中文摘要：

巴西热带雨林地区森林景观转化及破碎化导致森林生态系统的功能和区域环境发生变化,并引起全球范围内的关注。以欧洲太空局全球土地利用/土地覆被数据和Landsat解译数据为基础,利用热点提取、信息熵、地统计分析模型及轨迹分析的方法探讨不同砍伐阶段森林破碎性的变化特点以及森林破碎化与整个区域景观格局变化的相关性。结果表明：1热带雨林地区的森林面积迅速减少,其中,Rondonia州、Maton Grosso州和Para州最为典型。2森林破碎性的变化趋势并非整体性的增加或减少,而是出现明显的局地性特点;3森林砍伐的数量与土地系统的信息熵呈正相关,即森林的数量及质量直接决定巴西热带雨林地区的土地系统稳定性。

英文摘要：

It arouses attention that the transformation and fragmentation of the Brazilian tropical rainforest has caused great changes in its ecosystem and environment as well as in forest cover. The forest fragmentation changes the function of forest ecological system and regional environment in Brazilian tropical rainforest, which attracts global attention. In this paper, the authors used ESA global land use/land cover data and Landsat interpreted data, as well as scientific methods such as hotspot extraction, information entropy, statistical analysis model and trajectory analysis to explore the relationship between change features of forest fragmentation in different deforestation stages and changes in forest fragmentation and regional landscape pattern. The results showed that：（1） The area of forest decreased rapidly in the tropical rainforest, among which Rondonia State, Maton Grosso State and Para State were the most typical;（2） The changing trend of forest fragmentation was not holistically increased or decreased, but represented a obvious regional pattern;（3） There was positive correlation between the number of deforestation and land system information entropy, namely the quantity and quality of forest directly determined the stability of the land system in Brazil＇s tropical rainforest.