珠江口红树林湿地演变的遥感分析
收稿日期: 2005-04-10
修回日期: 2005-08-02
网络出版日期: 2006-01-25
基金资助
广东省自然科学基金项目 (031647); 国家杰出青年基金资助项目(40525002); “985工程”GIS与遥感的地学应用科技创新平台项目
Mangrove Wetland Changes in the Pearl River Estuary Using Remote Sensing
Received date: 2005-04-10
Revised date: 2005-08-02
Online published: 2006-01-25
Supported by
Natural Science Foundation of Guangdong, No. 031647; National Outstanding Youth Foundation of NSF of China, No.40525002; 985 Project of GIS and Remote Sensing for Geosciences from the Ministry of Education of China
黎夏, 刘凯, 王树功 . 珠江口红树林湿地演变的遥感分析[J]. 地理学报, 2006 , 61(1) : 26 -34 . DOI: 10.11821/xb200601003
Guangdong in South China has the largest area of mangrove wetlands in China. Mangrove forests have important ecological functions in protecting the environment. However, the mangrove wetlands have been largely lost because of intensified human activities in the study area. Remote sensing can be conveniently used to inventory mangrove forests because field investigation is very difficult. In this study, a knowledge-based system is developed to retrieve spatio-temporal dynamics of mangrove wetlands using multi-temporal remote sensing data. Radar remote sensing data are also used to provide complementary information for the quantitative analysis of mangrove wetlands. Radar remote sensing is able to penetrate mangrove forests and obtain the trunk information about mangrove structures. The integration of radar remote sensing with optical remote sensing can significantly improve the accuracies of classifying mangrove wetland types and estimating wetland biomass.
Key words: Pearl River Estuary; mangrove; wetlands; radar remote sensing; monitoring; classification
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