| 基于多时相GF-1和Landsat影像的连云港市44年海岸线遥感监测与演变分析 |
| Remote Sensing Monitoring and Evolution Analysis of the Coastline in Lianyungang City Based on Multi-temporal GF-1 and Landsat Images during 44 Years |
| |
| DOI： |
| 中文关键词: 连云港市 海岸线 遥感监测 演变特征 |
| 英文关键词:Lianyungang City, Coastline, Remote Sensing, Evolution Characteristics |
| 基金项目: |
|
| 摘要点击次数: 1612 |
| 全文下载次数: 1299 |
| 中文摘要: |
| 海岸线的动态变化监测可为海岸带防护、海岸带资源开发、利用和可持续发展过程中的决策支持提供理论支撑。本文基于1973-2017年覆盖连云港市的Landsat系列和GF系列卫星影像数据，结合海岸线分类体系，提取了连云港市10期海岸线信息，并分析了海岸线演变特征及其成因。结果表明：1）2017年连云港市海岸线总长度为205.90km，主要岸线类型为建设围堤和港口岸线，两类岸线总长为120.52km，占总岸线长度的58.53%；2）1973-2017年连云港市海岸线长度整体呈现增长态势，44年间海岸线长度共增长了57.17km，年增长率约为1.3km/a。连云港市海岸线主要增长的岸线类型为建设围堤、港口岸线和生物岸线；3）44年间，连云港市海岸变化主要的海岸线类型为粉砂淤泥质岸线、生物岸线、港口岸线、建设围堤和盐田围堤；4）2017年连云港市自然岸线长度为69.15km，占总岸线长度的33.6%，44年间，自然岸线长度减少了28.8km，年减少率为0.65km/a。自然岸线减少的原因主要为养殖业发展、城市扩张建设和港口建设。 |
| 英文摘要: |
| Dynamic monitoring of coastline can provide theoretical support for coastal belt protection, coastal resource development, utilization, and decision support in sustainable development. Based on the Landsat and GF-1 series satellite images covering Lianyungang City from 1973 to 2017, the paper extracts the coastline information by coastline classification system, and analyzes the evolution characteristics of the coastline and its causes. The results show: 1) In 2017, the total length of the coastline in Lianyungang City was 205.90km. The main types of coastlines were construction dikes and port coastline. The total length of the two types of coastline was 120.52km, accounting for 58.53% of the total coastline length. 2) From 1973 to 2017, the length of the coastline of Lianyungang City showed an overall growth trend. During the 44 years, the length of the coastline increased by 57.17km, with an annual growth rate of about 1.3km/a. 3) The main types of the coastline changes in Lianyungang City were silty silt coastline, biological coastline, port coastline, construction dike and Yantian dike during the 44 years. 4) In 2017, the length of the natural coastline of Lianyungang City was 69.15km, accounting for 33.6% of the total coastline length. During the 44 years, the length of the natural coastline decreased by 28.8km, and the annual reduction rate was 0.65km/a. The main reasons for the reduction of natural coastlines are the development of aquaculture, urban expansion and port construction. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
