Respiration rates and chemical characteristics of soil organic layers were measured at 40 experimental plots, 5 sampling sites per plot, in a moderately polluted Niepołomice Forest, S. Poland. The respiration rate was positively related to pH, water content and concentrations of Ca and K, and negatively to Ntot, Zn and Pb (p < 0.001 for all variables). No significant correlation was found betwe...

When a tree, at a point where the circumference is Co, divides into two branches (cl and ct), what relationship exists between co and cl + c~? In order to answer this question, which has a definite bearing on problems of tree form, it is convenient to investigate first the relationship between the circumference at some point and the weight, w, of all the parts of the tree peripheral to this poi...

the log damage and value loss were examined by felling and bucking function, species, and damage type, in kheyrud forest in namkhaneh district in the hyrcanian forest of iran. in order to calculate the wood value following tree felling and bucking, 250 trees and 167 logs consisting of beech and hornbeam species were measured. there were five types of damage recorded following the tree felling o...

Engineering applications can be used to mitigate the adverse effects of soil compaction and amend compacted soils. Previous literature has highlighted beneficial interventions such as litter mulching incorporation on skid trails. However, little is known about effectiveness these alternatives in restoring forest quality after logging. The objective this study was properly elucidate above mentio...

The purpose of the research was recognition edge effects regarding similarities and differences vascular flora in undergrowth layers urban forest ecotones. Four types neighborhoods were analyzed: ecotones adjacent to manor park, agriculture field, housing estates road. plant compositions compared with interior nature reserve. phytosociological type studied forests a subcontinental oak-hornbeam ...

Estimating the diameter increment of forests is one most important relationships in forest management and planning. The aim this study was to provide insight into application two machine learning methods, i.e., multilayer perceptron artificial neural network (MLP) adaptive neuro-fuzzy inference system (ANFIS), for developing models Hyrcanian forests. For purpose, diameters at breast height (DBH...

When a tree, at a point where the circumference is Co, divides into two branches (cl and ct), what relationship exists between co and cl + c~? In order to answer this question, which has a definite bearing on problems of tree form, it is convenient to investigate first the relationship between the circumference at some point and the weight, w, of all the parts of the tree peripheral to this poi...

How different functional responses of consumers exploiting pulsed resources affect community dynamics is an ongoing question in ecology. Tree masting is a common resource pulse in terrestrial ecosystems that can drive rodent population cycles. Using stable isotope (δ(13)C, δ(15)N) analyses, we investigated the dietary response of two fluctuating rodent species, the yellow-necked mouse Apodemus ...

Since laser scanners systems became operational working tools, there have been many studies carried out to find the best way of their utilization. Generating a digital representation of the Earth surface and / or land cover has proven to be the biggest advantage of Light Detection and Ranging (LIDAR) data. The main objective of the presented study is to find out if there are any variations in a...