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Spatial, temporal, and spectral variations in albedo due to vegetation changes in China's grasslands
Zheng, Lei1,2; Zhao, Guosong1; Dong, Jinwei1,2; Ge, Quansheng1; Tao, Jian3; Zhang, Xuezhen1; Qi, Youcun4; Doughty, Russell B.5,6; Xiao, Xiangming5,6,7
2019-06-01
Source PublicationISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING
ISSN0924-2716
Volume152Pages:1-12
Corresponding AuthorDong, Jinwei(dongjw@igsnrr.ac.cn)
AbstractChanges 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.
KeywordAlbedo Greenness Grassland Climate change China
DOI10.1016/j.isprsjprs.2019.03.020
WOS KeywordBOREAL FOREST ALBEDO ; LAND-SURFACE ALBEDO ; TIBETAN PLATEAU ; CLIMATE-CHANGE ; ECOLOGICAL RESTORATION ; SOIL-MOISTURE ; SNOW COVER ; RESPONSES ; GROWTH ; WATER
Indexed BySCI
Language英语
Funding ProjectStrategic 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
Funding OrganizationStrategic 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
WOS Research AreaPhysical Geography ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS IDWOS:000469158200001
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/59144
Collection中国科学院地理科学与资源研究所
Corresponding AuthorDong, Jinwei
Affiliation1.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
Recommended Citation
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.
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