Smith L C, Sheng Y, MacDonald G M, Hinzman L D
Department of Geography, 1255 Bunche Hall, University of California-Los Angeles, Los Angeles, CA 90095, USA.
Science. 2005 Jun 3;308(5727):1429. doi: 10.1126/science.1108142.
Historical archived satellite images were compared with contemporary satellite data to track ongoing changes in more than 10,000 large lakes in rapidly warming Siberia. A widespread decline in lake abundance and area has occurred since 1973, despite slight precipitation increases to the region. The spatial pattern of lake disappearance suggests (i) that thaw and "breaching" of permafrost is driving the observed losses, by enabling rapid lake draining into the subsurface; and (ii) a conceptual model in which high-latitude warming of permafrost triggers an initial but transitory phase of lake and wetland expansion, followed by their widespread disappearance.
将历史存档卫星图像与当代卫星数据进行比较，以追踪快速变暖的西伯利亚地区一万多个大湖泊的持续变化。自1973年以来，尽管该地区降水量略有增加，但湖泊数量和面积却普遍减少。湖泊消失的空间格局表明：（i）永久冻土的融化和“破裂”导致了观测到的湖泊消失，因为这使得湖泊能够迅速排入地下；（ii）一个概念模型，即永久冻土的高纬度变暖引发了湖泊和湿地扩张的初始但短暂阶段，随后它们广泛消失。
