中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Land cover mapping and data availability in critical terrestrial ecoregions: A global perspective with Landsat thematic mapper and enhanced thematic mapper plus data

文献类型:期刊论文

作者Yu, Le1; Shi, Yichuan1; Gong, Peng1
刊名BIOLOGICAL CONSERVATION
出版日期2015
卷号190页码:2027-2029
关键词Remote sensing Land cover Landsat Data availability
通讯作者Gong, P (reprint author), Tsinghua Univ, Ctr Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing 100084, Peoples R China.
英文摘要Land cover provides objective and multi scale information on the extent and conditions of habitats both currently and retrospectively. Over four decades since the launch of the first land-observation satellite Landsat-1 in 1972, a tremendous number of earth observation images have been acquired and archived. Here we examined land cover mapping in 142 critical terrestrial ecoregions (identified by WWF Global 200) from three aspects: Landsat Thematic Mapper and Enhanced Thematic Mapper Plus (TM/ETM+) data availability, literature and existing global land cover map. We found that: (1) the availability of Landsat TM/ETM+ for historical land-cover change analysis in those ecoregions is poor. Only 17 ecoregions and 38 ecoregions have sufficient number of seasonal images in the Landsat archive for change analysis at 10-year and 5-year intervals, respectively. (2) Only 26 of 142 ecoregions belong to research hotspots of land cover mapping based on a spatialized literature database. (3) From a 30 m global land cover map (which is FROM-GLC, Finer Resolution Observation and Monitoring - Global Land Cover), only 28 ecoregions have greater than 80% map accuracy while 36 ecoregions have poorer than 50% map accuracy. Our finding suggests a significant gap of observation and understanding of these critical ecoregions from space, and an urgent need to meet the requirement of the conservation science community, in order for land cover data to fulfil its potential to timely monitor the loss of biodiversity from space, improve our knowledge of the state of conservation, and inform better decision making. (C) 2015 Elsevier Ltd. All rights reserved.
研究领域[WOS]Biodiversity Conservation ; Ecology ; Environmental Sciences
收录类别SCI
语种英语
WOS记录号WOS:000358972200005
源URL[http://ir.ceode.ac.cn/handle/183411/38380]  
专题遥感与数字地球研究所_SCI/EI期刊论文_期刊论文
作者单位1.[Yu, Le
2.Gong, Peng] Tsinghua Univ, Ctr Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing 100084, Peoples R China
3.[Yu, Le
4.Gong, Peng] Joint Ctr Global Change Studies, Beijing 100875, Peoples R China
5.[Shi, Yichuan] IUCN, CH-1196 Gland, Switzerland
6.[Shi, Yichuan] UNEP WCMC, Cambridge CB3 0DL, England
7.[Gong, Peng] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714
Yu, Le,Shi, Yichuan,Gong, Peng. Land cover mapping and data availability in critical terrestrial ecoregions: A global perspective with Landsat thematic mapper and enhanced thematic mapper plus data[J]. BIOLOGICAL CONSERVATION,2015,190:2027-2029.
APA Yu, Le,Shi, Yichuan,&Gong, Peng.(2015).Land cover mapping and data availability in critical terrestrial ecoregions: A global perspective with Landsat thematic mapper and enhanced thematic mapper plus data.BIOLOGICAL CONSERVATION,190,2027-2029.
MLA Yu, Le,et al."Land cover mapping and data availability in critical terrestrial ecoregions: A global perspective with Landsat thematic mapper and enhanced thematic mapper plus data".BIOLOGICAL CONSERVATION 190(2015):2027-2029.

入库方式: OAI收割

来源:遥感与数字地球研究所

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