热带地理
熱帶地理
열대지리
Tropical Geography
2015年
5期
739-744
,共6页
南沙群岛%岛礁%战略格局%越南%中国
南沙群島%島礁%戰略格跼%越南%中國
남사군도%도초%전략격국%월남%중국
Chinese Nansha Islands%islands and reefs%Pattern of spatial strategic situation%Vietnam%China
以南海海域200 m等深线水深图和南沙群岛海域11幅1﹕250000海图以及1﹕800000海图为基础数据，使用ArcGIS 10.1，采用墨卡托投影，CGCS 2000坐标系对海图进行配准并进行矢量化处理，提取图中水深点、岛礁位置信息、礁坪、礁体位置信息。通过对被越南侵占的南沙群岛29座岛礁的空间分析，认为被占岛礁在空间上存在“一纵一横”的空间分布特征，南沙群岛被占岛礁南子岛、景宏岛、南威岛、六门礁从N 至W构成了4个核心和广雅滩1个次核心的岛礁空间分布战略格局。通过对被占岛礁面积、礁坪面积及礁体面积进行插值处理，叠加分析，按重分类方法将插值结果按数值大小划分为5类，予以揭示被占岛礁的重要程度及未来开发潜力。通过分析越南侵占岛礁的岛屿面积与礁体面积比值，指出鸿庥岛、景宏岛、西礁、中礁、毕生礁、六门礁、柏礁有较大填海造陆潜力的岛礁。
以南海海域200 m等深線水深圖和南沙群島海域11幅1﹕250000海圖以及1﹕800000海圖為基礎數據，使用ArcGIS 10.1，採用墨卡託投影，CGCS 2000坐標繫對海圖進行配準併進行矢量化處理，提取圖中水深點、島礁位置信息、礁坪、礁體位置信息。通過對被越南侵佔的南沙群島29座島礁的空間分析，認為被佔島礁在空間上存在“一縱一橫”的空間分佈特徵，南沙群島被佔島礁南子島、景宏島、南威島、六門礁從N 至W構成瞭4箇覈心和廣雅灘1箇次覈心的島礁空間分佈戰略格跼。通過對被佔島礁麵積、礁坪麵積及礁體麵積進行插值處理，疊加分析，按重分類方法將插值結果按數值大小劃分為5類，予以揭示被佔島礁的重要程度及未來開髮潛力。通過分析越南侵佔島礁的島嶼麵積與礁體麵積比值，指齣鴻庥島、景宏島、西礁、中礁、畢生礁、六門礁、柏礁有較大填海造陸潛力的島礁。
이남해해역200 m등심선수심도화남사군도해역11폭1﹕250000해도이급1﹕800000해도위기출수거，사용ArcGIS 10.1，채용묵잡탁투영，CGCS 2000좌표계대해도진행배준병진행시양화처리，제취도중수심점、도초위치신식、초평、초체위치신식。통과대피월남침점적남사군도29좌도초적공간분석，인위피점도초재공간상존재“일종일횡”적공간분포특정，남사군도피점도초남자도、경굉도、남위도、륙문초종N 지W구성료4개핵심화엄아탄1개차핵심적도초공간분포전략격국。통과대피점도초면적、초평면적급초체면적진행삽치처리，첩가분석，안중분류방법장삽치결과안수치대소화분위5류，여이게시피점도초적중요정도급미래개발잠력。통과분석월남침점도초적도서면적여초체면적비치，지출홍휴도、경굉도、서초、중초、필생초、륙문초、백초유교대전해조륙잠력적도초。
In this paper, an isobath bathygram (200 m interval) of the South China Sea and 11 sea charts (Scale 1﹕250 000, 1﹕800 000) of the Chinese Nansha Islands were vectorized to extract the information of depth, area and locations of the islands and reefs by using Mercator projection and CGCS 2000 coordinates with ArcGIS 10.1. It comes to the conclusion that the islands and reefs invaded by Vietnam in the Chinese Nansha Islands concentrate in two lines (one is Vertical, the other is Horizontal). Nánzǐ Dǎo (The Southwest Cay in Western sea charts), Jǐnghóng Dǎo (Sin Cowe Island), Nánwēi Dǎo (Spratly Island, Storm Island), Lìumén Jiāo (Alison Reef and Prince of Wales Bank) constitute a pattern of four primary cores and one secondary core from north to south. The islands and reefs were classified into 5 types according to their area sizes. Overlaying and reclassificating analysis was made on the acreage of the islands and reefs invaded by Vietnam in Chinese Nansha Islands. It reveals that seven islands and reefs would have more potential for land reclamation. Those are:Hóngxīu Dǎo (Namyit Island), Jǐnghóng Dǎo (Sin Cowe Island), XīJiāo (West Reef), Zhōng Jiāo (Central Reef), Bìshēng Jiāo (Pearson Reef), Lìumén Jīao (Alison Reef and Prince of Wales Bank) and Bó jiāo (Barque Canada Reef).
