scholarly journals Environmental assessment of greenhouse gases' emission in poplar plantation under extreme climate conditions of winter 2019/2020

Topola ◽  
2021 ◽  
pp. 15-19
Author(s):  
Miljan Samardžić ◽  
Zoran Galić ◽  
Saša Orlović ◽  
Milica Kovač ◽  
Irina Andreeva ◽  
...  
Keyword(s):  
Greenhouse Gases ◽  
Greenhouse Gas ◽  
Forest Ecosystems ◽  
Greenhouse Gas Emission ◽  
Global Climate ◽  
Gas Emission ◽  
Extreme Climate Events ◽  
Extreme Climate ◽  
Climate Events ◽  
Emission Of Greenhouse Gases

Global changes, triggered by increased anthropogenic emissions of greenhouse gases, are the main problem of modern ecology. Soil is the main terrestrial reservoir of carbon, in both organic and inorganic forms. Forests are the major asset in carbon cycling and the mitigation of global climate change in the terrestrial ecosystem, because forest ecosystems in a temperate climate area are the major sink of CO2 from the atmosphere. Carbon dioxide emission from the soil is the major component of greenhouse gas emission, as well as the main respiratory flux from most forest ecosystems. In circumstances of changed climate and increased frequency of extreme climate events, soil greenhouse gas emission from forest ecosystems is gaining more and more importance, having in mind that soil temperature is one of the main limitation factors of greenhouse gas emission from the soil. From the results obtained from the experiment it is evident that the unusually warm winter of 2019/20 had as a consequence higher emission of greenhouse gases from all three experimental plots. Differences in emission between plots and between days can be explained by three main factors: soil composition, temperature difference between days of sampling, and soil moisture content. With an increased frequency of extreme climate events, as a consequence of global climate changes, the occurrence of higher winter temperatures is expected to be more frequent in the future, affecting also higher emission of greenhouse gases from the soil.

scholarly journals Energy Valuation Methods for Biofuels in South Florida: Introduction to Life Cycle Assessment and Emergy Approaches

EDIS ◽  
2013 ◽  
Vol 2013 (3) ◽  
Author(s):  
J. Van Treese, II ◽  
Edward A. Hanlon ◽  
N. Y. Amponsah ◽  
J. L. Izursa ◽  
J. C. Capece
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Greenhouse Gases ◽  
Greenhouse Gas ◽  
Greenhouse Gas Emission ◽  
South Florida ◽  
Gas Emission ◽  
Assessment Approach ◽  
Environmental Component ◽  
Soil And Water

This 5-page fact sheet gives an overview of two methods for evaluating energy transformations in biofuels production. The Life Cycle Assessment approach involves measurements affecting greenhouse gases, which can be linked to the energy considerations used in the Emergy Assessment. Although these two methods have their basis in energy or greenhouse gas emission evaluations, their approaches can lead to a reliable judgment regarding a biofuel process. We can use them to evaluate the economic environmental component of a biofuel process, and decide which biofuel processes favor sustainability. The intended audiences of this publication are growers, researchers, students, and any other readers interested in agriculture and ecology. Written by J. Van Treese II, E. A. Hanlon, N. Y. Amponsah, J. L. Izursa, and J. C. Capece, and published by the UF Department of Soil and Water Science, March 2013. http://edis.ifas.ufl.edu/ss579

scholarly journals Seasonality of greenhouse gas emission factors from biomass burning in the Brazilian Cerrado

2020 ◽  
Author(s):  
Roland Vernooij ◽  
Marcos Vinicius Giongo Alves ◽  
Marco Assis Borges ◽  
Máximo Menezes Costa ◽  
Ana Carolina Sena Barradas ◽  
...  
Keyword(s):  
Greenhouse Gases ◽  
Greenhouse Gas ◽  
Biomass Burning ◽  
Large Scale ◽  
Greenhouse Gas Emission ◽  
Emission Factors ◽  
Dry Season ◽  
Total Carbon ◽  
Vegetation Types ◽  
Gas Emission

