scholarly journals Soil greenhouse gases emissions reduce the benefit of mangrove plant to mitigating atmospheric warming effect

2016 ◽  
Author(s):  
Guangcheng Chen ◽  
Bin Chen ◽  
Dan Yu ◽  
Yong Ye ◽  
Nora F. Y. Tam ◽  
...  
Keyword(s):  
Greenhouse Gases ◽  
Co2 Sequestration ◽  
Mangrove Ecosystem ◽  
Mangrove Plant ◽  
Gas Emissions ◽  
Greenhouse Gases Emissions ◽  
Mangrove Wetland ◽  
Mangrove Soils ◽  
Atmospheric Warming

Abstract. Mangrove soils have been recognized as sources of atmospheric greenhouse gases but the atmospheric fluxes are poorly characterized, and their adverse warming effect has scarcely been considered with respect to the role of mangrove wetlands in mitigating global warming. The present study balanced the warming effect of soil greenhouse gas emissions with plant carbon dioxide (CO2) sequestration rate in a highly productive mangrove wetland in South China to assess the role of mangrove wetland in mitigating atmospheric warming. The results showed that mangrove soils were significant sources of greenhouse gases, and the fluxes were significantly higher in summer and also different among mangrove sites. Gases fluxes were positively correlated with the soil organic carbon, total nitrogen, and NH4+-N contents. The mangrove plant was able to sequester a considerable amount of atmospheric CO2 at 5930 g CO2 m−2 yr−1 in the present study, and the ecosystem was source of methane (CH4) and nitrous oxide (N2O) gases but more intense CO2 sink. However, the warming effect of soil gas emissions, equivalent to 1222 g CO2 m−2 yr−1, was able to offset a large proportion (~22 %) of plant CO2 sequestration, and the two trace gases comprised ~24 % of the total warming effect. We therefore propose the assessment of the direct mitigation of atmospheric warming by mangrove ecosystem that should take into account both soil greenhouse gases emissions and plant CO2 sequestration.

scholarly journals THE SHARE OF AGRICULTURE IN GREENHOUSE GAS EMISSIONS IN EUROPEAN UNION COUNTRIES – VALUATION

2018 ◽  
Author(s):  
Konrad PRANDECKI ◽  
Edyta GAJOS
Keyword(s):  
European Union ◽  
Greenhouse Gases ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
International Comparisons ◽  
Modern World ◽  
The European Union ◽  
Gas Emissions ◽  
Greenhouse Gases Emissions ◽  
The Eu

Reducing greenhouse gases emissions is one of the major environmental challenges of the modern world. The European Union (EU) has set itself ambitious reduction targets. Proper monitoring of emissions and its valuation is necessary to achieve this goal. In addition, valuation (in monetary terms) will help to raise awareness of the climate change costs among society. The aim of this article is to present international comparisons within the EU covering the monitoring and valuation of aggregate emissions of selected greenhouse gases in general and in agriculture. The study uses Eurostat data for the years 2007-2015. The evaluation was based on the average annual price of carbon dioxide allowances under the European Union Emissions Trading System. Leipzig stock market data were used to determine the price. The study compares the total greenhouse gas emissions and its value in different EU countries. These results show that the largest emitters in the EU are Germany, United Kingdom, France. A comparison of per capita and per GDP emissions results in an almost reversal of this order. The share of agriculture in greenhouse gas emissions was 11% in 2015 and ranged between countries from 3% (Malta) do 32% (Ireland). The results show also that the decline in value is greater than the decrease in emissions. This is due to the dramatic change in the price of allowances. The decrease in quantity of agricultural emission was 0,5%, whilst the decrease in value was 55,5% between years 2008 and 2015.

