摘要
利用RS和GIS技术,提取了1976-2016年间9个时相的芝罘湾海岸线的时空分布信息,从海岸线和海湾形态两个方面出发,分析了在人类开发活动影响下典型陆连岛地区海岸线的时空变化特征及趋势。结果表明:近40 a来,芝罘湾海岸线整体向海推进,海岸线长度整体增加了15.78 km;岸线结构变化显著,自然岸线比例持续减少,人工岸线逐渐占据主导地位;3个分岸段变化不均衡,芝罘湾西岸岸线变化最显著,而南岸变化相对较小;海湾面积逐渐向海萎缩,自1976年以来海湾面积减少了7.93 km^2。海湾形状指数增加了1.08,海湾形状整体趋于复杂化;海湾重心总体上表现为不断背离陆地而趋向海洋的特点,近40 a来海湾重心整体向海偏移了606.25 m。岸线分形维数整体增大,说明岸线趋于复杂化。
The temporal and spatial distribution of the coastlines in the Zhifu Bay from 1976 to 2016 was extracted with remote sensing(RS) and Geographic Information System(GIS). The characteristics and trends of the coastline changes were analyzed for the study area characterized by the typical land-tied island under the influence of human development activities. During the past 40 years, the coastline of the Zhifu Bay had moved to the sea as a whole, with the total length increasing by 15.78 km. The coastline types had also experienced significant changes, with the natural coastline decreasing and the artificial one being gradually dominated. The changes in different parts of the study area are different, with the most(least) significant ones found in the west(south) bank. As a result, the area of the bay shrank by 7.93 km^2 since 1976. The shape of the bay turned to be more complicated, with the bay shape index increasing by 1.08. The gravity center of the bay was characterized by the consistent shifting from land towards the ocean, with a total of 606.25 m during the past 4 decades. The fractal dimension of the coastline increased as a whole, indicating that the coastline tended to be more complicated.
作者
孙贵芹
徐艳东
林蕾
朱金龙
赵景丽
魏潇
SUN Gui-qin;XU Yan-dong;LIN Lei;ZHU Jin-long;ZHAO Jing-li;WEI Xiao(Shandong Provincial Key Laboratory of Restoration for Marine Ecology,Shandong Marine Resource and Environment Research Institute,Yantai 264006,China;Institute of Remote Sensing and Digital Earth,Chinese Academy of Sciences,Beijing 100101,China)
出处
《海洋科学进展》
CAS
CSCD
北大核心
2020年第1期140-152,共13页
Advances in Marine Science
基金
国家海洋局海域管理技术重点实验室基金项目——典型半封闭海湾大规模围填海对水动力和海洋环境变化的影响研究-以烟台芝罘湾为例(201608)
山东省海洋与渔业科技创新计划项目——莱州湾围填海时空格局变化及其管控对策研究(2017HY07)。
关键词
遥感
GIS
岸线变迁
芝罘湾
remote sensing
GIS
coastline changes
the Zhifu Bay