Abstract. Landscape fires, often referred to as biomass burning (BB), emit substantial amounts of (greenhouse) gases and aerosols into the atmosphere each year. Frequently burning savannas, mostly in Africa, Australia, and South America are responsible for over 60 % of total BB carbon emissions. Compared to many other sources of emissions, fires have a strong seasonality. Previous research has identified the mitigation potential of prescribed fires in savanna ecosystems; by burning early in the dry season when the vegetation has not fully cured, fires are in general patchier and burn less intense. While it is widely accepted that burned area and the total carbon consumed is lower when fires are ignited early in the dry season, little is known about the seasonality of emission factors (EF) of greenhouse gases. This is important because potentially, higher EFs in the early dry season (EDS) could offset some of the carbon benefits of EDS burning. Also, a better understanding of EF seasonality may improve large-scale BB assessments, which to date rely on temporally-static EFs. We used a sampling system mounted on an unmanned aerial vehicle (UAV) and cavity ring-down spectroscopy to estimate CO2, CO, CH4, and N2O EFs in the Estação Ecológica Serra Geral do Tocantins in the Brazilian states of Tocantins and Bahia. The protected area contains all major Cerrado vegetation types found in Brazil, and EDS burning was implemented on a large scale since 2014. We collected and analyzed over 800 smoke samples during the EDS and late dry season (LDS). Averaged over all measurements, the modified combustion efficiency (MCE) was slightly higher in the LDS (0.976 vs. 0.972) and the CH4 and CO EFs were 13 % and 15 % lower in the LDS compared to the EDS. This seasonal effect was larger in more wood-dominated vegetation types. N2O EFs showed a more complex seasonal dependency, with opposite seasonal trends for savannas that were dominated by grasses versus those with abundant shrubs. We found that the N2O EF for the open cerrado was less than half of those reported so far in the BB literature for savannas. This may indicate a substantial overestimation of the contribution of fires in the N2O budget. Overall, our data implies that in this region, seasonal variability in greenhouse gas emission factors may offset only a small fraction of the carbon mitigation gains in fire abatement programs.

Greenhouse Gas Emission, Rainfall and Crop Production Over North-Western India

2018 ◽  
Vol 11 (1) ◽  
pp. 47-61
Author(s):  
Vinay Kumar ◽  
Sudip Jana ◽  
Amit Bhardwaj ◽  
R. Deepa ◽  
Saroj Kumar Sahu ◽  
...  
Keyword(s):  
Greenhouse Gases ◽  
Greenhouse Gas ◽  
Crop Production ◽  
Greenhouse Gas Emission ◽  
Coupled Model ◽  
Western India ◽  
Gas Emission ◽  
Northwestern India ◽  
Increasing Trend ◽  
One Year

Background: This study is based on datasets acquired from multi sources e.g. rain-gauges, satellite, reanalysis and coupled model for the region of Northwestern India. The influence of rainfall on crop production is obvious and direct. With the climate change and global warming, greenhouse gases are also showing an adverse impact on crop production. Greenhouse gases (e.g. CO2, NO2 and CH4) have shown an increasing trend over Northwestern Indian region. In recent years, rainfall has also shown an increasing trend over Northwestern India, while the production of rice and maize are reducing over the region. From eight selected sites, over Northwestern India, where rice and maize productions have reduced by 40%, with an increase in CO2, NO2 and CH4 gas emission by 5% from 1998 to 2011. Results: The correlation from one year to another between rainfall, gas emission and crop production was not very robust throughout the study period, but seemed to be stronger for some years than others. Conclusion: Such trends and crop yield are attributed to rainfall, greenhouse gas emissions and to the climate variability.

GREENHOUSE GAS EMISSION FROM COMBUSTION OF ASSOCIATED PETROLEUM GAS IN RUSSIA

2021 ◽  
pp. 54-61
Author(s):  
N. V. Popov ◽  
◽  
I. L. Govor ◽  
M. L. Gitarskii ◽  
◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Greenhouse Gases ◽  
Greenhouse Gas ◽  
Greenhouse Gas Emission ◽  
Component Composition ◽  
Emission Factors ◽  
Gas Emission ◽  
Associated Petroleum Gas ◽  
Carbon Dioxide Co2

The average weighted long-term component composition of associated petroleum gas burned at the fields in Russia is obtained, where the volume fractions of carbon dioxide (CO2) and methane (CH4) make up 0.8 and 66.4%, respectively. Based on it, the national emission factors of greenhouse gases from the flaring of associated petroleum gas are developed: the values are equal to 2.76 103 t CO2 and 0.0155 103 t CH4 per 1 106 m3 of the gas burnt. The calculations based on the emission factors led to the 37% increase in total equivalent emission of CO2 and CH4 as compared to the calculations based on the IPCC emission factors. The use of the national emission factors increases the reliability of the estimates of greenhouse gas emissions and the evaluation of their impact on climate.

