نتایج جستجو برای: carbon resourse

تعداد نتایج: 281245  

Journal: :journal of rangeland science 2015
azam khosravi moshizi gholam ali heshmati abdol rassoul salman mahiny

carbon sequestration in rangeland ecosystems has been identified as a suitable strategy to offset greenhouse gas emissions that information of carbon sequestration hotspots is a good tool to improve rangeland management. objectives for this study were to assessment potential carbon sequestration in various rangeland types, to identify carbon sequestration hotspots and to study the effective fact...

Ahmad Jalalian Fatemeh Madadian Chaleshtory, Naser Honarjoo

Soil organic carbon has been the most important soil quality measurement factors and has intense relation with soil physical, chemical and biological characteristics. Organic matter and its components are important factors of soil aggregates constitution and stability and play significant role in its structure.So, this research has been done for achieving this purpose. This area is arounding sa...

Carbon sequestration in rangeland ecosystems has been identified as a suitable strategy to offset greenhouse gas emissions that information of carbon sequestration hotspots is a good tool to improve rangeland management. Objectives for this study were to assessment potential carbon sequestration in various rangeland types, to identify carbon sequestration hotspots and to study the effective fact...

Abstract Climate change and increase of global warming is one of the most important challenges in sustainable development, which is due to increase of concentration of greenhouse gasses and CO2 in atmosphere. Rangelands have approximately half of the worlds land area and store over third of terrestrial biosphere carbon. Therefore they have a large potential to sequester carbon. In this order, c...

A. Savari, A.R. Safahieh, M. Hamidian Pour, M. Khaleghi, S. Ghaemmaghami,

The mangrove forest ecosystem is known to possess a variety of ecosystem services, including high rates of carbon sequestration, storage and mitigating climate change through reduced deforestation. This study was carried out in the mangrove forests of Gowatr Bay, Gulf of Oman during 2017-18 to quantify biomass and carbon stocks of all components of this forest, including live and dead trees, so...

Journal: :جنگل و فرآورده های چوب 0
ضیاءالدین باده یان استادیار دانشگاه لرستان معصومه منصوری دانشجوی دکترا دانشگاه لرستان محبوبه فسحت دانشجوی کارشناسی ارشد دانشگاه تربیت مدرس محمد علی فخاری کارشناس ارشد سازمان جنگلها، مراتع و آبخیزداری کشور. سید محسن حسینی دانشیار دانشکده منابع طبیعی و علوم دریایی دانشگاه تربیت مدرس، پردیس نور

forest ecosystems and their optimal management can play effective roles in mitigating the carbon emission as well as absorbing the atmospheric carbon. the present research was carried out to determine the effects of 21 year old stands of cryptomeria japonica, cupressus sempervirens, pinus taeda, acer pseudo-platanu and mixed plantation and natural forest stands on sequestration of carbon in the...

Journal: :iranian journal of pharmaceutical research 0
n taghavi

effects of different carbon sources on growth and production of antifungal agent(s) by gymnopilus spectabilis were investigated. different carbon sources including; glucose, fructose, lactose, maltose, manitol and sucrose at the concentration of 10 g/l and slow releasing carbon sources including malt extract and soluble starch at the concentration of 2g/l were used. inhibition of spore germinat...

Journal: :journal of nanostructures 2014
s. feshki m. marandi

carbon spheres were fabricated by hydrothermal method and their structural properties were investigated. carbon spheres with average sizes around of 230, 320 and 430 nm were synthesized in different concentration of glucose aqueous solution and different hydrothermal reaction time. the temperature of 180 °c by a hydrothermal reaction was fixed in all of glucose concentration and hydrothermal re...

Journal: :محیط شناسی 0
صادق مهدوی متین حسین گنجی دوست

today the industrial wastes are one of the main problems in the developing countries. discharging the industrial wastewater into environment is harmful for human health and other living creatures.thus decreasing of the pollution load of waste waters is an important environmental issue.adsorption of chemical oxygen demand by biomass wastes can be a proper and low cost method for cod removal from...

Journal: :international journal of nano dimension 0
n. syarif department of chemistry, faculty of mathematics and natural sciences, university of indonesia, indonesia. department of chemistry, faculty of mathematics and natural sciences, sriwijaya university, indonesia.

graphite oxide constitutes carbon network with oxygen atoms both on hexagonal arrangement and the edge sites. structural and electronic properties for graphite-oxygen complexes have been explored using first-principles total-energy calculations within the local density approximation (lda). band structures and density of states for the propose carbon 3d models are reported. a finite energy gap and...

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