Global carbon cycle

Part 2 book "An introduction to environmental chemistry" includes content: The chemistry of continental waters, the oceans, global change, the carbon cycle, the sulphur cycle, persistent organic pollutants, further reading, internet search keywords.

156p muasambanhan10 06-04-2024 2 0   Download

Ebook "Advanced biofuels and bioproducts (Volume 1)" are handily organized into the following 8 sections: introduction and Brazil's biofuel success; smokeless biomass pyrolysis for advanced biofuels production and global biochar carbon sequestration; cellulosic biofuels; photobiological production of advanced biofuels with synthetic biology; lipids-based biodiesels; life-cycle energy and economics analysis; high-value algal products and biomethane; electrofuels;...

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Ebook "Oceanography and marine biology: An annual review (Volume 47)" remains one of the most cited sources in marine science and oceanography. The ever increasing interest in work in oceanography and marine biology and its relevance to global environmental issues, especially global climate change and its impacts, creates a demand for authoritative reviews summarizing the results of recent research. For more than 50 years, OMBAR has been an essential reference for research workers and students in all fields of marine science.

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Ebook "Recarbonization of the biosphere: Ecosystems and the global carbon cycle" increasing amounts of carbon dioxide (CO2) are added to the atmosphere by fossil fuel combustion but the biosphere is a potential C sink. Thus, a comprehensive understanding of C cycling in the biosphere is crucial for identifying and managing biospheric C sinks. Ecosystems with large C stocks which must be protected and sustainably managed are wetlands, peatlands, tropical rainforests, tropical savannas, grasslands, degraded/desertified lands, agricultural lands, and urban lands.

577p duongthandue0501 28-02-2024 3 1   Download

Ebook "Carbon and nitrogen in the terrestrial environment" provides an integrated and wholesome view of the C and N cycling and interrelationships between different aspects in terrestrial ecosystems. Highlights issues related to C and N management in different ecosystems and their implications for the environment and global climate change, and the approaches to mitigate emission of greenhouse gases.

434p tachieuhoa 28-01-2024 6 2   Download

In ebook "Carbon sequestration in urban ecosystems" Urbanization drastically alters the ecosystems structure and functions, disrupts cycling of C and other elements along with water. It alters the energy balance and influences climate at local, regional and global scales. Judicious planning and effective management can enhance C pool in urban ecosystems, and off-set some of the anthropogenic emissions. Principal components with regards to C sequestration include home lawns and turfs, urban forests, green roofs, park and recreational/sports facilities and urban agriculture.

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Soil organic carbon (SOC) and Soil inorganic carbon (SIC) are important as it determine ecosystem and agro-ecosystem functions influencing soil structure, soil fertility, water holding capacity, cation exchange capacity and other soil characteristics. It is also of global importance because of its role in the global carbon cycle(GCC). The understanding of soil carbon in terms of its amount and quality is essential to sustain the quality and productivity of soils.

11p caygaocaolon4 04-04-2020 13 0   Download

Nitrogen is one of the most important major limiting nutrients for most crops and other plant species. Nitrogen fertilizers affect the balance of the global nitrogen cycle, pollute groundwater and increase atmospheric nitrous oxide (N2O), a potent "greenhouse" gas. The production of nitrogen fertilizer by industrial nitrogen fixation not only depletes our finite reserves of fossil fuels but also generates large quantities of carbon dioxide, contributing to global warming

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The C4 photosynthetic carbon cycle can be explained as the elaborated addition to the C3 photosynthetic pathway. It is a unique series of biochemical, anatomical and regulatory gene characteristics that concentrate CO2around the carboxylating enzyme Rubisco, thereby increasing photosynthetic efficiency during high rates of photorespiration. The C4 photosynthetic pathway has evolved as an adaptation to high light intensities, high temperatures and dryness, therefore in the warmer climates of the tropical and subtropical dominating the grassland floras and biomass production.

