Carbon Storage Potential of Silvopastoral Systems of Colombia
Carbon Storage Potential of Silvopastoral Systems of Colombia
复制标题
DOI：
10.3390/land9090309
复制
发表时间：
2020-09-01
期刊：
影响因子：
3.9
通讯作者：
Rosenstock, Todd S.
中科院分区：
文献类型：
--
作者：
Aynekulu, Ermias;Suber, Marta;Rosenstock, Todd S.
九个拉丁美洲国家计划利用森林牧场实践（将树木纳入牧场）来缓解气候变化。然而，在国家一级扩大森林畜牧业系统的累积潜力没有得到很好的量化。在这里，我们结合先前发表的树木覆盖数据的基础上，250米分辨率的MODIS卫星遥感图像为2000-2017年与生态区系区碳储量估计，计算历史和潜在的未来树木生物量碳储量在哥伦比亚草原。2000年至2017年间，哥伦比亚所有草原的树木覆盖率从15%增加到18%，总生物量碳（TBC）储量从0.41增加到0.48 Pg.2017年基于生态植物区的草原碳储量值范围（5至122 Mg ha（-1））表明有进一步增加的潜力。将各生态植物区的所有碳储存量提高到目前的中位数和第75百分位数水平，将分别使TBC储存量增加约0.06和0.15 Pg。纳入国家碳核算，这种第二级估计数可以在哥伦比亚和其他情况类似的拉丁美洲国家的国家自主贡献和适合本国的缓解行动执行计划中为森林畜牧业系统设定现实的目标。
Nine Latin American countries plan to use silvopastoral practices-incorporating trees into grazing lands-to mitigate climate change. However, the cumulative potential of scaling up silvopastoral systems at national levels is not well quantified. Here, we combined previously published tree cover data based on 250 m resolution MODIS satellite remote sensing imagery for 2000-2017 with ecofloristic zone carbon stock estimates to calculate historical and potential future tree biomass carbon storage in Colombian grasslands. Between 2000 and 2017, tree cover across all Colombian grasslands increased from 15% to 18%, with total biomass carbon (TBC) stocks increasing from 0.41 to 0.48 Pg. The range in 2017 carbon stock values in grasslands based on ecofloristic zones (5 to 122 Mg ha(-1)) suggests a potential for further increase. Increasing all carbon stocks to the current median and 75th percentile levels for the respective eco-floristic zone would increase TBC stocks by about 0.06 and 0.15 Pg, respectively. Incorporated into national C accounting, such Tier 2 estimates can set realistic targets for silvopastoral systems in nationally determined contributions (NDCs) and nationally appropriate mitigation actions (NAMAs) implementation plans in Colombia and other Latin American countries with similar contexts.