نتایج جستجو برای: uneven aged stands
تعداد نتایج: 225767 فیلتر نتایج به سال:
The growth and quality of natural seedlings are important goals forest management in uneven-aged high stands. In this study, the recovery process physical chemical properties soil, as well variables beech on skid trails after skidding operations three time periods (10, 20, 30 years) were investigated Hyrcanian forests Iran. Results revealed that soil (organic C, total N, pH) fully recovered 20 ...
The aim of this study was to assess Acacia senegal trees’ characteristics as well evaluate the carbon stock under a variety ages in El Demokeya forest Sudan, where Gum Arabic belt is located. 12 sample plots, 2021 were randomly distributed represent entire area prior required measurements. designed squire plots with one hectare. In each plot, all trees counted, their height (m), and Diameters B...
Questions: Did fire regimes in old-growth Pinus ponderosa forest change with Euro-American settlement compared to the pre-settlement period? Do tree age structures exhibit a pattern of continuous regeneration or is regeneration episodic and related to fire disturbance or fire-free periods? Are the forests compositionally stable? Do trees have a clumped spatial pattern and are clumps evenor mixe...
The interactions between wind damage and biotic agents, such as root-rot cervids (bark-stripping), amplify the effects of storms on forests in Europe Norway spruce (Picea abies (L.) Karst.) stands, Eastern Baltic region particular. Due to uneven manageability information about their susceptibility can aid prioritization management for sustaining stands. This study compared effect bark-stripping...
Large-scale Quercus variabilis natural secondary forests are protected under the Natural Forest Protection (NFP) program in China to improve the ecological environment. However, information about nutrient characteristics and carbon (C) storage is still lacking. Plant biomass and C, nitrogen (N) and phosphorus (P) stoichiometry of tree tissues, shrubs, herbs, litter, and soil were determined in ...
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