نتایج جستجو برای: selective felling

تعداد نتایج: 199877  

Journal: :Turkish Journal of Forestry | Türkiye Ormancılık Dergisi 2017

Journal: :Folia Forestalia Polonica 2022

Abstract The aim of the study was to identify influence different widths and cardinal directions felled corridors on condition mensuration characteristics English oak trees planted there during conversion low-value young stands using corridor method. carried out in forests forest-steppe zone at a permanent sample plot. experiment included 8-year-old stand improve its species composition. plots ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم 1372

a simple, sensitive and selective method for solvent extraction and spectrophotemetric determination of lanthanum (ii) europium (iii), and cerium (iii) is described , the rare earth metals are extracted into chloroform solution of n-phenylbenzohydroxamic acid (pbha) at ph 9-10 various parameters are studied to optimize the extraction conditions. the molar absorptivity is found to increase from ...

2006

Questions: Are calorimeters and pyrometers accurate and reliable for describing fire parameters in large-scale ecological projects, and can data from them predict data derived from thermocouples? Do mechanical pre-treatments in Florida scrub areas alter fire properties? Location: Lake Wales Ridge, Florida, USA. Methods: We deployed thermocouples attached to digital dataloggers, copper and lacqu...

Journal: :Forestry Engineering Journal 2023

The study can provide decision-making support to loggers and participants in forest relations who are obliged carry out reforestation activities assess the factors that change effectiveness of forestry logging operations. balance production environmental effects from use transport machines development is an important step effective quality management landscape restoration. degree compaction soi...

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