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Soil organic carbon (SOC) dynamics in croplands is a crucial component of global carbon (C) cycle. Depending on local environmental conditions and management practices, typical C input is generally required to reduce or reverse C loss in agricultural soils. Changes in the soil organic carbon (SOC) stock are determined by the balance between the carbon input from organic materials and the output from the decomposition of soil C. The fate of SOC in cropland soils plays a significant role in both sustainable agricultural production and climate change mitigation.

21p quenchua2 15-12-2019 19 2   Download

The relentlessly increase of atmospheric carbon dioxide (CO2) concentration due to release from different sources leads to global warming and climate change which are a cause for great concern demanding in-depth research on CO2 emission from soil under different forest cover. Forest cover can reverse the increasing CO2 in the atmosphere, thus, contributes to mitigate climate change. Forest stored about half of the organic carbon (C) contained in terrestrial ecosystems. The role of forests has a great impact on the global biogeochemical cycles and in particular, the carbon cycle.

8p cothumenhmong1 11-12-2019 21 0   Download

Climate change influences composite set of measurable physical, chemical and biological soil properties attributes which relate to functional soil processes. Climate change impacts soil chemical, physical and biological functions through a range of predicted global change drivers such as rising atmospheric carbon dioxide (CO2) levels, elevated temperature, altered precipitation (rainfall) and atmospheric nitrogen (N) deposition (French et al., 2009).

11p cothumenhmong1 08-12-2019 27 1   Download

Soil organic carbon (SOC) content is key component of the global carbon (C) cycle which is highly variable with respect to space and time. The main objective of this study was to provide an assessment of soil organic carbon (SOC) stock variability for Uttarakhand state. The other objective of this study was to evaluate the performance of different pedotransfer functions for reliable assessment of bulk density. Soil Resource Mapping for Uttarakhand state was conducted on 1:50,000 scale with the help of Satellite imagery (LISS III) along with exhaustive ground truthing through soil surveys.

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Diatoms represent an important class of aquatic phototrophs. They are not only one of the major contributors to global carbon fixation, but they also play a key role in the biogeochemical cycling of silica.

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Soil carbon (C) dynamics is an important aspect of the global C cycle. Soils can be a sink or source for atmospheric CO2 depending upon management. Tallgrass prairie and wheat (Triticum aestivum L.) are 2 dominant ecosystems in the Great Plains.

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Atmospheric levels of CO2 have risen significantly from preindustrial levels of 280 parts per million (ppm) to present levels of 384 ppm (Tans, 2008). Evidence suggests the observed rise in atmospheric CO2 levels is the result of expanded use of fossil fuels for energy. Predictions of increased global energy use during this century indicate a continued increase in carbon emissions (EIA, 2007) and rising concentrations of CO2 in the atmosphere unless major changes are made in the way energy is produced and used; in particular, how carbon is managed (Socolow et al.

40p bin_pham 06-02-2013 38 4   Download

This document should be of interest to a broad audience interested in reducing greenhouse gas (GHG) emissions to the atmosphere. It was developed for regulatory organizations, project developers, and national and state policymakers to increase awareness of existing and developing monitoring, verification, and accounting (MVA) techniques. Carbon dioxide (CO2) sinks are a natural part of the carbon cycle; however, natural terrestrial sinks are not sufficient to absorb all the CO2 emitted to the atmosphere each year.

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The oceans cover over 70% of our planet's surface. Their physical, chemical and biological properties form the basis of the essential controls that facilitate life on Earth. Current concerns such as global climate change, pollution of the world's oceans, declining fish stocks, and the recovery of inorganic and organic chemicals and pharmaceuticals from the oceans call for greater knowledge of this complex medium. This volume brings together a number of experts in marine science and technology to provide a wide-ranging examination of some issues of major environmental impact....

105p japet75 30-01-2013 71 7   Download

This textbook covers Plant Ecology from the molecular to the global level.

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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.

358p phoebe75 01-02-2013 67 14   Download