Zoning for edaphoclimatic aptitude of Bambusa vulgaris and Dendrocalamus giganteus in Brazil

Karina Rodrigues Santos,Soraya Alvarenga Botelho,Lucas Amaral De Melo,Renato Luiz Grisi Macedo,Patrícia Vieira Pompeu

doi:10.1590/1983-40632019v4953713

Abstract

ABSTRACT The use of renewable materials and more sustainable processes are essential to minimize the negative impacts of population growth. Bamboo is a viable alternative, because it is a product with potential properties for wood replacement. However, to achieve a good yield, it is necessary to identify suitable sites for the forestry of the species. This study aimed to forecast favorable areas for the best establishment and development of Bambusa vulgaris and Dendrocalamus giganteus in the Brazilian territory, functioning as a zoning for edaphoclimatic aptitude that can support decision-making. It was performed using georeferenced points of natural occurrence for the species, collected from a virtual herbarium. The environmental variables were extracted from the WorldClim, MOD16 and SoilGrids databases. In order to select the set of variables to be used for modeling each species, a correlation test was performed. From this result, ten environmental variables were used for each species, and non-correlated variables were chosen. A principal component analyses was applied to select the variables that better explained variability. For the distribution map, the Maxent algorithm was used, based on the principle of maximum entropy, evaluated by the AUC and TSS metrics. Bambusa vulgaris presents a large area for adaptation in the Brazilian territory, unlike the Dendrocalamus giganteus species, which showed a limited aptitude area.

Highlights

Alternatives that aim to minimize negative environmental impacts, such as the threat to natural resources and large greenhouse gas emissions, generated by the population growth, are extremely important
Observing the required use of renewable and sustainable materials to mitigate the negative impacts of population growth, in combination with the knowledge about climatic aptitude for the forestry of species of commercial interest, this study aimed to forecast favorable areas for the best establishment and development of Bambusa vulgaris and Dendrocalamus giganteus in the Brazilian territory, functioning as a zoning for edaphoclimatic aptitude that can support decision-making
The points were filtered, excluding inaccurate and doubtful data (Elith & Leathwick 2009), and, after the selection filter, the number of georeferenced points of natural occurrence were 17 for B. vulgaris and 12 for D. giganteus (Figure 1). These are satisfactory numbers, considering the study by Wisz et al (2008), which addresses good results using Maxent for only 10 points. These georeferenced points were obtained from the herbarium database of the Global Biodiversity Information Facility (GBIF), a research vehicle widely used for studies with such purpose (Giannini et al 2012)

Summary

Introduction

Alternatives that aim to minimize negative environmental impacts, such as the threat to natural resources and large greenhouse gas emissions, generated by the population growth, are extremely important. According to Bonilla et al (2010), the use of renewable materials and more sustainable processes are imperative in this scenario. Faced with this context, bamboo has been highlighted as a viable alternative, because it is a non-timber and renewable forest product, with characteristics and potential properties for wood replacement, since the plant shows a woody tissue in its structure (FAO 2007). 2. Universidade Federal de Lavras, Departamento de Ciências Florestais, Lavras, MG, Brasil

Objectives

Methods

Results