| 防城港-钦州的海岸线遥感监测与时空分析 |
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| 作者姓名： | 谢春艳 李峙 张建兵 |
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| 作者单位： | 广西壮族自治区国土测绘院 ,广西 南宁 ,530023;南宁师范大学地理科学与规划学院 ,广西 南宁 ,530001;南宁师范大学地理科学与规划学院 ,广西 南宁 ,530001;北部湾环境演变与资源利用教育部重点实验室 ,广西 南宁 ,530001 |
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| 基金项目： | 广西壮族自治区重点研发计划项目(桂科AB16380247)。 |
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| 摘 要： | 海岸线是海陆动态的分界线。国内外对防城港-钦州海岸线的时空变迁研究甚少。基于Landsat系列卫星遥感数据,利用ENVI(environment visualizing images)、ArcMap平台,采用归一化水体指数半自动提取5期海岸线,定量、定性分析海岸线时空演变。研究发现:(1)1999-2018年海岸线增长了53.59 km;(2)2004-2009年因防城港和钦州港填海造陆海岸线剧增了59.954 km;(3)填海造陆时空变化最为明显,2004-2009年港口的填海面积增加3663 hm2;(4)1999-2004年典型海岸养殖区面积增长7021 hm2,之后面积保持平稳,年平均面积为9626 hm2;(5)在研究尺度下,典型的红树林生物区基本维持不变,年均大约1597 hm2;(6)砂质海岸和基岩海岸移动不明显。近20年间,海岸线的变迁因素主要为滩涂围垦、港口扩建、填海造陆。
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| 关 键 词： | 海岸线 遥感影像 时空分析 归一化水体指数 |
Remote Sensing Monitoring and Spatial-Temporal Analysis of Coastal Lines Between Fangchenggang City and Qinzhou City |
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| Authors: | XIE Chunyan LI Zhi ZHANG Jianbing |
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| Institution: | (Guangxi Institute of land surveying and mapping,Nanning,Guangxi 530023;School of Geography and Planning,Nanning Normal University,Nanning 530001,China;Key Laboratory of Environmental Change and Resources Use in Beibu Gulf,Nanning Normal University,The Ministry of Education,Nanning 530001,China) |
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| Abstract: | The coastline is the dynamic boundary between land and sea.There are few studies on the temporal and spatial changes of the coastline of Fangchenggang—Qinzhou.Based on Landsat series satellite remote sensing data,and ENVI and ArcMap platform,five stages of coastline are semi-automatically extracted by normalized different water index(NDWI),and the temporal and spatial evolution of coastline are analyzed quantitatively and qualitatively.The results show that:(1)From 1999 to 2018,the coastline increased by 53.59 km.(2)From 2004 to 2009,land reclamation in Fangchenggang Port and Qinzhou Port increased by 59.954 km.(3)The temporal and spatial changes of reclamation are the most obvious.The reclamation of the ports increased by 3663 hm2 from 2004 to 2009.(4)From 1999 to 2004,the typical coastal aquaculture areas increased by 7021 hm2.The area remained stable with an average annual area of 9626 hm2 after 2004.(5)At the research scale,the typical mangrove biota remained stable with average area about 1597 hm2 per year.(6)The movement of sandy coast and Bedrock Coast is not obvious.During the past 20 years,the main factors of coastline change are beach reclamation,port expansion and land reclamation. |
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| Keywords: | coastline remote sensing image spatial and temporal analysis NDWI(normalized difference water index) |
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