Greenhouse Gas Emission Factor of Scrapped Cable and Wire Recycling Factories

2013 ◽  
Vol 838-841 ◽  
pp. 2811-2817
Author(s):  
Pu Chang ◽  
Mei Fang Lu ◽  
Jim Jui Min Lin
Keyword(s):  
Greenhouse Gases ◽  
Greenhouse Gas ◽  
Emission Factor ◽  
Greenhouse Gas Emission ◽  
Electricity Consumption ◽  
Mechanical Method ◽  
Gas Emission ◽  
Processing Plants ◽  
Annual Carbon ◽  
And Control

Carbon footprint of three scrapped cable and wire recycling processing plants was analyzed by examining the annual carbon emission and trend for 2009-2011. Among the six greenhouse gases (CO2, CH4, N2O, SF6, HFCs, and PFCs), the annual emission of CO2 was the highest (>95%), while remaining gases only accounted for less than 5% of the total greenhouse gas emission. When analyzing the collected data based on different frontier categories, Category II (greenhouse gas emission indirect caused by electricity consumption) had the highest emission proportion (>57%). It is because the machines used for the physic-mechanical processing procedure require a lot of electricity. In order to do emission inventory accurately and control the electricity consumption, laws or regulations should stimulate electricity consumption to be recorded and monitored separately for each operation permit. It is also recommended to record and monitor electricity consumption of administration area and the manufacturing/processing area separately. Results of this study revealed that the average emission factor for processing recycled cables and wires using a physic-mechanical method was 0.0474±0.0162 tonnes of CO2e per tonne of material processed. If the calculation was based on the amount of products generated, the EF of average greenhouse gases was 0.1613±0.0589 tonnes of CO2e per tonne of plastics, 0.0766±0.0278 tonnes of CO2e per tonne of copper, 1.7891±1.4572 tonnes of CO2e per tonne of aluminum, and 2.1030±1.6937 tonnes of CO2e per tonne of iron.

scholarly journals Methodological Study on Voluntary Greenhouse Gases Reduction for Shore Power System

2019 ◽  
Vol 118 ◽  
pp. 02006
Author(s):  
Leilei Liu ◽  
Xu Guo ◽  
Jian Ding ◽  
Hongliang Wang
Keyword(s):  
Power System ◽  
Greenhouse Gases ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Emission Reduction ◽  
Greenhouse Gas Emission ◽  
Gas Emission ◽  
Gas Emissions ◽  
Carbon Emissions Trading ◽  
Greenhouse Gas Emission Reduction

Voluntary emission reduction of greenhouse gases is conducive to reducing carbon dioxide (CO2) emissions and fostering a carbon trading market. Voluntary greenhouse gas emission reduction methodologies can be used to determine project baselines, demonstrate additionality, calculate emission reductions, and develop monitoring plans. Marine fossil fuel combustion is an important source of greenhouse gas emissions in port. Through the implementation of marine shore power system, it is possible to replace fuel consumption with electricity and significantly reduce greenhouse gas emissions during berthing. Through the analysis and study on shore power system, the methodology of voluntary greenhouse gas emission reduction for shore power system is formed, which is conducive to promoting the participation in carbon emissions trading and promoting the promotion and use of shore power system.

