The use of mobile laser scanning to survey forest ecosystems is a promising, scalable technology describe the 3D structure forests at high resolution. We structurally complex, mixed-species Mediterranean test performance Handheld Laser Scanning (HLS) system estimate tree attributes within patch in central Spain. different stages HLS approach: field position, ground data collection, path design,...

In order to evaluate the possible correlation between the tree density and the human population density, the forested area in Nav Asalem district located in Guilan Province was selected. The descriptors of tree number and basal area per hectare as well as the stand density index were used to determine the tree density, which was conducted from a 2014 forest inventory including 62 cluster (558 p...

Pre-commercial thinning is a thinning method performed prior to trees reaching merchantable size, typically around 4.5 inches dbh (diameter at breast height measured at 4.5 ft. above the ground). The objective of a pre-commercial thinning is to release some trees in overstocked stands by reducing densities to prevent stagnation and increase the growth of the remaining trees. Many southern pine ...

We present two improvements for laser-based forest inventory. The first improvement is based on using last pulse data for tree detection. When trees overlap, the surface model between the trees corresponding to the first pulse stays high, whereas the corresponding model from the last pulse results in a drop in elevation, due to its better penetration between the trees. This drop in elevation ca...

Quantification of biophysical parameters of urban trees is important for urban planning, and for assessing carbon sequestration and ecosystem services. Airborne lidar has been used extensively in recent years to estimate biophysical parameters of trees in forested ecosystems. However, similar studies are largely lacking for individual trees in urban landscapes. Prediction models to estimate bio...

The techniques for conducting forest inventories have been established over centuries of land management and conservation. In recent decades, however, compelling new tools methodologies in remote sensing, computer vision, data science offered innovative pathways enhancing the effectiveness comprehension these sampling designs. Now with aid Unmanned Aerial Systems (UAS) advanced image processing...

Associated endogenous hormones were affected by forest fragmentation and significantly correlated with aboveground biomass storage. Forest threatens (AGB) affects biodiversity ecosystem functioning in multiple ways. We ask whether how influences AGB fragments. investigated differences between edges interiors, plant community characteristics influenced AGB. In six 40 m × plots spread across thre...

selection cutting using skidding system often causes physical damage to residual stand through felling and skidding resulting decline of bole quality and tree value. this research evaluated logging damage using skidding system on residual trees and stand regeneration in uneven aged hardwood forest of asalem, were selection cutting was practiced. in this regard, systematic sampling method was us...