Repeated measurements of plots are usually made to directly determine carbon stock changes over time. However, it is sometimes only practical or feasible to inventory plots at the end of a period of interest, and stock changes need to be predicted retrospectively from supplementary information on growth rate. This situation applied to the natural stratum of post-1989 forest in New Zealand, for ...

The investigation of the effect of nanoparticles’ mean diameter and temperature of Al2O3–water nanofluid on velocity and energy field using the lattice Boltzmann method is the main objective of  this study. The temperature of the vertical walls is considered constant at Tc and Th, respectively, while the up and the down horizontal surfaces are smooth a...

abstract the oak leafroller moth , tortrix viridana l. is a destructive pest within it’s spreading area which invades the oak species, especially in west and northwest forests of iran, in recent years. some parts of west azarbayjan’s forests which are located in piranshahr and sardasht region have been affected by this pest since 1989 that oak trees vigor and survival have been gone down result...

The response was assessed subjectively, and by strength of grip and ring size measurements. The strength of grip in each hand was measured in the usual way by squeezing a small rubber bag attached to a sphygmomanometer and taking the average of three observations. Ring sizes were measured over the finger proximal interphalangeal joints using a set of standard jeweller's rings with half sizes. (...

A plantation trial of six selected clones of Dalbergia sissoo Roxb. laid out in randomized block design at four sites in northern India during July, 1996 was evaluated for growth, physiological and biochemical parameters. Genotype-site interactions were significant for collar diameter increment, photosynthetic rate, transpiration rate, stomatal conductance, photosynthetic pigments, total solubl...

It is important to understand the response of stem diameter variations in dominant tree species water conditions Northeast China. The results will provide basic information for scientific predictions future development trend temperate forests eastern mountainous area northeast We employed a high-precision dendrometer continuously monitor radial changes six China from 15 April 24 October 2021. P...

The characteristics and distribution of foliage biomass are important aspects the crown structures trees. In this study, we developed a model at branch level annual shoot (i.e., all branches on an increment main tree bole) using sample 51 Korean pine trees that were destructively sampled in Liaoning Province, northeast China. A variety independent variables, including branches, trees, forest co...

Afforestation of abandoned agricultural lands contributes significantly to carbon sequestration. The aim the research is study growth dynamics pine forests on farmlands. average biometric parameters model trees indicate that young stands in area are approaching 20th age. Significant relationships were revealed between morphological parameters, which shows sustainability dynamics. Carbon sequest...

最近（2011年または2012年）に間伐された過密壮齢林2林分を対象に，本数率30％前後の強度が中庸な下層間伐が樹冠長の7年間の変化および4年間の胸高直径成長に及ぼす影響を調べた。いずれの間伐林でも平均樹冠長は時間とともに増加した。間伐林における樹高の成長速度は0.2 m/年前後であるのに対し，生枝下高の上昇速度はほぼ0.0 m/年であった。間伐林の平均胸高直径成長量は，放置林のそれより有意に高かった。また，期首胸高直径と胸高直径成長量の関係では，期首胸高直径が大きな立木ほど間伐林と放置林の胸高直径成長量の差が大きくなった。本研究は，中庸な下層間伐によって，過密壮齢林における樹冠底部の生枝の枯れ上がりが停止した事例を報告した。ただし，樹冠競合で相対的に劣勢な立木ほど，胸高直径成長促進の効果が低くなると考えられる。