Souza Yanara Ferreira de, Miguel Eder Pereira, Lima Adriano José Nogueira, Souza Álvaro Nogueira de, Matricardi Eraldo Aparecido Trondoli, Rezende Alba Valéria, Freitas Joberto Veloso de, de Souza Hallefy Junio, Oliveira Kennedy Nunes, Lima Maria de Fátima de Brito, Biali Leonardo Job
Department of Forest Science, Campus Darcy Ribeiro, University of Brasília (UnB), Brasília 70910-900, Brazil.
Tropical Forestry Department, National Institute for Amazon Research (INPA), Manaus 69067-375, Brazil.
Plants (Basel). 2024 Oct 3;13(19):2769. doi: 10.3390/plants13192769.
The Cerrado has high plant and vertebrate diversity and is an important biome for conserving species and provisioning ecosystem services. Volume equations in this biome are scarce because of their size and physiognomic diversity. This study was conducted to develop specific volumetric models for the phytophysiognomies Gallery Forest, Dry Forest, Forest Savannah, and Savannah Woodland, a generic model and a model for Cerrado forest formation. Twelve 10 m × 10 m (100 m²) (National Forest Inventory) plots were used for each phytophysiognomy at different sites (regions) of the Federal District (FD) where trees had a diameter at breast height (DBH; 1.30 m) ≥5 cm in forest formations and a diameter at base height (Db; 0.30 m) ≥5 cm in savanna formations. Their diameters and heights were measured, they were cut and cubed, and the volume of each tree was obtained according to the Smalian methodology. Linear and nonlinear models were adjusted. Criteria for the selection of models were determined using correlation coefficients, the standard error of the estimates, and a graphical analysis of the residues. They were later validated by the chi-square test. The resultant models indicated that fit by specific phytophysiognomy was ideal; however, the generic and forest formation models exhibited similar performance to specific models and could be used in extensive areas of the Cerrado, where they represent a high potential for generalization. To further increase our understanding, similar research is recommended for the development of specific and generic models of the total volume in Cerrado areas.
塞拉多拥有丰富的植物和脊椎动物多样性，是保护物种和提供生态系统服务的重要生物群落。由于其面积和外貌多样性，该生物群落中的材积方程很少。本研究旨在为植物外貌类型廊道森林、干旱森林、森林稀树草原和稀树草原林地开发特定的材积模型，一个通用模型和一个塞拉多森林形成模型。在联邦区（FD）不同地点（区域），针对每种植物外貌类型使用了12个10米×10米（100平方米）（国家森林资源清查）样地，在森林群落中，树木胸径（DBH；1.30米）≥5厘米，在稀树草原群落中，树木基径（Db；0.30米）≥5厘米。测量它们的直径和高度，将其砍伐并切成方块，根据斯马良方法获得每棵树的材积。对线性和非线性模型进行了拟合。使用相关系数、估计值的标准误差和残差的图形分析来确定模型选择标准。随后通过卡方检验对其进行验证。所得模型表明，按特定植物外貌类型进行拟合是理想的；然而，通用模型和森林形成模型的表现与特定模型相似，可用于塞拉多的广大区域，在这些区域它们具有很高的推广潜力。为了进一步增进我们的理解，建议开展类似研究，以开发塞拉多地区总体积的特定和通用模型。
