摘要
通过遥感(RS)结合地理信息系统(GIS)的方法,解译舟山石化基地工程所在区域7个时期卫星遥感影像。结合收集相关资料和登岛实地调查,提取并分析了舟山石化基地建设不同时期岸线变迁和植被分布变化情况。研究结果表明:近3 a内,舟山石化基地工程所涉及岛群自然岸线减少21.335 km,占原自然岸线的75.4%;岛群植被减少3.537 km^2,占原岛群植被面积的74.0%。岛群变化大体划分为大鱼山主岛开发、大小鱼山连岛过程、岛群整体围填和岛群向东扩张围填四个阶段。前三阶段岛群自然岸线快速减少,人工岸线快速增加,第四阶段自然岸线缓慢减少,人工岸线长度冲高回落;岛群植被在前两阶段快速减少,后两阶段减少较慢;上述特征主要与工程施工过程有关。由于工程开发严重影响了岛群原有生态环境,建议海岛管理部门在岛群开发中应做好生态保护与修复工作。
The study interpreted seven temporal satellite remote sensing images of Zhoushan Petrochemical Base project area, Combined the collection of relevant information and the field survey of landing on the island,extracted and analyzed the changes of coastline and vegetation distribution in different periods of Zhoushan petrochemical base construction through remote sensing(RS) and geographic information system(GIS). The results show that natural shoreline of island group reduced by 21.335 km in Zhoushan Petrochemical Base Project which accounts for 75.4% of the original natural coastline. Vegetation of island group reduced by 3.537 km^2 which accounts for 74.0% of the vegetation area of the original island group in the past three years. The change of island group can be divided into four stages: the development of main island Dayushan, the process of connecting Dayushan island and Xiaoyushan island, the island group enclosed as a whole and enclosure period of island group expansion. In the first three stages, the natural shoreline of island group decreased rapidly, the artificial shoreline increased rapidly. In the fourth stage, the natural shoreline decreased slowly, and the artificial shoreline rushed up and fell back quickly. The vegetation of the island group decreased rapidly in the first two stages and slowly in the latter two stages. The above characteristics are mainly related to the process of the project construction. It is suggested that the island management department should do a good job in ecological protection and restoration in the development of the island group because of the serious influence to the original ecological environment of the island group created by the project development.
作者
徐中昌
徐韧
张正龙
李志恩
XU Zhong-chang;XU Ren;ZHANG Zheng-long;LI Zhi-en(College of Marine Science,Shanghai Ocean University,Shanghai 201306,China;East China Sea Environmental Monitoring Center of State Oceanic Administation,Shanghai 201206,China;Polar Research Institute of China,Shanghai 200236,China)
出处
《海洋环境科学》
CAS
CSCD
北大核心
2020年第4期522-528,共7页
Marine Environmental Science
基金
海洋生态灾害重点实验室“海岛生态综合评价、防控关键技术研究与应用示范”项目
国家海洋局东海分局青年海洋科学基金项目“景观格局下的海岛空间开发遥感监测与评估研究——以大鱼山为例”(201701)。
关键词
岛群
海岛开发
岸线
植被
island group
island development
coastline
vegetation
