نتایج جستجو برای: and carbon sequestration prescott et al
تعداد نتایج: 17152165 فیلتر نتایج به سال:
growing process of industrialization in different societies, excessive expansion of industries and factories and increase transport industries, push human toward unstable development. among these problem, massive volume of pollutions is also added to the atmosphere. air pollution in industrial societies and cities is more intensive. global warming is one of the major problems of 21 century. co2...
Cow’s milk allergy (CMA) is one of the most commonly reported food allergies in infancy (Prescott et al. 2013). Incidence of CMA peaks during early childhood and tends to recede later, with the reported prevalence to be 0.6–2.5% in pre-schoolers, 0.3% in older children and teens, and less than 0.5% in adults (Fiocchi et al. 2010). A recent study performed in Europe supports these findings by de...
بررسی روابط تکاملی و فیلوژنی در گیاهان، از طریق صفات مورفولوژیکی همواره متداول بوده است. گیاهان براساس ویژگی های موفولوژیک متمایزکننده شناسایی می شوند (du1 et al., 2006). در بعضی موارد شناسایی گونه های گیاهی براساس صفات موفولوژیک مشکل و دارای محدودیت است. در مواردی نشانگرها و صفات مورفولوژیک به علت تاثیرپذیری از محیط کارایی کمی در شناسایی و رده بندی گونه ها دارند (shen et al., 1998). در سال ها...
The carbon sequestaration by plants and soil is one of the easiest and the most econimical ways to reduce atmosphere carbon. This study was conducted on the planted land use of Fraxinus rotundifolia, Cupressus arizonica, obinia pseudoacacia L., Elaeagnus angustifolia, Cedrus libani, and Quercus brantii (persica) in the Arjan plain of Fars province. For each plantation land use, there were three...
Land-use Change and Carbon Sinks: Econometric Estimation of the Carbon Sequestration Supply Function
If the United States chooses to implement a greenhouse gas reduction program, it would be necessary to decide whether to include carbon sequestration policies—such as those that promote forestation and discourage deforestation—as part of the domestic portfolio of compliance activities. We investigate the cost of forest-based carbon sequestration by analyzing econometrically micro-data on reveal...
در یک سیستم آبیاری از شبکه کانال های باز استفاده می شود. آب از منبع به شبکه با کانال های شاخه ای شامل فرعی ها و انشعاب ها توزیع می شود. تعیین پروفیل سطح آب در کانال های شبکه با دبی معلوم و تراز مشخص در پایین دست اهمیت ویژه ای دارد. در دهه های گذشته مدل های عددی متعددی برای محاسبات جریان متغیر تدریجی در شبکه ها پیشنهاد شده است. در بسیاری از این مدل ها به منظور کاهش عرض ماتریس کل، روش های ویژه ا...
Evapotranspiration (ET) is an important component of the hydrologic budget because it expresses the exchange of mass and energy between the soil-water-vegetation system and the atmosphere. Prevailing weather conditions influence potential or reference ET through variables such as radiation, temperature, wind, and relativity humidity. In addition to these weather variables, actual ET (ETa) is al...
One of the methods to increase the incomes utilization of range is recreational use from rangelands, but these uses can have negative effect. So in this study, we were investigated the effect of recreational use from rangeland on carbon sequestration in Miankale biosphere reserves. In order to, after preliminary identification, for sampling from ecotourism area and non-ecotourism area, tw...
lation rates of coastal ecosystems, such as those of mangroves, seagrasses, and salt marshes, as a means of sequestering (blue) carbon for climate mitigation purposes. Material from dead plants and animals in salt marshes accumulates over time in low-oxygen conditions, limiting the CO2 emissions from the normal process of aerobic decomposition (McLeod et al. 2011; Chmura et al. 2003; Duarte et ...
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