基于谷歌地球历史影像的大连市海岸线变化分析

为了研究大连市近40年海岸带环境变迁和演化规律, 基于谷歌地球历史影像, 采用GIS技术提取和分析了大连市1984-2018年海岸线变化信息. 结果显示大连市海岸线增长经历了低-高-低3个阶段, 时间节点为2004年和2014年. 围(填)海增速与GDP增速曲线具有较强的相关性. 从空间来看, 大连市海岸线变化主要分布在湾区和河口地区, 主要类型为填海造陆区和围海养殖区. 其中填海造陆区主要集中在市辖区中南部沿岸和长兴岛开发区, 围海养殖区则分散在北部和东部瓦房店、普兰店和庄河等地.

COASTLINE CHANGES OF DALIAN CITY BASED ON GOOGLE EARTH HISTORICAL IMAGES

To study the environmental changes and evolution rule of coastal zones in Dalian City in the last 40 years, the paper uses GIS technology to extract and analyze the coastline information during 1984-2018 based on the historical images from Google Earth. The results show that the coastline has grown in three stages: low-high-low, separated by the years of 2004 and 2014. The growth rate of sea reclamation is highly correlated to the GDP growth curve. Spatially, the coastline changes are mainly distributed in the bay and estuary areas, with the main types of land reclamation and sea mariculture. The land reclamation area is mainly concentrated in the central and southern coast of municipal district and Changxing Island Development Zone, while the sea reclamation area is scattered in Wafangdian, Pulandian and Zhuanghe areas in the north and east.