Ecological specificities of the interaction between animal breeding and climate changes, caused by greenhouse gas emissions

2017 ◽  
Vol 4 (3) ◽  
pp. 62-72
Author(s):  
O. Zhukorsky ◽  
O. Nykyforuk ◽  
N. Boltyk
Keyword(s):  
Greenhouse Gases ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Climatic Conditions ◽  
Animal Breeding ◽  
Gas Emissions ◽  
Climate Conditions ◽  
Emissions Inventory ◽  
Theoretical Substantiation ◽  
Global Problems

Aim. Proper development of animal breeding in the conditions of current global problems and the decrease of anthropogenic burden on environment due to greenhouse gas emissions, caused by animal breeding activity, require the study of interaction processes between animal breeding and external climatic conditions. Methods. The theoretical substantiation of the problem was performed based on scientifi c literature, statistical informa- tion of the UN Food and Agriculture Organization and the data of the National greenhouse gas emissions inventory in Ukraine. Theoretically possible emissions of greenhouse gases into atmosphere due to animal breeding in Ukraine and specifi c farms are calculated by the international methods using the statistical infor- mation about animal breeding in Ukraine and the economic-technological information of the activity of the investigated farms. Results. The interaction between the animal breeding production and weather-and-climate conditions of environment was analyzed. Possible vectors of activity for the industry, which promote global warming and negative processes, related to it, were determined. The main factors, affecting the formation of greenhouse gases from the activity of enterprises, aimed at animal breeding production, were characterized. Literature data, statistical data and calculations were used to analyze the role of animal breeding in the green- house gas emissions in global and national framework as well as at the level of specifi c farms with the consid- eration of individual specifi cities of these farms. Conclusions. Current global problems require clear balance between constant development of sustainable animal breeding and the decrease of the carbon footprint due to the activity of animal breeding.

scholarly journals Greenhouse gases emissions in rivers of the Tibetan Plateau

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Bin Qu ◽  
Kelly Sue Aho ◽  
Chaoliu Li ◽  
Shichang Kang ◽  
Mika Sillanpää ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Greenhouse Gases ◽  
The Tibetan Plateau ◽  
Greenhouse Gases Emissions

Greenhouse gases emissions in liquified natural gas as a marine fuel: Life cycle analysis and reduction potential

2021 ◽  
Author(s):  
Ahmad Al‐Douri ◽  
Abdulrahman S. Alsuhaibani ◽  
Margaux Moore ◽  
Rasmus Bach Nielsen ◽  
Amro A. El‐Baz ◽  
...  
Keyword(s):  
Life Cycle ◽  
Natural Gas ◽  
Greenhouse Gases ◽  
Life Cycle Analysis ◽  
Reduction Potential ◽  
Marine Fuel ◽  
Greenhouse Gases Emissions

scholarly journals Spatial and Temporal Variation in Microbial Diversity and Community Structure in a Contaminated Mangrove Wetland

2020 ◽  
Vol 10 (17) ◽  
pp. 5850
Author(s):  
Jiaojiao Ma ◽  
Ting Zhou ◽  
Chunyu Xu ◽  
Dawen Shen ◽  
Songjun Xu ◽  
...  
Keyword(s):  
Community Structure ◽  
Spatial Variation ◽  
Temporal Variation ◽  
Bacterial Diversity ◽  
Diversity Index ◽  
Total Carbon ◽  
Spatial And Temporal Variation ◽  
Rrna Gene ◽  
Mangrove Wetland ◽  
Mangrove Soils

Field and laboratory investigations were conducted to characterize bacterial diversity and community structure in a badly contaminated mangrove wetland adjacent to the metropolitan area of a megacity in subtropical China. Next-generation sequencing technique was used for sequencing the V4–V5 region of the 16s rRNA gene on the Illumina system. Collectively, Proteobacteria, Chloroflexi, Planctomycetes, Actinobacteria and Bacteroidetes were the predominant phyla identified in the investigated soils. A significant spatial variation in bacterial diversity and community structure was observed for the investigated mangrove soils. Heavy metal pollution played a key role in reducing the bacterial diversity. The spatial variation in soil-borne heavy metals shaped the spatial variation in bacterial diversity and community structure in the study area. Other environmental factors such as total carbon and total nitrogen in the soils that are affected by seasonal change in temperature could also influence the bacterial abundance, diversity and community structure though the temporal variation was relatively weaker, as compared to spatial variation. The bacterial diversity index was lower in the investigated site than in the comparable reference site with less contaminated status. The community structure in mangrove soils at the current study site was, to a remarkable extent, different from those in the tropical mangrove wetlands around the world.

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