海洋测绘2024，Vol.44Issue(1)：68-72,5.DOI:10.3969/j.issn.1671-3044.2024.01.014
基于多源遥感的1987-2021年广西海岸线变迁分析
Analysis of Guangxi coastline changes from 1987 to 2021 based on multi-source remote sensing
摘要
Abstract
The changes in the coastline directly affect the ecological environment of the coastal zone and are of great significance.This paper studies the rate and cause of the spatiotemporal change of Guangxi coastline from 1987 to 2021.Based on the semi-automatic extraction and the MNDWI threshold segmentation technology and tidal level correction principle,the total length change of Guangxi coastline in the past 35 years is obtained through the multi-scene remote sensing satellite images.The results show that the length of Guangxi coastline has shown a trend of decreasing first and then increasing in the past 35 years,with the proportion of artificial shoreline increasing,the proportion of silt shoreline decreasing,and the length of other biological shoreline,sandy shoreline and bedrock shoreline decreasing in general.Among them,silt deposition,tidal wave erosion and meteorological disasters are the main natural driving forces,while land enclosure,destruction of mangrove forests and construction of seawalls are the main man-made driving forces.关键词
海岸线遥感/时空变化/海岸线变迁/水体指数/潮位校正Key words
remote sensing/spatiotemporal change/coastline change/water index/tidal correction分类
天文与地球科学引用本文复制引用
高二涛,李淑娴,李淑瑾,马晓诗,肖云志..基于多源遥感的1987-2021年广西海岸线变迁分析[J].海洋测绘,2024,44(1):68-72,5.基金项目
国家自然科学基金(21976043 （）
41801071) （）
广西高校中青年教师科研基础能力提升项目(2023KY0265) （2023KY0265）
广西空间信息与测绘重点实验室基金(19-050-11-17). （19-050-11-17）
