Faculty of Environmental Earth Science, Hokkaido University, Sapporo, Japan.
Institute for the Advanced Studies of Sustainability (UNU-IAS), United Nations University, Tokyo, Japan.
Environ Monit Assess. 2020 Aug 8;192(9):571. doi: 10.1007/s10661-020-08531-8.
Forests hold significant potential for carbon sequestration and climate change mitigation. Forest biomass estimation is vital for sustainable forest management, providing critical input data for implementing the United Nations Reducing Emissions from Deforestation and forest Degradation-plus (REDD+) mechanism. This study investigates the total carbon pools-aboveground biomass (AGB), belowground biomass (BGB), forest floor biomass, and soil carbon-using field-based information in the muyong forest management system, which is native to Ifugao in the Philippines. This study reveals that a difference may be observed between the total carbon stock of the private woodlots (muyong) and that of the communal forest (bilid). The results indicate that the bilid forest has trees with a small diameter at breast height (DBH) and high tree density in contrast to the muyong, which has trees with high DBH and low tree density. The average carbon stock per unit area is higher in muyong (150.8 tC/ha) than in bilid (126.1 tC/ha). These findings are valuable in determining whether Ifugao's muyong forest system should be included under the REDD+ framework. Human mediation and management helps forests to sequester a greater amount of carbon than they would without human intervention. Implementation of REDD+ should promote Ifugao's ecosystem and biodiversity conservation and agroforestry practices in addition to protecting traditional agricultural practices and livelihoods in relation to rice terraces.
森林在碳封存和减缓气候变化方面具有巨大潜力。森林生物量估算是可持续森林管理的关键，为实施联合国减少森林砍伐和森林退化所致排放量（REDD+）机制提供了重要的输入数据。本研究利用菲律宾伊富高本土的穆永森林管理系统的实地信息，调查了总碳库-地上生物量（AGB）、地下生物量（BGB）、森林凋落物层生物量和土壤碳。本研究表明，私人林地（穆永）和公有林（比力德）的总碳储量可能存在差异。结果表明，比力德森林的胸径（DBH）较小且树木密度较高，而穆永的树木则胸径较大且密度较低。单位面积的平均碳储量在穆永（150.8 tC/ha）比在比力德（126.1 tC/ha）更高。这些发现对于确定伊富高的穆永森林系统是否应纳入 REDD+框架具有重要意义。人类的干预和管理有助于森林封存比没有人类干预更多的碳。实施 REDD+除了保护与稻田有关的传统农业做法和生计外，还应促进伊富高的生态系统和生物多样性保护以及农林复合经营。
