نتایج جستجو برای: carbon sequestration

تعداد نتایج: 289220  

Journal: :مرتع و آبخیزداری 0
محمد جعفری استاد، دانشکده منابع طبیعی، دانشگاه تهران، حسین آذرنیوند استاد، دانشکده منابع طبیعی، دانشگاه تهران احمد صادقی پور استادیار، دانشکده کویرشناسی، دانشگاه سمنان نادیا کمالی پور دکتری مرتعداری، دانشکده منابع طبیعی، دانشگاه تهران احمد حیدری دانشیار، دانشکده مهندسی و فناوری کشاورزی، دانشگاه تهران حسن مداح عارفی دانشیار، مؤسسه تحقیقات جنگل ها و مراتع

global warming and climate change have drawn special attention to soil and its potential for stable carbon sequestration. soils are the largest stores of carbon in terrestrial carbon cycle and contain about three times more carbon than vegetation cover and two times more than that of atmosphere. studying the effects of grazing on soil carbon storage is important because of the major role soil o...

2013
Vardan Singh Rawat

This study assessed the potential of carbon stock and carbon sequestration rates in Van Panchayat forests at an altitude of 15001800m. The Total forest biomass was 308.3 t ha -1 , of the total biomass tree layer contributed the most, followed by herbs and shrubs. The forest litter biomass varied between 5.4 t ha -1 (in rainy season) and 6.6 t ha -1 (in winter season). Maximum Carbon sequestrati...

2001
Howard J. Herzog Michael E. Wickett

Direct injection of CO2 into the ocean is a potentially effective carbon sequestration strategy. Therefore, we want to understand the effectiveness of oceanic injection and develop the appropriate analytic framework to allow us to compare the effectiveness of this strategy with other carbon management options. Here, after a brief review of direct oceanic injection, we estimate the effectiveness...

Journal: :journal of rangeland science 2010
m. alizadeh m. mahdavi m. h. jouri

the rangelands, as one of the largest dynamic biomes in the world,have very capabilities. regulation of greenhouse gases in the earth's atmosphere,particularly carbon dioxide as the main greenhouse gases, is one of these cases.the attention to rangeland, as cheep and reachable resources to sequestrate thecarbon dioxide, increases after the industrial revolution. rangelands comprise thelarge par...

Journal: :مرتع و آبخیزداری 0
رویا وزیریان کارشناس ارشد مدیریت بیابان، دانشگاه علوم کشاورزی و منابع طبیعی گرگان حمید رضا عسگری استادیار دانشگاه علوم کشاورزی و منابع طبیعی گرگان مجید اونق استاد دانشگاه علوم کشاورزی و منابع طبیعی گرگان چوقی بایرام کمکی استادیار دانشگاه علوم کشاورزی و منابع طبیعی گرگان

understanding the relationship between soil and plant is essential for reclamation of degraded lands. in order to investigate the relationship between atriplex halimus density with carbon sequestration the rangeland of incheborun was studied. soil samples were collected randomly by auger in the depth of 0-30 cm of the soil profile in three different plant densities (400 stand per hectare) with ...

ژورنال: علوم آب و خاک 2012
جهانگرد محمدی, , سید محسن حسینی, , سید محمد حجتی, , یحیی کوچ, ,

To investigate spatial variability of soil characteristics in the most valuble forest stands in the northern Iran using geostatistical approach, a twenty hectare area in Experimental Forest Station of Tarbiat Modares University was considered. Soil samples were taken from pits, mounds, canopy gaps, under single trees and closed canopy positions at 0 - 15, 15 - 30 and 30 - 45 cm depths using cor...

2006
Sofia Backéus Peder Wikström Tomas Lämås

Forests make up large ecosystems and by the uptake of carbon dioxide can play an important role in mitigating the greenhouse effect. In this study, mitigation of carbon emissions through carbon uptake and storage in forest biomass and the use of forest biofuel for fossil fuel substitution were considered. The analysis was performed for a 3.2 million hectare region in northern Sweden. The object...

Journal: Desert 2012
H.R. Motaghian J. Mohammadi

In a semiarid region of central Iran, effects of parent materials, physiography and landscape position, land use, andmanagement practices on association of organic carbon with secondary (aggregates) particles and aggregate stability canhave important consequences in terms of carbon sequestration and budgeting, deciding on the proper land use strategy andsuitable soil conservation practices. It ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2008
Erik Nelson Stephen Polasky David J Lewis Andrew J Plantinga Eric Lonsdorf Denis White David Bael Joshua J Lawler

We develop an integrated model to predict private land-use decisions in response to policy incentives designed to increase the provision of carbon sequestration and species conservation across heterogeneous landscapes. Using data from the Willamette Basin, Oregon, we compare the provision of carbon sequestration and species conservation under five simple policies that offer payments for conserv...

Journal: :محیط شناسی 0
نیلوفر حق دوست دانشجوی دکترای جنگلداری، دانشکدة منابع طبیعی و علوم دریایی، دانشگاه تربیت مدرس مسلم اکبری نیا دانشیار گروه جنگلداری، دانشکدة منابع طبیعی و علوم دریایی، دانشگاه تربیت مدرس سید محسن حسینی دانشیار گروه جنگلداری، دانشکدة منابع طبیعی و علوم دریایی، دانشگاه تربیت مدرس سعید ورامش دکترای جنگلداری، دانشکدة منابع طبیعی و علوم دریایی، دانشگاه تربیت مدرس

land-use change has strong effects on ecosystem properties, especially on soil carbon storage and it increased global atmospheric co2. degradation and loss of area and quality of hyrcanian forests are the biggest problems in these forests. one of the most important solutions to taking care of these problems is increasing plantations in these areas. therefore, investigation of the effects of dif...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید