摘要
海岸线动态监测对于海岸带科学管理和海洋资源合理利用具有重要意义。选用1990年、2000年、2010年和2020年共4期Landsat遥感影像数据,对比并采用了面向对象法提取了胶东半岛北部1990—2020年的海岸线和近岸2 km缓冲区内的海岸带变化,结合海岸线变迁强度的计算方法,利用数字岸线分析系统(digital shoreline analysis system,DSAS)分析了海岸线的变化速率和时空分布特征,通过构建人类活动强度指数(human activity intensity index,HAII)模型对海岸线的变化进行了驱动分析。结果表明:①研究区海岸线整体呈增长趋势,并向海一侧缓慢推进,海岸线长度总体增加了183.13 km,人工岸线增幅最大,砂质自然岸线减幅最大;②海岸线变化速率时空分布不均衡,最大增速出现在胶莱河—界河区段,为94.59 m/a,最大侵蚀速率出现在界河—大沽夹河区段,为-49.01 m/a;③近海人类活动变化是研究区海岸线时空变迁的主要原因,人类活动主要以围填海、港口建设等形式影响着海岸线的长度和类型变化。
Dynamic shoreline monitoring is greatly significant for the scientific management of coastal zones and the rational utilization of marine resources.Based on the Landsat remote sensing images of four periods i.e.,1990,2000,2010,and 2020,this study extracted the changes in the shorelines and the coastal zones within the 2 km of the buffer zone in the north of Jiaodong Peninsula from 1990 to 2020 by making comparison and using an object-oriented method.By combining the calculation method for shoreline change intensity,this study analyzed the changing rate and temporal-spatial distribution characteristics of the shorelines using the digital shoreline analysis system(DSAS).Then,this study conducted a driving analysis of changes in the shoreline by constructing a human activity intensity index(HAII)model.The results are as follows.The shorelines of the study area generally showed an upward trend and advanced slowly to the seaside.The overall length of the shorelines increased by 183.13 km.The highest increased and decreased amplitude occurred in artificial shorelines and sandy natural shorelines,respectively.The shoreline changing rates showed uneven temporal-spatial distribution.The maximum growth rate of 94.59 m/a occurred in the Jiaolai River-Jiehe River section,while the maximum erosion rate of-49.01 m/a occurred in the Jiehe River-Dagujia River section.The changes in offshore human activities were the main contributor to the temporal-spatial changes of coastlines in the study area.The lengths and types of shorelines were mainly affected by human activities through sea reclamation and port construction.
作者
赵连杰
吴孟泉
郑龙啸
栾绍鹏
赵贤峰
薛明月
刘佳燕
刘晨曦
ZHAO Lianjie;WU Mengquan;ZHENG Longxiao;LUAN Shaopeng;ZHAO Xianfeng;XUE Mingyue;LIU Jiayan;LIU Chenxi(School of Resources and Environmental Engineering,Ludong University,Yantai 264039,China;Yantai Geographic Information Center,Yantai 264000,China;Yantai Land Reserve and Use Centre,Yantai 264000,China;School of Earth Sciences,Yangtze University,Wuhan 430100,China)
出处
《自然资源遥感》
CSCD
北大核心
2022年第4期87-96,共10页
Remote Sensing for Natural Resources
基金
国家自然科学基金项目“黄海浒苔衰亡过程与浮游微藻生态响应的遥感监测研究”(编号:42071385)
山东省自然科学基金项目“基于遥感的黄海浒苔与浮游植物竞争关系对营养盐变化的响应研究”(编号:ZR2019MD041)
烟台市科技创新发展计划重点研发类项目‘星-机-地’联合监测海阳浒苔的生态效应关键技术与示范(编号:2022MSGY062)
山东省海上航天装备技术创新中心(鲁东大学)开放课题基金项目“基于‘空天地’一体的浒苔衰亡对黄海海洋生态遥感监测研究”(编号:HHCXZX-2021-12)共同资助。
