全球智库信息集成服务系统(G2TT): Model selection changes the spatial heterogeneity and total potential carbon in a tropical dry forest.

G2TT

来源类型	Article
规范类型	其他
DOI	10.1016/j.foreco.2017.09.018
	Model selection changes the spatial heterogeneity and total potential carbon in a tropical dry forest.
	Corona-Núñez RO; Mendoza Ponce A; López-Martínez R
发表日期	2017
出处	Forest Ecology and Management 405: 69-80
出版年	2017
语种	英语
摘要	Understanding how aboveground biomass (AGB) is spatially distributed in the landscape and what factors are involved is critical to identify the ecological constraints limiting the magnitude and the allocation of carbon (C) stocks. Yet these factors remain poorly quantified for much of the world. The aim of this study is to identify the factors that influence the reconstruction of potential AGB and its spatial heterogeneity under current climate. A range of statistical approaches is used here to reconstruct the spatial distribution of AGB found in a tropical dry forest in Mexico. This is one of the first studies to directly quantify the predictive performance of various techniques within a common framework applied to AGB estimates from field observations and biophysical variables. The results suggest that general linear model (GLM) and the general additive model (GAM) performed similarly and outperformed other more complex approaches, such as automated neural networks, generalized linear mixed models via penalized quasi-likelihood, MaxEnt and random forest. GLM and GAM approaches also showed good performance in comparison to independent field observations over different spatial resolutions. MaxEnt performed poorly against independent validation data. The GLM, GAM, neural networks and regression tree models returned comparable mean AGB, suggesting that the potential AGB in the studied area is ∼132 Mg ha−1. The biomass spatial distribution is represented differently by the different models. Neural networks and regression tree approaches tend to cluster similar AGB estimates with a large range of the spatial autocorrelation, while the GLM is capable of reproducing the spatial distribution of the biomass.
主题	Ecosystems Services and Management (ESM)
关键词	Above ground biomass Mexico Potential carbon stocks Reconstruction Tropical dry forest
URL	http://pure.iiasa.ac.at/id/eprint/14852/
来源智库	International Institute for Applied Systems Analysis (Austria)
引用统计
资源类型	智库出版物
条目标识符	http://119.78.100.153/handle/2XGU8XDN/131141
推荐引用方式 GB/T 7714	Corona-Núñez RO,Mendoza Ponce A,López-Martínez R. Model selection changes the spatial heterogeneity and total potential carbon in a tropical dry forest.. 2017.