Urban forests can provide essential environmental and social functions if properly planned managed. Tree inventories measurements are a critical part of assessing monitoring the size, growth, health condition urban trees. In this context, parameters usually collected diameter at breast height (DBH) total height, but additional data about crown dimensions (width, length, projection) required for...

Forest aboveground biomass (AGB) plays an important role in regulating the global carbon cycle and is thus essential component of ecosystem functioning. In relationships between biodiversity functioning (BEF), studies have shown that many biotic factors (e.g., species, functional traits, large trees) abiotic significant impacts on AGB. However, relative strength these affecting remains unclear....

Numerous studies have demonstrated that tree survival is influenced by negative density dependence (NDD) and differences among species in shade tolerance could enhance coexistence via resource partitioning, but it is still unclear how NDD affects tree species with different shade-tolerance guilds at later life stages. In this study, we analyzed the spatial patterns for trees with dbh (diameter ...

Accurately characterizing the relationships between tree height and diameter at breast (DBH) is vital to quantify productivity predict growth for forest management. This study makes use of data from inventories in Caribbean islands Puerto Rico, Trinidad U.S. Virgin Islands compare efficacy parametric mixed models, random mixed-effects algorithms (MERF) modeling species-specific H-D relationship...

As an important source of medicine, food, and high-quality wood, Choerospondias axillaris has been widely planted in South China. However, few studies its growth traits rhythm concerning the selection superior provenances/families were developed. In this study, 77 families from five provenances studied grouped. Tree height, diameter at breast height (DBH), crown width within between rows measur...

Traditional site index curves are frequently produced for shade-intolerant species but scarce shade-tolerant species. Red spruce (Picea rubens Sarg.) can be found in three distinct geographic regions (northern, central, and southern) within the Appalachian Mountains. The one commonly used set of red is over ninety years old. A definite need exists a modern, regionally applicable curves. This re...

The defoliation and fruit characteristics of natural Castanea sativa Mill. forests were annually monitored between 2014 2016 in İstanbul, Turkey. soil forest floor properties also investigated evaluated according to the stand development stages. Comparisons made with ANOVA Tukey HSD tests; relationship yield tested correlation analysis; allometric regression models developed for DBH (diameter a...

Diameter at breast height (DBH) distributions offer valuable information for operational and strategic forest management decisions. We predicted DBH using Norwegian national inventory airborne laser scanning data compared the predictive performances of linear mixed-effects (PPM), generalized linear-mixed (GLM), k nearest-neighbor (NN) models. While GLM resulted in smaller prediction errors than...

Forest measurements using conventional methods may not capture all the important information required to properly characterize forest structure. The objective of this study was develop a low-cost alternative method for inventory and characterization structure handheld LiDAR technology. Three-dimensional (3D) maps trees were obtained an iPad Pro with sensor. Freely-available software programs, i...

Tree diameter at breast height (DBH) is the most fundamental factor in modelling tree growth, but current DBH measurement instruments mainly focus on instantaneous acquisition, making it difficult to measure growth continuously and accurately. In this study, we propose a wireless sensing network that can transmit data signal-free environments, combine sensor computer technologies develop real-t...