نتایج جستجو برای: and forest

تعداد نتایج: 16850233  

Asadollah Shahbahrami Hamid Hassanpour Hamidreza Gorgani Firouzjaee,

At present, there is no conventional scientific method to evaluate the area of the burnt regions of forests and in this field, the related organizations use different methods and variables. Also, the speed in performing the processes of area computing and damage evaluation, especially in the extensive damaged forest regions is very slow; consequently, the expression of results takes more ti...

Journal: :محیط شناسی 0
محمدحسن امتحانی حمیدرضا عظیم زاده محمدرضا اختصاصی

prosopis cineraria (l.) druce (kahour in persian) is a native and indicative species of saharo-sindian region. prosopis forest in iran extends from the beach of persian gulf and oman sea in boushehr, hormozgan and sistan-baluchistan provinces to south of kerman province. in this research ecological conditions of prosopis such as floristic diversity, climate, soil and the biomass were studied. i...

Journal: :journal of insect biodiversity and systematics 0
ibrahim khalil al haidar department of zoology, university of chittagong, chittagong-4331, bangladesh md. farid ahsan department of zoology, university of chittagong, chittagong-4331, bangladesh syed abbas 61/2 north pirerbag, mirpur, dhaka-1216, bangladesh md. tarik kabir white-rumped vulture conservation in bangladesh project, iucn bangladesh

butterflies of the inani reserve forest were studied between may 2014 and may 2015. one hundred twenty five species of butterflies belonging to 84 genera and six families (hesperiidae, papilionidae, pieridae, lycaenidae, riodinidae and nymphalidae) were recorded during this study. the highest number of species comprised family nymphalidae (38 species, 30.4%) followed by lycaenidae (35 species, ...

Journal: :journal of agricultural science and technology 2012
n. rezaie m. h. roozitalab h. ramezanpour

all of the tea plantations in iran are concentrated in the caspian sea region on soils previously developed under deciduous natural forests. this research conducted to study the effect of land use change (from forest to tea) on selected physico-chemical and mineralogical properties of soils under humid climate and mountainous landscape in northern iran. three transects facing west to northwest ...

توانکار, فرزام, نیکوی, مهرداد,

Rotten and dead trees are the main component of forest ecosystems and play an important role in maintaining forest biodiversity. In this research frequency and characteristics of large diameter trees (normal, rotten, and dead trees) with diameter at breast height greater than 60 cm were studied in two compartments (selective logged and protected) in Asalem-Nav forest. Random systematic sampling...

, ,

Background: Public participation in decisions regarding natural resources is the easiest way to ‎preserve these resources. It seems that having human of conservation ethics of natural resources, ‎has affect on their participation in the preservation of natural resources. This survey research was ‎done to investigate the relationship between conservation ethics of natural resources and ‎particip...

Journal: :محیط زیست طبیعی 0
حسین وارسته مرادی استادیار دانشکده شیلات و محیط زیست، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران

although host species generally face increased risk of brood parasitism in fragmented temperate landscapes and forest edge, little information exists to assess such risks in tropical birds. we studied how cuculidae species populations, host species population, and micro-environmental variables changed along an edge-to-interior gradient in peninsular malaysia. bird observations and environmental...

Local people are always dependent on cutting down and pollarding of Zagros forests trees to provide their livelihoods needs such as house heating, cooking, supply of livestock forage and building materials. The stakeholders also have many conflicts in terms of forest utilization, which is the main cause of many irregularities in the forest management. The present study was conducted to investig...

Eneje N.C. Mbah E.N Onwubuya E.A.

The study examined prospects of selected forest fruits and vegetables in Enugu North Agricultural zone of Enugu State, Nigeria. Structured interview schedule and focus group discussion were used to collect data from a sample of one hundred and twenty (120) respondents. Data were analyzed using matrix rank ordering, percentage, mean scores and standard deviation. Results of the study identified ...

Journal: :جنگل و فرآورده های چوب 0
محمود بیات دکتری جنگل داری، دانشکدۀ منابع طبیعی دانشگاه تهران، کرج، ایران منوچهر نمیرانیان استاد، دانشکدۀ منابع طبیعی دانشگاه تهران، کرج، ایران محمود زبیری استاد، دانشکدۀ منابع طبیعی دانشگاه تهران، کرج، ایران تیمو پوکالا استاد گروه جنگل داری، دانشگاه شرقی فنلاند، جوئنزو، فنلاند

hyrcanian forests are the most valuable forests in the north of iran and industrial harvesting occurs only in this area. it is a productive region near the southern coast of caspian sea. in these forests mixed beech stands mostly shown uneven-aged structure that is managed under selection system. in order to determine the priority of uneven aged method not only from an ecological view, but also...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید