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近来巴西大豆生产的增长引发了环境保护团体以及一些学者对于亚马孙盆地的热带自然环境正在向大豆种植地转换的关注。大豆生产的支持者则认为大豆是区域的一种可行性农产品;对于环境的关注是没有根据的,因为新的大豆种植地正在替代已经被砍伐的林地或者是转换了的土地。两种观点虽被提出却都没有对大豆生产扩充区的土地利用与土地覆被(LULC)状况进行过综合研究与估量。本案例研究是在巴西的朗多尼亚州,亚马孙盆地西南部的维列纳市(Vilhena),通过遥感手段对1996～2001年以来该市大豆种植面积的大幅度增加所伴随的土地利用与土地覆被变化状况进行评估。结果表明虽然森林变成了大豆生产基地,但是大部分的大豆生产的增长归功于对已有土地的微量扩充、已伐林地的转换以及更高的单位产量。
The recent growth in Brazil’s soybean production has sparked the concern of environmental groups and some academics about the conversion of the tropical natural environment in the Amazon Basin to soybean cultivation. Proponents of soybeans believe that soybeans are a viable agricultural product in the region; concern about the environment is unfounded, as new soybean growing areas are replacing woodlands that have already been cleared or converted land. Although both views have been proposed, no comprehensive study and estimation has been conducted on the status of land use and land cover (LULC) in the soybean production expansion area. This case study was conducted in Vilhena, Brazil, in the state of Rondônia and southwestern Amazon Basin by means of remote sensing of land use and land use associated with a substantial increase in soybean acreage in the city since 1996-2001. Land cover changes to assess the situation. The results show that although the forest has become a soybean production base, much of the increase in soybean production has been attributed to the modest expansion of existing land, the conversion of deforested land and higher unit yields.