Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.proenv.2012.01.078 |
Remote sensing of fractional cover of vegetation and exposed bedrock for karst rocky desertification assessment | |
Yue, Y. M.1,2; Wang, K. L.1,2; Zhang, B.3; Jiao, Q. J.; Liu, B.4; Zhang, M. Y.1,2 | |
通讯作者 | Yue, Y. M. |
会议名称 | 18th Biennial ISEM Conference on Ecological Modelling for Global Change and Coupled Human and Natural Systems |
会议日期 | SEP 20-23, 2011 |
会议地点 | Beijing, PEOPLES R CHINA |
英文摘要 | The fractional cover of vegetation (PV) and exposed bedrock are key ecological indicators of the extent and degree of land degradation in karst regions. In this study, we suggested and compared new methodology for direct and objective estimation of key indicators of karst rocky desertification with hyperspectral and multispectral imagery. The results showed that the Hyperion estimated fractional covers of PV had good correlation with the field surveyed fractional covers and the R-2 (coefficient of determination) and RMSE (root mean square error) for PV was 0.91 and 0.05, respectively; while for exposed bedrock was not so good, 0.53 and 0.11, respectively. It demonstrated that hyperspectral imagery was able to directly estimate the key ecological indicators of karst rocky desertification, which was in a heterogeneous landscape. As for the ASTER imagery, the results were not so accurate. It showed that multispectral imagery could not be used to effectively estimate the fractional cover of PV and exposed bedrock. Our study indicates that it could use hyperspectral imagery to directly and effectively estimate the fractional cover of PV and exposed bedrock for karst rocky desertification assessment in a heterogeneous landscape of karst ecosystem. (C) 2011 Published by Elsevier B. V. Selection and/or peer-review under responsibility of School of Environment, Beijing Normal University. |
英文关键词 | fractional cover KRDSI karst rocky desertification Hyperion ASTER |
来源出版物 | 18TH BIENNIAL ISEM CONFERENCE ON ECOLOGICAL MODELLING FOR GLOBAL CHANGE AND COUPLED HUMAN AND NATURAL SYSTEM |
ISSN | 1878-0296 |
出版年 | 2012 |
卷号 | 13 |
页码 | 847-853 |
EISBN | ***************** |
出版者 | ELSEVIER SCIENCE BV |
类型 | Proceedings Paper |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | CPCI-S |
WOS记录号 | WOS:000312386000076 |
WOS关键词 | INDEXES |
WOS类目 | Ecology ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/300498 |
作者单位 | 1.Chinese Acad Sci, Inst Subtrop Agr, Changsha 410125, Hunan, Peoples R China; 2.Chinese Acad Sci, Huangjiang Expt Stat Karst Ecosyst, Huangjiang 547100, Peoples R China; 3.Chinese Acad Sci, Earth Observat Ctr & Digital Earth, Beijing 100094, Peoples R China; 4.Nanjing Inst Environm Sci, State Environm Protect Adm, Nanjing 210042, Peoples R China |
推荐引用方式 GB/T 7714 | Yue, Y. M.,Wang, K. L.,Zhang, B.,et al. Remote sensing of fractional cover of vegetation and exposed bedrock for karst rocky desertification assessment[C]:ELSEVIER SCIENCE BV,2012:847-853. |
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