A new index for mapping lichen-dominated biological soil crusts in desert areas
Chen; Jin1; 4; Ming; Yuan Zhang2; Wang; Le3; Shimazaki; Hiroto1; Tamura; Masayuki1
2005
Source PublicationRemote Sensing of Environment
ISSN0034-4257
Volume96Issue:2Pages:165-175
AbstractTracking the presence, distribution and disappearance of biological soil crusts is important for ecosystem management of desert regions and provides highly valuable information on desertification and climate change studies in arid environments. Based on the analysis of the spectral features of biological soil crusts, we propose a new biological soil crust index (BSCI) for biological soil crusts mapping. Using both a radiative transfer simulation and an analysis of a Landsat Enhanced Thematic Mapper Plus (ETM+) image, we examined the ability of satellite remote sensing to detect and map biological soil crusts. Our simulation indicated that Landsat ETM+ data could be used, after atmospheric correction, to detect biological soil crusts if 33% or more of any pixel was accounted for by biological soil crusts. When the proposed BSCI was applied to the detection of biological soil crusts in the Gurbantonggut Desert, Xingjiang, China, a Kappa coefficient of 0.82 and an overall accuracy of 94.7% were achieved. These experimental results indicate that the new index is applicable to identification of lichen-dominated biological soil crusts, and therefore has good potential for biological soil crust detection and mapping in cool and cold deserts. © 2005 Elsevier Inc. All rights reserved. (37 refs.)
Department1 Key Laboratory of Environmental Change and Natural Disaster, Beijing Normal University, China2 Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, China3 Texas Center for Geographic Information Science, United States4 Key Laboratory of Environmental Change and Natural Disaster, College of Resources Science and Technology, Beijing Normal University, Beijing 100875, China
KeywordArid Environments - Atmospheric Correction - Desertification - Soil Crusts
Subject Area自然地理学
Indexed ByEI
Document Type期刊论文
Identifierhttp://ir.xjlas.org/handle/365004/10690
Collection中国科学院新疆生态与地理研究所(2010年以前数据)
Recommended Citation
GB/T 7714
Chen,Jin1,4,et al. A new index for mapping lichen-dominated biological soil crusts in desert areas[J]. Remote Sensing of Environment,2005,96(2):165-175.
APA Chen.,Jin1.,4.,Ming.,Yuan Zhang2.,...&Masayuki1.(2005).A new index for mapping lichen-dominated biological soil crusts in desert areas.Remote Sensing of Environment,96(2),165-175.
MLA Chen,et al."A new index for mapping lichen-dominated biological soil crusts in desert areas".Remote Sensing of Environment 96.2(2005):165-175.
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