Brown J Christopher, Koeppe Matthew, Coles Benjamin, Price Kevin P
Department of Geography, University of Kansas, USA.
Ambio. 2005 Aug;34(6):462-9.
The recent rise in Brazilian soybean production has generated concern among the environmental community and some authors that natural tropical environments of the Amazon Basin are being converted to soybean fields. Proponents of soybean production counter that soybeans represent a viable agricultural commodity for the region; environmental concern is unwarranted, because new soybean fields are replacing already deforested or otherwise transformed lands. Both arguments have been made without comprehensive study and measure of land-use/land-cover (LULC) in areas undergoing expansion of soybean production. This case study, conducted in the municipality of Vilhena, Rondônia, Brazil, in the southwestern Amazon Basin, uses remote sensing to evaluate the LULC accompanying this municipality's large growth in soybean production from 1996 to 2001. Forests are being converted for soybean production, but most of the production increase appears attributable to slight expansion of already existing fields, conversion of already deforested land, and higher yields.
巴西大豆产量最近的增长引起了环境界和一些作者的担忧，他们担心亚马逊盆地的天然热带环境正在被改造成大豆田。大豆生产的支持者则反驳说，大豆是该地区一种可行的农产品；对环境的担忧是没有根据的，因为新的大豆田正在取代已经砍伐森林或已被改造的土地。这两种观点都是在没有对大豆生产扩张地区的土地利用/土地覆盖（LULC）进行全面研究和测量的情况下提出的。本案例研究在巴西朗多尼亚州维莱纳市进行，该市位于亚马逊盆地西南部，利用遥感技术评估了1996年至2001年期间随着该市大豆产量大幅增长而发生的土地利用/土地覆盖变化。森林正在被改造成大豆田，但产量增加的大部分似乎归因于现有农田的轻微扩张、已砍伐森林土地的改造以及产量的提高。
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