Not only soil organic matter; effect of alternative fuels adaptation and increasing soil carbon on soil greenhouse gases emissions and atmospheric carbon balance

Ilya Gelfand, Ben-Gurion University of the Negev

27 במרץ 2023, 15:00 
בניין פורטר-אודיטוריום 
סמינר חוגי

Please join us for our next Monday departmental seminar on the 27th of March from 15:00 to 16:00 at the Porter Auditorium

 

Not only soil organic matter; effect of alternative fuels adaptation and increasing soil carbon on soil greenhouse gases emissions and atmospheric carbon balance

 

Ilya Gelfand, Ben-Gurion University of the Negev

 

Abstract

International efforts to reduce atmospheric concentration of CO2, like the "4 per 1000" initiative that aims to increase soil organic matter (SOM) world-wide by 4 permille; or adaptation of alternative fuels, may slow down atmospheric CO2 concentration rise. However, the effect SOM increase will have on the overall greenhouse gases (GHG) balance in the atmosphere is uncertain. Firstly, adaptation of alternative fuels can lead to increasing emissions of other GHGs due to growth in fertilizer use and land management. Furthermore, use of biofuel or electrically driven cars raises questions of C balance of fuel production and the fate of related CO2 emissions. Secondly, soil fertility has a potential to affect soil GHG emissions. Specifically, emissions of nitrous oxide (N2O), the third most patient GHG and the primary cause of the ozone depletion in the stratosphere. While alternative fuel adaptation is manageable by means of new policies; the effect of increasing soil fertility (i.e. SOM) on soil GHG emissions most likely cannot be managed. Higher soil N2O emissions due to more SOM are a plausible tradeoff which needs to be studied. This is because the response of soil N2O emissions to the SOM is hard to predict or anticipate based on current understanding of the relationships between soil fertility and N2O emissions

 

:In my presentation I will discuss

 a) Effects of alternative fuels on CO2 emissions offset, and overall C balance of the transportation

b) Will show how different soil texture and fertility is affecting soil N2O emissions in agricultural and natural ecosystems

While the effect of biofuels on overall C balance of transportation is most likely favorable, i.e. overall CO2 emissions reduction. The effect of increasing soil fertility on soil N2O emissions is less certain and soil management and ecosystem type depended

 

BIO

B.Sc. – The Hebrew University of Jerusalem. Dual major: Biology + Environmental Sciences

M.Ag.Sc. – The Hebrew University of Jerusalem, Faculty of Agriculture. Microbiology (with Jaap Van Rijn)

Ph.D. – The Weizmann Institute of Sciences. Ecosystem Ecology (with Dan Yakir)

:Main research interests (past and present)

Environmental and climatic effects of widespread use of renewable energy. Climatic effects of land-use change. Energy and nutrient balances of agriculture. Effects of land use and management on soil green-house gases emissions. Biogeochemistry of desert ecosystems

 

Alon Shepon

The Department of Environmental Studies

The Porter School of the Environment and Earth Science

Tel Aviv University | website

 

The Israeli Forum for Sustainable Nutrition

http://www.ifsn.org.il/

 

 

 

 

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