摘要
广东拥有全国面积最大的红树林湿地。但近年来经济的快速发展使得该湿地系统发生了很大的变化。利用多时相的遥感图像和专家系统方法对珠江口红树林湿地的时空变化进行了分析。结合雷达遥感图像,对红树林群落分类及生物量估算进行了研究,改善了单独使用光学遥感的不足。获得了试验区红树林的变化趋势、类型分布及生物量等情况,为红树林湿地的生态保护提供了重要信息和新的监测手段。
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.
出处
《地理学报》
EI
CSCD
北大核心
2006年第1期26-34,共9页
Acta Geographica Sinica
基金
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~~
关键词
珠江口
红树林
湿地
雷达遥感
Pearl River Estuary
mangrove
wetlands
radar remote sensing
monitoring
classification