نتایج جستجو برای: hyrcanian area
تعداد نتایج: 584356 فیلتر نتایج به سال:
Engineering applications can be used to mitigate the adverse effects of soil compaction and amend compacted soils. Previous literature has highlighted beneficial interventions such as litter mulching incorporation on skid trails. However, little is known about effectiveness these alternatives in restoring forest quality after logging. The objective this study was properly elucidate above mentio...
Nitrogen (N) addition (10 and 15 g N m −2 year −1 as dissolved $${\mathbf{N}\mathbf{H}}_{4}{\mathbf{N}\mathbf{O}}_{3}$$ ) significantly increased the CO 2 efflux from forest soil fine root biomass in a maple (Acer velutinum Bioss.) plantation. Following seasonal pattern, showed an exponential relationship with temperature. The effect of atmospheric deposition on CO2 is still unclear Hyrcanian f...
Kooch Y, SM Hosseini, Hojjati SM, Fallah A. 2013. Variability of soil physical indicators imposed by beech and hornbeam individual trees in a local scale. Biodiversitas 14: 25-30. The objective of our study was to determine if soil physical indicators could be related to the influence of the individual trees in stands of mixed species growing on steep slopes in the Hyrcanian forests of Iran. Re...
Water-yield assessment is crucial to effectively achieve water supply management at the basin scale. It affected by climate change, and Land Use/Land Cover Change (LULCC). This paper quantifies combined impact of LULCC change on yield over short long-term periods in Haraz basin, Iran. has experienced severe forest degradation, agricultural expansion, urbanization. Most lands are within plains c...
تولید انبوه مرکبات در ایران، لزوم درجه بندی کیفی این محصولات را برای ورود به بازارهای جهانی تقاضا می کند. به همین منظور، در تحقیق حاضر، یک دستگاه سورتر (sorter) روباتیکی طراحی و ساخته شد تا بتواند میوه ها را بر اساس اندازه به سه قسمت کوچک، متوسط و بزرگ تقسیم نماید. دستگاه شامل بخش های نرم افزاری و سخت افزاری می باشد. قسمت سخت افزاری دستگاه از دو واحد تشکیل شده است. واحد اول، واحد تصویر برداری م...
Studying the present and future distribution status of important forest species is a prerequisite for the need of conservation programs in order to play their undeniable role in tackling global climate change, land use change and air pollution. The purpose of this study was to determine the distribution of oriental beech (Fagus orientalis Lipsky) in forests of northern Iran under the influence ...
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