南海周边国家近20年海岸线时空变化分析

发布时间：2018-01-21 01:45

本文关键词： 南海年海岸线遥感时空变化　出处：《海洋通报》2015年05期 　论文类型：期刊论文

【摘要】：利用遥感和GIS技术获取了1990-2010年3期南海周边国家不同类型海岸线的时空分布,对近20年来南海周边国家海岸线时空变化特征进行了分析研究。结论如下:(1)南海周边国家岸线人工化趋势明显,自然的生物岸线(主要是红树林)和基岩岸线消失显著。除中国和新加坡外,总体开发强度尚处于初级阶段;(2)研究区大部分区域岸线受人为开发因素影响显著,空间位置以向海推进为主,平均推进速度为8.09 m/a。而湄公河口、泰国湾以及印度尼西亚西北部等区域由于海水的侵蚀作用,向陆后退趋势明显,平均后退速度为5.96 m/a;(3)研究区各个国家海岸线长度变化不一,反映各国对海岸线的开发强度和阶段不同,其中,新加坡岸线开发强度最高,菲律宾和柬埔寨处于简单的海岸开发阶段;(4)中国、新加坡和文莱对其海岸带的开发主要集中在2000年前,而2000年后海岸开发强度有所减弱,其他国家对海岸带的开发主要集中在2000年后,尤其是越南、泰国、马来西亚、印度尼西亚比较明显,而菲律宾对海岸带的开发强度最弱,说明南海周边国家沿海区域经济发展的不均衡性。
[Abstract]:The temporal and spatial distribution of different types of shorelines in the surrounding countries of the South China Sea from 1990 to 2010 were obtained by using remote sensing and GIS techniques. In this paper, the temporal and spatial variation characteristics of the coastline of the surrounding countries in the South China Sea are analyzed and studied. The conclusion is as follows: 1) the artificial trend of the shoreline in the surrounding countries of the South China Sea is obvious. The natural biological shoreline (mainly mangrove) and bedrock shoreline have disappeared significantly. Except for China and Singapore, the overall development intensity is still in the primary stage. (2) the shoreline in most areas of the study area is significantly affected by the artificial exploitation factors. The spatial position of the shoreline is mainly forward to the sea, with an average propulsion speed of 8.09 m / a and the Mekong Estuary. Due to the erosion of seawater in the Gulf of Thailand and northwestern Indonesia, the trend of land retreat is obvious, and the average retrogression velocity is 5.96 m / a; 3) the length of coastline varies from country to country in the study area, which reflects the different development intensity and stage of each country, among which the development intensity of Singapore coastline is the highest. The Philippines and Cambodia are at a simple stage of coastal development; (4) China, Singapore and Brunei mainly concentrated their coastal zone development before 2000, but the intensity of coastal development weakened after 2000. Other countries mainly focus on the coastal zone development after 2000, especially Vietnam, Thailand, Malaysia, Indonesia is more obvious, while the Philippine coastal zone development intensity is the weakest. It shows that the economic development of the coastal areas of the surrounding countries in the South China Sea is unbalanced.
【作者单位】：兰州交通大学测绘与地理信息学院;中国科学院地理科学与资源研究所资源与环境信息系统国家重点实验室;甘肃省地理国情监测工程实验室;中国南海研究协同创新中心;江苏省地理信息资源开发与利用协同创新中心;
【基金】：863课题(2012AA12A406) 国家自然科学基金(41271409)
【分类号】：P737.1;P748
【正文快照】： 南海是我国能源和产品输运的咽喉,对于开展其周边国家经济合作意义重大。快速、及时、准确地掌握南海周边国家海岸带开发利用情况,有利于理解各国发展差距,有利于寻找发展空间,有利于促成东盟之间及与我国的互补性合作,这对于建设一个和平的南海区域具有重要的意义。近年来,国

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