摘要
应用遥感技术,结合2003年野外实地调查②,利用地理信息系统(G IS)将历史时期海岸线叠加处理,得出珠江三角洲最新岸线演变动态。论文回顾了历史时期珠江三角洲的发育演变,对珠江三角洲自1965至2003年38年间围垦土地增长速率和海岸线变化趋势作了定量分析和测算,认为珠江三角洲海岸演进呈越来越快的趋势,其中伶仃洋、磨刀门、黄茅海为海岸变迁的典型地段。以珠江口地区为重点对河口海岸演变的作用效应、人类活动特点及其引发的海岸环境地质问题、海平面上升对环境的叠加影响等进行了分析,论述了海岸异常变迁背景下,人类工程活动造成湿地破坏、水位壅高、航道淤积、污水滞留等不良环境地质问题。海平面上升造成珠江三角洲大片低地被淹没、风暴潮灾害加剧等,对城市可持续发展的形势影响巨大。
On the base of the open-air field investigation of 2003 by the remote sensing technology and dealing with superposing the historical period coastline by geographical information system,the result showed the newest coastlines changing in the 21th century of Zhujiang River Delta. The quantitative analysis and calculation for speed of growth and coastline radiation tendency from 1965 to 2003 indicated the land on Zhujiang Delta increased especially in Lingdingyang and Modaomen and Huangmaohai areas. We discussed evolution of river mouth coast,human activity characteristic,sea level rise effect on environment and such geological problems. We expounded that under background of coast change, the human project activities resulted in wetlands destruction,the water level increase,boleked channel sewage stagnation and so on. Sea level rise made a great influence on sustainable development of the city for large shred of lowland was flooded and the storm was aggravated in Zhujiang River Delta.
出处
《资源调查与环境》
2005年第4期283-291,共9页
Resources Survey & Environment
关键词
海岸演变
围垦
环境地质
海平面上升
珠江三角洲经济区
coast changes
enclose and cultivate
the environment geology
the sea level rise
the economic zone of Zhujiang Delta
