نتایج جستجو برای: hornbeam and ironwood
تعداد نتایج: 16827235 فیلتر نتایج به سال:
Pollen analysis and AMS radiocarbon dating of a short sediment core from a mire in Veisar (Mazandaran province, N Iran) reveals the late-Holocene vegetation history of the area. High pollen values suggest that Caucasian alder (Alnus subcordata) has been present in the vicinity of the mire throughout the record. Wingnut (Pterocarya fraxinifolia), which was previously abundantly present, shows a ...
this research concentrates on the lithostratigraphy, biostratigraphy, microfacies and sedimentary environment of the asmari and gachsaran formations at southwest firuzabad. the thickness of the studied section in all 608.95 meters that 220.8 meters belong to the asmari formation and 387.95 meters belong to the gachsaran formation (champe and mol members). in the study area, the asmari formation...
abstract birbery and corruption and other criminal and as such is one of social phenomena , and i can firmly say that society is protected and safe from harm , this is criminal . eache community is familiar with these crimes and the crime associated ( direct or indirect ) with the political economic , social , and cultural beliefs and religious issues , especially with the community . admitted...
The role of specially protected natural monuments in the conservation biological diversity is irreplaceable. Many reserves have been established order to expand network areas Republic Azerbaijan, preserve biodiversity, and use resources efficiently. Along with State Nature Reserves, new parks gardens recently built, Eldar pine, acacia, alder, beech, etc. flora. plants, trees shrubs world flora ...
This one-year study focuses on the responses of a soil environment to implementation traditional forest management practices in oak–hornbeam stands with following treatments: cut (C), + litter raking (CR), grazing (CG), (CRG) and control (Ctrl). The was conducted 2018 through extremely heavy thinning. In autumn 2017 2018, we sampled soils, focusing microbial functional diversity (FD) assessment...
this dissertation has six chapter and tree appendices. chapter 1 introduces the thesis proposal including description of problem, key questions, hypothesis, backgrounds and review of literature, research objectives, methodology and theoretical concepts (key terms) taken the literature and facilitate an understanding of national security, national interest and turkish- israeli relations concepts...
knowledge of the stand condition and the gradual replacement of tree species in different development stages and phases provide appropriate information related to the close to nature treatments. stem exclusion phase is one of the important development phases in the forest stands development. the aim of study was to analyze the characteristics of dead trees in the stem exclusion phase in the les...
Macrofauna invertebrates of forest floors provide important functions in the decomposition process of soil organic matter, which is affected by the nutrient stoichiometry of the leaf litter. Climate change effects on forest ecosystems include warming and decreasing litter quality (e.g. higher C : nutrient ratios) induced by higher atmospheric CO(2) concentrations. While litter-bag experiments u...
BACKGROUND Pollinosis is found more frequently in urban areas than in rural environments. This could be partly related to the different types of pollen exposure in these dissimilar areas. The objective of this study was to compare the distribution of pollen in these environments across an urbanization gradient. METHODS Daily pollen abundances were obtained in France using Hirst-type sensors. ...
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