Xem 1-20 trên 60 kết quả Carbon and forest
  • Sustainable forest management (SFM) is not a new concept. However, its popularity has increased in the last few decades because of public concern about the dramatic decrease in forest resources. SFM is generally implemented using criteria and indicators (C&I) that define forest management standards, and several countries have established their own sets of C&I within the framework of different international or regional processes. Nevertheless, none of the C&I systems have been universally accepted and future research should consider the current and future indicators....

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  • The  value of  the UK  LCEGS  sector was £106.5 billion  in 2007/8.  In  terms of  size,  this puts  the  low  carbon  and  environmental  economy  somewhere  between  the  UK’s  healthcare  and  construction  sectors.   The UK is the world’s sixth largest low carbon and environmental economy, with 3.5% of global market  share.  As  shown  in  Figure 2,  the  Environmental  sector  accounts  for £22.3 billion  (21%) of  total UK  market  value,  Renewable  Energy  for  £31.

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  • Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: Carbon and mineral nutrient pools in a gallery forest at Mogi Guaçu River, Southeast Brazil...

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  • These research teams study for example the impact and mechanisms of greenhouse gas emissions and atmospheric pollutant on climate, ozone depletion and carbon sinks (oceans and inland waters, forests and soil). They do research to understand the mechanisms and assess the impact of global change on the water cycle, water quality and availability, as well as soil functions and quality to provide the bases for management tools for sustainable water systems. Biodiversity and ecosystems are analysed to understand and minimise the negative impacts of human activities.

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  • Forests play a major role in global carbon (C) cycle, and the carbon density (CD) could reflect its ecological function of C sequestration. Study on the CD of different forest types on a community scale is crucial to characterize in depth the capacity of forest C sequestration.

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  • Forest ecosystems cover large parts of the terrestrial land surface and are major components of the terrestrial carbon (C) cycle. Most important, forest ecosystems accumulate organic compounds with long C residence times in vegetation, detritus and, in particular, the soil by the process of C sequestration. Trees, the major components of forests, absorb large amounts of atmospheric carbon dioxide (CO2) by photosynthesis, and forests return an almost equal amount to the atmosphere by auto- and heterotrophic respiration.

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  • Many have gone above and beyond the call of duty to make this special issue possible. The editorial team at Forced Migration Review has been the anchor on which we have all relied. The authors of the articles and those who submitted pieces we could not include deserve special recognition. Their work was done after-hours, often in the field during time they did not have. Ricardo Ernst, my fellow guest editor, has been an able partner responding with feed- back from all corners of the globe.

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  • Though the fraction of energy-related CAP emissions for the wood products sector is larger than the energy-related fraction for pulp and paper, due to the greater energy requirements of the pulp and paper industry, on a ton-basis energy-related CAP emissions are much larger for the pulp and paper sector than they are for wood products sector.

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  • Chapter 11 Soil Carbon Accumulation in Old-Growth Forests An area of 4.1 billion ha land is covered with boreal, temperate and tropical forest, together comprising up to 80% of the terrestrial aboveground carbon and 40% of total soil carbon

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  • Just under a third (31%) of overall activity in this sector is in manufacturing, with the highest levels of  manufacturing  in  the Wind  and  Carbon  Capture  &  Storage  sectors ‐  the  latter  a  reflection  of  the  current drive to prove the technology through pilot projects.

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  • Chapter 14 Biomass Chronosequences of United States Forests: Implications for Carbon Storage and Forest Management Forest Management and Carbon Sequestration Forests account for a large fraction of the carbon stored in global soils and vegetation (Dixon et al. 1994).

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  • Oracle Real Application Clusters (RAC)1 is an option to the award-winning Oracle Database Enterprise Edition. Oracle RAC is a cluster database with a shared cache architecture that overcomes the limitations of traditional shared-nothing and shared-disk approaches to provide highly scalable and available database solutions for all your business applications. Oracle RAC is a key component of Oracle’s enterprise grid architecture and cloud foundation.

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  • Diamond crystals form deep within the mantle of the earth when carbon is exposed to extreme pressure and very high temperatures. Volcanic rock formations such as kimberlite or lamproite pipes serve as pathways that convey the fragments of rocks and crystals from the mantle to the surface (see.Figure.1). The diamonds, along with vast quantities of magma, are blasted upward in the course of violent eruptions. Kimberlite pipes, the richest source of mined diamonds, are usually shaped like a carrot and can extend as deep as 1 to 2 kilometers underground.

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  • Chapter 12Is There a Theoretical Limit to Soil Carbon Storage in Old-Growth Forests? A Model Analysis with Contrasting Approaches Apart from the intrinsic worth that nature and forests have due merely to their existence, old-growth forests have always provided a number of additional values through their function as regulators of the water cycle

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  • From the epidemiological data (fixed base line increment per 10 µg/m3 PM10 per 1 million inhabitant) on the one hand and the average exposure level of the population on the other hand, the number of health outcomes can be determined. These calculations may be done for the current exposure to particulate matter as well as for a hypothetical situation without road traffic-related air pollution. The difference between the two results corresponds to the number of morbidity and mortality cases attributable to road traffic-related air pollution.

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  • We measured and tested whether the following variables affect walking (basis: 200m buffer around each child's shortest walking path): number of busy intersections crossed, intersection and street density, total daily vehicle-miles traveled, average vehicle speed along the route, population density, and land use (R Wilson, 2008). Sidewalk coverage data do not exist for Roseville and could not be tested in the model. We refined the model through systematic testing of independent variables as the differ- ence in log-likelihood ratios.

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  • Tham khảo tài liệu 'guide to infectious diseases for schools and day care centers', y tế - sức khoẻ, sức khỏe trẻ em phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Full term infants that are disproportionately small at birth, however, may be the result of short-term insults in the third trimester, for example, that promote weight and muscle loss but spare brain and body length (Gould, 1989). These infants may have the ability to catch up in growth where the environment fulfills health and nutritional needs (Adair, 1999). In industrialized countries, access to intensive care technology influence an infant’s long-term prognosis (Dashe et al 2000), although such technology is not available to the majority of Indonesian women. ...

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  • Paying interest on reserves would seem to be expensive from the Treasury’s point of view. Interest earnings ordinarily transferred by a central bank as tax revenue to the Treasury would be diverted to pay interest on reserves. Moreover, the payment of interest on reserves would induce banks to enlarge substantially the quantity of reserves demanded, greatly enlarging the interest that a central bank would have to pay.

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  • Ouedraogo et al. 2006). Most patients presented with symptoms suspicious for TB; thus, lack of diagnostic sensitivity of health workers is of concern (Wandwalo & Morkve 2000). Afghanistan has the highest TB burden in south Asia (World Health Organization 2007). While health services are expanding and quality improving, gaps in access and deficient quality of some interventions persist. The Ministry of Public Health adopted a Basic Package of Health Services (BPHS) in 2003, which provides standard primary care services for districts covering 77% of the population.

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