نتایج جستجو برای: regeneration felling
تعداد نتایج: 61375 فیلتر نتایج به سال:
Maquira coriacea is a commercial tree species growing throughout the Amazon flood plain forests. Densities up to 14/ha of individuals, >10 cm diameter at breast height (DBH) were observed, corresponding to a basal area of 2 m/ha and a volume of 38 m/ha. The primary period of fruiting coincided with the annual flooding, but fruits were also produced in other parts of the year. Seedlings with den...
My interest in the topics of corporate citizenship and global governance arose from concerns regarding the ecological environment and a growing awareness that some of the world's most precious natural resources such as ancient forests, clean air and pristine oceans were under threat from a number of irresponsible big businesses.(Dobscha 2001) Logging companies felling old growth forests in Abst...
جایگزینی دندان های از دست رفته به وسیله ایمپلنت دندانی به فراوانی انجام میشود. برای اینکه ایمپلنت به طور بهینه جایگزین شود باید در استخوان ایده ال جایگذاری شود که البته این نقایص قابل ترمیم هستند، یکی از این روشها guided bone regeneration است.
Changes in teak harvesting techniques due to the Covid-19 outbreak was investigated at research locations community forests. This aims identify that used The each process, including felling, skidding, and timber transportation processes were analyzed using qualitative descriptive analysis. results showed technique wood process a semi-mechanical combined use of manual mechanical equipment. Manua...
Abstract We clarified the effect of advance regeneration on natural forest recovery after clearcutting conifer plantations over mid-term observation period (12–14 years to allow formation canopy). established understory-intact plot (UI-plot), where (AR; DBH more than 1 cm before clearcutting) were retained, and understory-cleared (UC-plot), all ARs removed at felling crops. surveyed individual ...
Silvopastoral systems are traditional components of the landscape in the Swiss Jura Mountains, and are promising approaches for the sustainable management of mountain areas worldwide. Due to complex vegetation dynamics, pasturewoodlands are very vulnerable to the currently occurring land use and climate changes. Therefore, management requires integrative long-term predictions of successional tr...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید