1975～2015年大连市海岸线变迁和围填海变化

发布时间：2018-11-01 17:05

【摘要】：本文基于Landsat MSS/TM/ETM+/OLI遥感影像,综合运用RS和GIS技术,结合Google Earth,研究了大连市1975~2015年大陆海岸线及围填海面积和类型的变化。结果显示:(1)大连市海岸线的变迁包括向海扩张和向陆退缩两种情况,以向海扩张为主;(2)1975~1990年、1990~2000年和2000~2015年围填海面积分别为187.56 km~2、90.50 km~2和425.42 km~2,年均增长率分别为12.50 km~2/a、9.05 km~2/a和28.36 km~2/a,其中2000~2015年围填海面积最大,1990~2000年围填海面积最小;(3)1975~2015年围填海覆盖类型中工业用地的比例逐渐增高,水库/坑塘的比例逐渐降低,岛屿和交通用地的比例先降低后升高,水田和裸土只出现在1975~1990年;(4)由于围填海等人类活动,1975~2015年共有15个大小不同的岛屿与大陆相连;(5)海岸线向陆退缩的原因是一些养殖池或工业用地被拆除,主要发生在2000~2015年。
[Abstract]:Based on Landsat MSS/TM/ETM / OLI remote sensing images and using RS and GIS techniques, this paper studies the changes of continental shoreline and reclamation area and types in Dalian from 1975 to 2015 by using RS and GIS techniques. The results show that: (1) the changes of Dalian coastline include sea expansion and land retreat, mainly sea expansion; (2) from 1975 to 1990, the annual average annual growth rates of reclaimed area from 1990 to 2000 and from 2000 to 2015 were 187.56 km~2,90.50 km~2 and 425.42 km~2, respectively, which were 12.50 km~2/a,9.05 km~2/a and 28.36 km~2/a, respectively, in which the reclaimed area was the largest from 2000 to 2015. The reclamation area was the smallest from 1990 to 2000; (3) during 1975-2015, the proportion of industrial land increased gradually, the proportion of reservoir / pit decreased gradually, the proportion of island and traffic land decreased first and then increased, and the proportion of paddy field and bare soil only appeared in 1975-1990; (4) due to human activities such as reclamation, 15 islands of different sizes were connected to the mainland from 1975 to 2015, and (5) the reason for the retreat of the coastline to the land was the removal of some ponds or industrial land, which mainly occurred from 2000 to 2015.
【作者单位】：吉林大学地球科学学院;中国科学院湿地生态与环境重点实验室中国科学院东北地理与农业生态研究所;
【基金】：国家自然科学基金项目“应用遥感信息定量区分气候变化和人类活动对沼泽湿地植被NPP的影响”(41401502);国家自然科学基金项目“基于优化植被指数的草本湿地植被净初级生产力遥感估算”(41371403)
【分类号】：P737.1

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