Emission of greenhouse gases during composting of deep litter from pig production – effect of straw content

2000 ◽  
Vol 134 (3) ◽  
pp. 327-335 ◽  
Author(s):  
S. G. SOMMER ◽  
H. B. MØLLER
Keyword(s):  
Greenhouse Gases ◽  
Greenhouse Gas Emission ◽  
Production Systems ◽  
Animal Manure ◽  
High Density ◽  
High Rate ◽  
Total Carbon ◽  
Gas Emission ◽  
Period Effects ◽  
Emission Of Greenhouse Gases

Of the anthropogenic greenhouse gas emission in Denmark animal manure contributes an estimated 40% of methane (CH4) and 20% of nitrous oxide (N2O). Livestock production systems undergo changes for the purpose of increasing animal welfare, and such changes often include increasing the amounts of bedding manure. Emission of greenhouse gases from composting pig deep litter was studied during a 4-month period. Effects of increasing the amount of straw used in deep litter (reducing litter density) were included in the study. Methane was produced at a high rate in the centre of the heap at high density during the thermophilic phase of composting, and CH4 emission was only measured during this phase. In this treatment N2O was also produced in the centre both initially and after the temperature of the compost had dropped to below 45 °C. Emissions of N2O were only significant in the low temperature phases. Production of N2O was probably restricted to the surface layers during the thermophilic phase of composting. Total carbon dioxide (CO2) emissions were 7·37 and 0·09 kg C/t fresh weight from the heaps with bulk densities of 0·44 and 0·23 kg/l, respectively. Methane emission from the high density compost heap was 191 g C/t and N2O emission was 58 g N/t. Emissions of CH4 and N2O from the low density heap were not detected. The greenhouse effect of gas emission from the high density compost heap was calculated by multiplying the climate force efficiencies and the cumulated gas emission. This calculation showed that CH4 contributes almost as much to the global warming potential as CO2, and N2O contributed twice as much as CO2.

An overview of the international context for greenhouse gas reductions

2008 ◽  
Vol 48 (2) ◽  
pp. 251
Author(s):  
Helen Plume ◽  
Roger Lincoln ◽  
Hayden Montgomery
Keyword(s):  
Greenhouse Gases ◽  
Greenhouse Gas ◽  
Kyoto Protocol ◽  
Greenhouse Gas Emission ◽  
Vital Role ◽  
Gas Emission ◽  
International Context ◽  
Agriculture Sector ◽  
Commitment Period ◽  
First Commitment Period

The international context for addressing greenhouse gases, including those from agriculture, is presented. The Kyoto Protocol rules are set for the first commitment period from 2008 to 2012. During this period, industrialised country parties (countries that have both signed and ratified the agreement) are to collectively reduce total greenhouse gas emissions by 5% below 1990 emission levels. Arrangements for a post-2012 agreement are currently being discussed. Science plays a vital role in identifying options for greenhouse gas emission reductions in the agriculture sector.

scholarly journals Assessment of greenhouse gas emissions from the pig production in Lam Dong

2017 ◽  
Vol 1 (M2) ◽  
pp. 5-13
Author(s):  
Thuan Thi Thanh Nguyen ◽  
Anh Thuy Cao ◽  
Huy Quang Le ◽  
Dung Thi Bao Nguyen
Keyword(s):  
Greenhouse Gases ◽  
Greenhouse Gas ◽  
Management System ◽  
Emission Factor ◽  
Greenhouse Gas Emission ◽  
Manure Management ◽  
Gas Emission ◽  
Current Management ◽  
Pig Production ◽  
Pig Farming

Applying the methodology of the Intergovernmental Panel on Climate Change (IPCC) in calculating the greenhouse gas emission from pig farming operations at Lam Dong province in 2015, calculated results show that the application of swine manure management solutions can significantly reduce emissions of greenhouse gases into the environment. Using of energy in pig farming operations around 0.0007 tCO2 emissions/ head/ month, the digestion of pig feed create a greenhouse gas emission at around 152.96 tCO2/month with emission factor of 0.0029 tCO2/head / month. Greenhouse gases emitted from the current manure management system (manure are treated by various forms and the rest will directly disposed into the environment) into the atmosphere is around 400.08tCO2/month, respectively a pig emitted about 0.0076 tCO2/head/month. The total emission factor during pig production under the scenarios: (1) manure are directly discharged into the environment, (2) manure are managed by current management system, (3) manure are managed by current management systems with the gas generated from biogas recovery is converted into electrical energy and (4) manure are managed by Biogas recovery system, respectively 0.0593; 0.0112; 0.0101; 0.0077 tCO2/ head/month.

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