中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地理科学与资源研究所
  3. 中国科学院地理科学与资源研究所
Forest Greening Increases Land Surface Albedo During the Main Growing Period Between 2002 and 2019 in China

文献类型：期刊论文

作者Yan, Hao3; Wang, Shaoqiang4,5; Dai, Junhu1,5; Wang, Junbang4; Chen, Jin6; Shugart, Herman H.2
刊名JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
出版日期2021-03-27
卷号126期号:6页码:17
关键词albedo forest greening MODIS vegetation index
ISSN号2169-897X
DOI10.1029/2020JD033582
通讯作者Yan, Hao(yanhaon@hotmail.com)
英文摘要This study is the first to find the unexpected increases in albedo due to forest greening, which has important implications in research of land-surface energy-balance and the forest-climate feedback. We investigated interannual changes of vegetation and albedo for forests and grassland during the main growing period, May to September, between 2002 and 2019 in China using the MODIS-satellite vegetation index and albedo products. These results indicate significant greening (P-MK < 0.01) in all types of forests as well as grasslands in China. However, forests had an increasing trend of shortwave albedo (P-MK < 0.01) for evergreen forests, deciduous broadleaf forests, and mixed forests. Grasslands showed a decreasing albedo trend (P-MK < 0.01) over the same period. Corroborating statistical analyses revealed a positive correlation (P < 0.01) between Moderate Resolution Imaging Spectroradiometer (MODIS) enhanced vegetation index (EVI) and albedo for forests on interannual scales. However, EVI and albedo for grasslands had a negative correlation. Forest greening increased the albedo during the main growing period. This contrasts previous results indicating that albedo decreases as annual forest-cover increases. Developing and analyzing a simple vegetation-coverage-based albedo model showed that increasing forest coverage (i.e., forest greening) had increased area of more brightly leafy canopy and decreased area of darker gaps in the forest canopy. In conjunction, these produced the increased overall albedo observed by satellite. Contrastingly, grassland greening and more precipitation produced decreased albedo. Hence, the greening of forests and grasslands, representing dense and scarce vegetation respectively, has contrasting albedo responses.
资助项目National Key Research and Development Program of China[2017YFC0503803] ; National Natural Science Foundation of China[41571327]
WOS研究方向Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:000634788300006
出版者AMER GEOPHYSICAL UNION
资助机构National Key Research and Development Program of China ; National Natural Science Foundation of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/162022]  
专题中国科学院地理科学与资源研究所
通讯作者Yan, Hao
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China
2.Univ Virginia, Dept Environm Sci, Charlottesville, VA 22903 USA
3.China Meteorol Adm, Natl Meteorol Ctr, Beijing, Peoples R China
4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modelling, Beijing, Peoples R China
5.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
6.Beijing Normal Univ, Coll Remote Sensing Sci & Engn, Fac Geog Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Yan, Hao,Wang, Shaoqiang,Dai, Junhu,et al. Forest Greening Increases Land Surface Albedo During the Main Growing Period Between 2002 and 2019 in China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2021,126(6):17.
APA Yan, Hao,Wang, Shaoqiang,Dai, Junhu,Wang, Junbang,Chen, Jin,&Shugart, Herman H..(2021).Forest Greening Increases Land Surface Albedo During the Main Growing Period Between 2002 and 2019 in China.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,126(6),17.
MLA Yan, Hao,et al."Forest Greening Increases Land Surface Albedo During the Main Growing Period Between 2002 and 2019 in China".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 126.6(2021):17.

入库方式： OAI收割

来源：地理科学与资源研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。