Science. 1993 Jun 25;260(5116):1905-10. doi: 10.1126/science.260.5116.1905.
Landsat satellite imagery covering the entire forested portion of the Brazilian Amazon Basin was used to measure, for 1978 and 1988, deforestation, fragmented forest, defined as areas less than 100 square kilometers surrounded by deforestation, and edge effects of 1 kilometer into forest from adjacent areas of deforestation. Tropical deforestation increased from 78,000 square kilometers in 1978 to 230,000 square kilometers in 1988 while tropical forest habitat, severely affected with respect to biological diversity, increased from 208,000 to 588,000 square kilometers. Although this rate of deforestation is lower than previous estimates, the effect on biological diversity is greater.
利用覆盖巴西亚马逊流域全部林区的陆地卫星图像，对 1978 年和 1988 年的森林砍伐、破碎化林区（指面积小于 100 平方公里、被森林砍伐所包围的区域）以及距相邻森林砍伐区 1 公里范围内的边缘效应进行了测量。1978 年至 1988 年期间，热带森林砍伐面积从 78000 平方公里增加到 230000 平方公里，而生物多样性受到严重影响的热带森林生境面积从 208000 平方公里增加到 588000 平方公里。尽管这一砍伐速度低于此前的估计，但对生物多样性的影响更大。
