Carbon storage potential in degraded forests of Kalimantan, Indonesia
Carbon storage potential in degraded forests of Kalimantan, Indonesia
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印度尼西亚加里曼丹退化森林的碳储存潜力
DOI：
10.1088/1748-9326/aad782
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发表时间：
2018
影响因子：
6.7
通讯作者：
S. Ganguly
中科院分区：
文献类型：
--
作者：
A. Ferraz;Sassan Saatchi;Liang Xu;S. Hagen;J. Chave;Yifan Yu;V. Meyer;Mariano García;C. Silva;Orbita Roswintiart;A. Samboko;P. Sist;S. Walker;T. Pearson;A. Wijaya;F. Sullivan;E. Rutishauser;D. Hoekman;S. Ganguly
加里曼丹的森林受到以伐木、棕榈油种植和泥炭地火灾为主的广泛土地使用活动的严重压力。为了实施森林暂停以减少温室气体排放，印度尼西亚政府需要森林中储存的碳的信息，包括完整的，退化的，次生的和泥炭沼泽森林。我们开发了一种混合方法，通过结合实地清查图，机载激光雷达样本，卫星雷达和光学图像，在1公顷网格单元中制作加里曼丹岛完整和退化森林地上生物量（AGB）的墙到墙地图。获得了超过110 000公顷的激光雷达数据，以系统地捕捉森林结构的变化，并获得了超过104个实地地块，以开发激光雷达生物量模型。使用为66 439公顷旱地和44 250公顷湿地森林开发的模型，将激光雷达测量值转换为生物量。通过将AGB地图与全国土地覆盖地图相结合，我们发现22.3 Mha（106公顷）的森林仍然存在于旱地上，其生物量从相对完整的森林的357.2 ± 12.3 Mgha−1到严重退化森林的134.2 ± 6.1 Mgha−1。其余的泥炭沼泽森林在覆盖率和退化程度上是异质的，面积超过3.62 Mha，平均AGB为211.8 ± 12.7 Mgha−1。从地上生物量计算的排放系数仅表明，15百万公顷以上的退化和次生旱地森林的碳储存潜力约为1.1 PgC。
The forests of Kalimantan are under severe pressure from extensive land use activities dominated by logging, palm oil plantations, and peatland fires. To implement the forest moratorium for mitigating greenhouse gas emissions, Indonesia’s government requires information on the carbon stored in forests, including intact, degraded, secondary, and peat swamp forests. We developed a hybrid approach of producing a wall-to-wall map of the aboveground biomass (AGB) of intact and degraded forests of Kalimantan at 1 ha grid cells by combining field inventory plots, airborne lidar samples, and satellite radar and optical imagery. More than 110 000 ha of lidar data were acquired to systematically capture variations of forest structure and more than 104 field plots to develop lidar-biomass models. The lidar measurements were converted into biomass using models developed for 66 439 ha of drylands and 44 250 ha of wetland forests. By combining the AGB map with the national land cover map, we found that 22.3 Mha (106 ha) of forest remain on drylands ranging in biomass from 357.2 ± 12.3 Mgha−1 in relatively intact forests to 134.2 ± 6.1 Mgha−1 in severely degraded forests. The remaining peat swamp forests are heterogeneous in coverage and degradation level, extending over 3.62 Mha and having an average AGB of 211.8 ± 12.7 Mgha−1. Emission factors calculated from aboveground biomass only suggest that the carbon storage potential of more than 15 Mha of degraded and secondary dryland forests will be about 1.1 PgC.
影响因子：
13.5
作者：
Le Toan, T.;Quegan, S.;Ulander, L.
通讯作者：
Ulander, L.