Oliveira Paulo J C, Asner Gregory P, Knapp David E, Almeyda Angélica, Galván-Gildemeister Ricardo, Keene Sam, Raybin Rebecca F, Smith Richard C
Department of Global Ecology, Carnegie Institution of Washington, Stanford, CA 94305, USA.
Science. 2007 Aug 31;317(5842):1233-6. doi: 10.1126/science.1146324. Epub 2007 Aug 9.
Disturbance and deforestation have profound ecological and socioeconomic effects on tropical forests, but their diffuse patterns are difficult to detect and quantify at regional scales. We expanded the Carnegie forest damage detection system to show that, between 1999 and 2005, disturbance and deforestation rates throughout the Peruvian Amazon averaged 632 square kilometers per year and 645 square kilometers per year, respectively. However, only 1 to 2% occurred within natural protected areas, indigenous territories contained only 11% of the forest disturbances and 9% of the deforestation, and recent forest concessions effectively protected against clear-cutting. Although the region shows recent increases in disturbance and deforestation rates and leakage into forests surrounding concession areas, land-use policy and remoteness are serving to protect the Peruvian Amazon.
干扰和森林砍伐对热带森林具有深远的生态和社会经济影响,但其分布模式较为分散,在区域尺度上难以检测和量化。我们扩展了卡内基森林损害检测系统,结果表明,1999年至2005年期间,秘鲁亚马逊地区的干扰率和森林砍伐率分别平均为每年632平方公里和645平方公里。然而,只有1%至2%发生在自然保护区内,原住民土地仅占森林干扰的11%和森林砍伐的9%,并且近期的森林特许权有效地防止了皆伐。尽管该地区近期干扰率和森林砍伐率有所上升,且有泄漏到特许权区域周边森林的情况,但土地利用政策和偏远性仍在保护秘鲁亚马逊地区。