首页|Changes in different land cover areas and NDVI values in northern latitudes from 1982 to 2015

Changes in different land cover areas and NDVI values in northern latitudes from 1982 to 2015

扫码查看
原文链接
  • 国家科技期刊平台
  • NETL
  • NSTL
  • 万方数据
  • 维普
Climate warming leads to vast changes in the land cover types and plant biomass in the northern high-latitude regions.The overall trend is of shrubland and tree lines moving northwards,while changes in different land cover types and vegetation growth in response to climate change are largely unknown.Here,we selected land areas with latitudes higher than 50°N as the study area.We compared the land cover type changes and explored relationships between the normalized difference vegetation index (NDVI) values of different land cover types,air temperature,and precipitation during 1982-2015 based on dynamic grid.The results indicated that forest and shrubland areas increased as a large area of grassland shifted to forest and shrubland.The snow/ice,tundra and grassland largely have decreased from 1982 to 2015.Although approximately 277.3 × 103 km2 of barren land (6.2％ of the total barren land area in 1982) changed to tundra,the tundra area still decreased because some tundra shifted to forest and grassland.The NDVI values of tundra significantly increased,but the shrubland showed a decreasing trend.Temperature in the growing season (June to September) showed the largest positive correlation coefficients with the NDVI values of forest,tundra,grassland,and cropland.However,due to shrubification processes and plant mortality in shrubland areas,the shrubland NDVI showed negative relationship with annual temperature but positively correlated with monthly t.Taken together,although there is large room for improvement of the land cover type data accuracy,our results suggested that the land cover types in high-latitude regions changed significantly,while the NDVI values of the different land cover types showed different responses to climate change.

Air temperatureArcticClimate changePrecipitationNDVI

XUE Shou-Ye、XU Hai-Yan、MU Cui-Cui、WU Tong-Hua、LI Wang-Ping、ZHANG Wen-Xin、Irina STRELETSKAYA、Valery GREBENETS、Sergey SOKRATOV、Alexander KIZYAKOV、WU Xiao-Dong

展开 >

Cryosphere Research Station on the Qinghai-Tibet Plateau,State Key Laboratory of Cryospheric Science,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou,730000,China

School of Environmental and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou,730070,China

Key Laboratory of Western China's Environmental Systems (Ministry of Education),College of Earth and Environmental Sciences,Lanzhou University,Lanzhou,730000,China

Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai),Zhuhai,519000,China

University Cooperation of Polar Research,Beijing,100875,China

Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou),Guangzhou,511458,China

University of Chinese Academy of Sciences,Beijing,10049,China

School of Civil Engineering,Lanzhou University of Technology,Lanzhou,730050,China

Department of Physical Geography and Ecosystem Science,Lund University,Lund,SE-22362,Sweden

Center for Permafrost (CENPERM),Department of Geosciences and Natural Resource Management,University of Copenhagen,Copenhagen,DK-1165,Denmark

Geographical Faculty,Lomonosov Moscow State University,Moscow,119991,Russia

展开 >

2020YFA06085012019YFA0607003419410153206114303241961144021SKLCS-ZZ-2021N AAAA-A16-116032810095-6

2021

气候变化研究进展(英文版)
国家气候中心

气候变化研究进展(英文版)

CSCDSCI
影响因子：0.806
ISSN：1674-9278
年,卷(期)：2021.12(4)
  • 1
  • 1