial, temporal, and spectral variations in albedo due to vegetation changes in China's grasslands
	Zheng, Lei 1,2; Zhao, Guosong 1; Dong, Jinwei 1,2; Ge, Quansheng 1; Tao, Jian 3; Zhang, Xuezhen 1; Qi, Youcun 4; Doughty, Russell B.5,6; Xiao, Xiangming 5,6,7
刊名	ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING
	2019-06-01
卷号	152 页码:1-12
关键词	Albedo Greenness Grassland Climate change China
ISSN号	0924-2716
DOI	10.1016/j.isprsjprs.2019.03.020
通讯作者	Dong, Jinwei(dongjw@igsnrr.ac.cn)
英文摘要	Changes in Earth's albedo due to vegetation dynamics, snow cover, and land cover change have attracted much attention. However, the effects of vegetation dynamics on albedo have not been comprehensively documented according to its spatial (regional), temporal (within growing season), and spectral (visible, near-infrared, and shortwave) characteristics. This study examined the effects of vegetation greenness on albedo from 2000 to 2014 in China's grasslands, which have considerable intra- and inter-annual variations, using remote sensing-based albedo and two-band Enhanced Vegetation Index (EVI2) data. Generally, we found an insignificant negative correlation between the shortwave (SW) albedo and EVI2 for grasslands in China. However, the visible (VIS) albedo was more sensitive to changes in vegetation greenness than near-infrared (NIR) albedo in China's grasslands. The relationship between the NIR albedo and EVI2 was more complicated, especially in the Tibetan Plateau (TP), where the correlation was negative in the early growing season and positive in the late growing season; while the correlation between the NIR albedo and EVI2 was always negative in main part of Inner Mongolia (IM). The different albedo-EVI2 relationships in IM and TP may be related to differences in soil albedos. The higher sensitivity of the SW albedo to vegetation greenness change in IM, the stronger effect on land surface radiation budget. Our finding about vegetation-induced changes in albedo differ in space, time and spectral bands is expected to contribute to the improvement of land surface models.
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences (CAS)[XDA19040301] ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences (CAS)[QYZDB-SSW-DQC005] ; National Natural Science Foundation of China[41701501] ; National Natural Science Foundation of China[41501054] ; Thousand Youth Talents Plan
WOS关键词	BOREAL FOREST ALBEDO ; LAND-SURFACE ALBEDO ; TIBETAN PLATEAU ; CLIMATE-CHANGE ; ECOLOGICAL RESTORATION ; SOIL-MOISTURE ; SNOW COVER ; RESPONSES ; GROWTH ; WATER
WOS研究方向	Physical Geography ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000469158200001
资助机构	Strategic Priority Research Program of Chinese Academy of Sciences (CAS) ; Key Research Program of Frontier Sciences of Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; Thousand Youth Talents Plan
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/59143]
专题	中国科学院地理科学与资源研究所
通讯作者	Dong, Jinwei
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Shandong Technol & Business Univ, Coll Publ Adm, Yantai 264005, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 5.Univ Oklahoma, Dept Microbiol & Plant Biol, Norman, OK 73019 USA 6.Univ Oklahoma, Ctr Spatial Anal, Norman, OK 73019 USA 7.Fudan Univ, Inst Biodivers Sci, Key Lab Biodivers Sci & Ecol Engn, Minist Educ, Shanghai 200438, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Lei,Zhao, Guosong,Dong, Jinwei,et al. Spatial, temporal, and spectral variations in albedo due to vegetation changes in China's grasslands[J]. ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING,2019,152:1-12.
APA	Zheng, Lei.,Zhao, Guosong.,Dong, Jinwei.,Ge, Quansheng.,Tao, Jian.,...&Xiao, Xiangming.(2019).Spatial, temporal, and spectral variations in albedo due to vegetation changes in China's grasslands.ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING,152,1-12.
MLA	Zheng, Lei,et al."Spatial, temporal, and spectral variations in albedo due to vegetation changes in China's grasslands".ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING 152(2019):1-12.