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珠江三角洲是我国沿海经济高速发展的地区，但因其地势低平、河网纵横、人口密集、城镇集中，成为我国未来海平面上升影响的主要脆弱区之一。本文利用ＧＬＳ技术和沿海数字高程模型，计算和编绘了在不同海平面上升情景和不同防潮设施情况下，海水可能淹没范围的专题数字图件，并给出了珠江三角洲主要市县的可能淹没面积及脆弱性分析。同时对未来海平面上升对珠江三角洲的影响和主要对策进行了初步探讨。
However, the Pearl River Delta is one of the major vulnerable areas affected by the rising sea level in the future because of its low-lying terrain, vertical and horizontal river networks, densely populated cities and concentrated urban areas. In this paper, GDL technology and coastal digital elevation model are used to calculate and compose the digital maps of possible submergence of seawater under different sea level rising scenarios and different damp-proofing facilities, and the possible submergence of the main cities and counties in the Pearl River Delta Area and Vulnerability Analysis. At the same time, the influence of the sea level rise on the Pearl River Delta in the future and the main countermeasures are also discussed.