南极洲地表覆盖图(1:900万)

国家863计划（No.2008AA09Z117）支持建立了全南极高分辨率遥感影像镶嵌图，该图利用美国陆地卫星7号于1999-2003年间拍摄的1073幅影像以及覆盖南纬82.5度以南的中分辨率MODIS影像（拍摄于2005年）处理合成得到。基于该镶嵌图，结合南极科研需求，采用计算机自动解译和人工辅助相结合的方法，将南极洲地表覆盖划分为6大类：蓝冰、裂隙、裸岩、水体、冰碛、粒雪。经统计得到上述各类的面积和所占比例分别为：225207.29平方千米（1.651%），7153.36平方千米（0.052%），72958.04平方千米（0.535%），189.43平方千米（0.001%），310.76平方千米（0.003%），13337392.66平方千米（97.758%）。该地图为近似真彩色合成的卫星影像图，各地表覆盖类型采用不同的色块表示。该图主要为极地各学科科学研究、地理教育及科普等提供参考。

The full-Antarctic high-resolution remote sensing image mosaic was developed with support from the China National High-Tech R&D Program (863 Program, No. 2008AA09Z117). This mosaic was produced using 1073 images acquired by the U.S. Landsat 7 satellite from 1999 to 2003, alongside medium-resolution MODIS images (captured in 2005) covering regions south of 82.5°S. Based on this mosaic and in response to Antarctic scientific research requirements, the land cover of Antarctica was classified into six categories via a hybrid approach combining computer-aided automatic interpretation and manual assistance: blue ice, crevasses, bare rock, water bodies, moraines, and firn. Statistical calculations yielded the area and proportional share of each category as follows: 225,207.29 km² (1.651%), 7,153.36 km² (0.052%), 72,958.04 km² (0.535%), 189.43 km² (0.001%), 310.76 km² (0.003%), and 13,337,392.66 km² (97.758%). This map is an approximately true-color composite satellite image, with each land cover type denoted by distinct color patches. This mosaic primarily serves as a reference for scientific research across various polar disciplines, geographic education, science popularization, and related applications.

搜集汇总

背景与挑战

背景概述

南极洲地表覆盖图(1:900万)是基于1999-2003年美国陆地卫星7号和2005年MODIS影像合成的遥感影像图，将南极洲地表覆盖划分为6大类，并提供了各类的面积和比例数据，适用于极地科研、地理教育和科普用途。