农林复合经营
森林经营
气候变化
地理
森林生态学
生物多样性
固碳
持续性
作者
Maïri Souza Oliveira,Bryan Finegan,Fernando Casanoves,Diego Delgado,Norvin Sepúlveda,Adriana Aguilar Porras,María Alejandra Chamorro,Jean Pierre Morales Aymerich,Marie Ange Ngo Bieng
标识
DOI:10.1016/j.foreco.2021.119439
摘要
Abstract Sustainable management of secondary forests for timber production offers the opportunity to combine nature-based climate change mitigation with direct improvement of human livelihoods in the tropics, but this dual potential has rarely been explored. We characterized aboveground biomass (AGB) in secondary forests (SF) in Nicaragua and Costa Rica in whole stands (ecological potential), individual trees of timber species (total timber potential), and currently harvestable timber (harvestable timber potential). We also linked the three types of AGB potential to climate and soil factors. Data on 302 sample plots were collected, most from national forest inventories (NFIs) concerning 168 plots in Nicaragua and 134 plots in Costa Rica. We analyzed data from individuals ≥20 cm dbh, estimating biomass from field measurements of stem diameters, and wood density and tree height estimates from the BIOMASS package in R. We obtained climate data from CHELSA, soil data from the ISRIC world soils database and determined the relationship between the three AGB potentials and environmental variables using exploratory principal components analysis and general linear mixed models (GLMMs). A mean 51 Mg ha−1 AGB was found to be stored in trees ≥20 cm dbh in dry forests and 68 Mg ha−1 in wet forests. Maximum values were > 250 Mg ha−1 in both biomes, similar to primary forest values from the NFIs. Timber potential was high at 84% of the mean ecological potential of the study plots, with 73% in the currently harvestable category. Overall, both ecological and total timber potential AGB were significantly higher in wet than in dry forests, whereas currently harvestable timber potential was significantly higher in dry than in wet forests. The best GLMMs showed R2 = 0.31, 0.24 and 0.27 for ecological, total timber and harvestable timber potentials, respectively (P
科研通智能强力驱动
Strongly Powered by AbleSci AI