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本文基于20世纪70年代的土地利用/土地覆被地图和90年代的卫星影像,估计了墨西哥恰帕斯selva Lacandona地区3个亚区的土地利用/土地覆被变化以及相关的碳通量。郁闭林的总面积减少了31%,然而次生林扩大了9倍多,次生灌木扩大了几乎6倍,耕地和牧场面积分别扩大了21%和92%。然而,在整个研究区域,土地利用/土地覆被变化并不是均一分布的。总的平均碳密度范围从郁闭成熟林的452Mg C/hm~2到牧场的120Mg C/hm~2。估计变化剧烈的地区损失了1976年总碳库的24%,然而受影响较少的地区仅损失了3%。
Based on land-use / land-cover maps of the 1970s and satellite images of the 1990s, the paper estimates land-use / land-cover changes and associated carbon fluxes in three sub-regions of the Selva Lacandona region in Chiapas, Mexico. The total area of candelabrum decreased by 31%, however, the secondary forest expanded more than 9 times, the secondary shrubs expanded almost 6 times, and the area of arable land and pasture increased by 21% and 92% respectively. However, land use / land cover changes are not uniformly distributed across the study area. The total average carbon density ranged from 452 Mg C / hm ~ 2 in canopy closed forests to 120 Mg C / hm ~ 2 in pasturelands. Areas estimated to have changed dramatically lost 24% of total carbon stocks in 1976, while only 3% were lost in less affected areas.