摘要
海岸线变迁和海岸带可持续发展是海洋地理学研究的重要课题。盐城市沿海滩涂特征显著、面积广阔、生态价值大,研究海岸线变迁和海岸带可持续发展,实现对其合理利用、科学保护和完善管理具有重要的现实意义。以盐城市1992年、2000年、2008年和2018年LANDSAT遥感影像数据为基础,用ENVI方法分析盐城海岸线的变迁,并对大丰区和东台市2008年和2018年土地利用动态度进行计算分析。研究发现:以射阳河口为界,以北岸线侵蚀后退,侵蚀速度降低,但范围扩大,以南岸线淤积前进,但淤积速度降低;大丰区和东台市2018年的建设用地面积和养殖水域面积都比2008年有所增加,耕地和自然滩涂所占比重降低。岸线向海发展主要受米草扩张、海岸工程建设的影响,近十多年来的岸线变化及形态则主要受海平面上升的影响。岸线变迁导致生物多样性降低、沿岸工程设施受损或废弃。为促进盐城市沿海区域可持续发展,建议转变经济发展模式,积极打造生态文化城市,慎重建设涉海工程项目,大力发展沿海生态旅游业和高附加值的设施海洋渔业。
Coastline change and sustainable development of coastal zone are important subjects of marine geography.Yancheng coastal wetland is characterized by distinct features,vast area,and great ecological value.Therefore,the study on the coastline change and the sustainable development of its coastal zone is of practical significance for the city to realize rational utilization,protection and management.Based on LANDSAT remote sensing image data of Yancheng in 1992,2000,2008 and 2018,the researcher used ENVI method to analyze the changes of Yancheng coastline and compare the land use changes in Dafeng and Dongtai in 2008 and 2018.The results show that taking Sheyang estuary as the dividing line,the erosion progresses along the north shoreline,with lower speed and wider range;and the siltation develops along the south shoreline,with lower speed.The land use changes are similar in Dafeng and Dongtai from 2008 to 2018,with increased area for construction and aquatic production,and decreased area for plantation and wetland.The siltation is mainly due to the growth of spartina anglica hubb and the coastal construction.The changes and shapes of coastline in recent ten years are the result of sea level rise.Shoreline changes lead to a series of consequences,such as the reduction of biodiversity,the damage or abandonment of coastal facilities and so on.In order to promote the sustainable development of Yancheng City,some measures are put forward,such as transforming the economic development model,building an ecological city,careful planning for marine projects,and developing coastal ecotourism and high value-added marine fishing industry.
作者
丁海燕
DING Hai-yan(Institute of Agricultural and Rural Modernization in Northern Jiangsu, Yancheng, Jiangsu, 224007, China)
出处
《盐城师范学院学报（人文社会科学版）》
2021年第4期11-20,共10页
Journal of Yancheng Teachers University（Humanities & Social Sciences Edition)
基金
江苏省科技厅软科学项目“世界遗产地盐城黄海湿地绿色发展创新实践及案例研究”(BR2020024)。
关键词
遥感
海岸线变迁
海岸带
可持续发展
盐城市
remote sensing
coastline changes
coastal zone
sustainable development
Yancheng City
