2001—2013年辽东湾海岸带空间变化分析

Spatial change analysis of the coastal zone of Liaodong Bay from 2001 to 2013

选用2001年、2006年、2009年和2013年的Landsat5/8遥感数据,利用面向对象的方法和GIS空间分析技术,对辽东湾的海岸线变迁和海岸带土地利用变化情况进行研究。通过定量和定性分析,总结该区域海岸线变迁的速度与土地利用变化幅度。结果表明:12 a来,辽东湾海岸带发生了巨大变化,整体变化趋势是由陆地向海洋方向扩展,海岸线总长度增加了514 km,海岸带总面积增加了404 km2;从土地利用方面来看,港口不断扩建,建筑用地和未利用土地不断增加,绿地、湿地和滩涂大幅减少;这些变化主要是人类经济活动开发导致的。

In this paper, the changes of the study area were studied comprehensively using Landsat5 and Landsat8 images from 2001 to 2013 based on the techniques of object -oriented classification and spatial analysis. The results based on quantitative and qualitative analysis show that great changes of the land use have taken place in coastal zone in the past 12 years, and the total length of the coastline has increased by 514 km, with the total area of the coast increasing by 404 km^2 . The results achieved by the authors further show that large areas of green land, wetlands and tidal flats have changed into port, construction land and unused land due to rapid economic development in the coastal zone.