The distribution and amount of carbon in the largest peatland complex in Amazonia
The distribution and amount of carbon in the largest peatland complex in Amazonia
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DOI：
10.1088/1748-9326/9/12/124017
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发表时间：
2014-12-01
影响因子：
6.7
通讯作者：
Baker, Timothy R.
中科院分区：
文献类型：
--
作者：
Draper, Frederick C.;Roucoux, Katherine H.;Baker, Timothy R.
众所周知，亚马逊秘鲁的泥炭地储存了大量的碳，但这些生态系统的空间范围和碳储存总量存在很大的不确定性。在这里，我们使用多传感器（陆地卫星，ALOS PALSAR和SRTM）遥感方法，连同实地数据，包括24个森林普查地块和218泥炭厚度测量，映射泥炭地植被类型的分布和计算的组合地上和地下碳储量的泥炭地生态系统在Pastaza-马拉农前陆盆地在秘鲁。结果表明，泥炭地总面积为35600 ± 2133 km（2），PgC含量为3.14（0.44-8.15）。泥炭厚度和体积密度的变化是这些值中最重要的不确定性来源。一种特殊的生态系统类型，泥炭地极森林，被认为是亚马逊地区碳密度最高的生态系统（1391 +/- 710 Mg C ha（-1））。建议将光学和雷达遥感与地上和地下碳清单相结合的新方法用于全球热带泥炭地的区域碳估计。最后，我们建议，亚马逊泥炭地应该是一个优先的研究和保护区域基础设施的发展导致这些生态系统的开发和退化加速之前。
Peatlands in Amazonian Peru are known to store large quantities of carbon, but there is high uncertainty in the spatial extent and total carbon stocks of these ecosystems. Here, we use a multi-sensor (Landsat, ALOS PALSAR and SRTM) remote sensing approach, together with field data including 24 forest census plots and 218 peat thickness measurements, to map the distribution of peatland vegetation types and calculate the combined above-and below-ground carbon stock of peatland ecosystems in the Pastaza-Maranon foreland basin in Peru. We find that peatlands cover 35 600 +/- 2133 km(2) and contain 3.14 (0.44-8.15) Pg C. Variation in peat thickness and bulk density are the most important sources of uncertainty in these values. One particular ecosystem type, peatland pole forest, is found to be the most carbon-dense ecosystem yet identified in Amazonia (1391 +/- 710 Mg C ha(-1)). The novel approach of combining optical and radar remote sensing with above-and below-ground carbon inventories is recommended for developing regional carbon estimates for tropical peatlands globally. Finally, we suggest that Amazonian peatlands should be a priority for research and conservation before the developing regional infrastructure causes an acceleration in the exploitation and degradation of these ecosystems.