摘要
对珠江口地区4个时期的遥感影像和地理地形资料进行综合分析。研究表明,该区海岸线和红树林湿地的时空分布发生了很大的变化,总体上看,全区海岸线大多处于向海推进状态,但不同岸段呈现不同的特点:深圳岸段和澳门岸段有两个快速推进期,珠海岸段只有一个快速推进期,香港地区(新界和大屿山)海岸线变动不大。红树林湿地总面积趋于减少,截至2006年,除淇澳岛、深圳河口、镇海湾、黄茅海地区还有大片的红树林外,其他地区的红树林已基本消失。
Based on large quantities of remote sensing data and topographic data, this paper studied the evolution of the shoreline in Zhujiang Bay since 1978. The results show that the evolution of the shoreline on the east bank and that on the west bank had different characteristics from 1978 to 2003, and the shoreline has been mainly man - made since 1978. Zhujiang Delta in South China has the largest area of mangrove wetlands in China. However, the mangrove wetlands largely disappeared because of intensified human activities in the study area. from 1978 to 2006. The analysis clearly shows the fluctuations of the areas of mangrove wetlands in the past three decades. Many natural mangrove forests have disappeared because of reclamation projects. Only those in the reserve areas, such as mangrove forests in Qi＇ ao Island, Futian, and Maipo, have been well protected under strict conservation policies.
出处
《国土资源遥感》
CSCD
2010年第B11期178-184,共7页
Remote Sensing for Land & Resources
关键词
珠江口
红树林湿地
海岸线变迁
遥感动态调查
Zhujiang River Estuary
Mangrove wetlands
Shoreline change
Remote sensing dynamic monitoring
