Wyniki wyszukiwania

Autor	Jerzy Bieńkowski, Radosław Dąbrowicz, Małgorzata Holka, Janusz Jankowiak
Tytuł	Carbon Footprint of Beef Cattle in a Conventional Production System: a Case Study of a Large-Area Farming Enterprise in the Wielkopolska Region
Title	Carbon Footprint of Beef Cattle in a Conventional Production System: a Case Study of a Large-Area Farming Enterprise in the Wielkopolska Region
Słowa kluczowe	carbon footprint, beef production, emission of greenhouse gases, life cycle assessment, agriculture
Key words	carbon footprint, beef production, emission of greenhouse gases, life cycle assessment, agriculture
Abstrakt	Animal production is a significant source of greenhouse gas (GHG) emissions. One of the major challenges in sustainable management is to mitigate the effects of climate change by reducing GHG emissions. The diversity of animal production systems and accompanying diversification of technological processes, mean that specific production effects can be obtained at different levels of GHG emissions. The aim of the study was to determine the carbon footprint (CF) of beef cattle grown in a conventional system (i.e. indoor confinement). The research was carried out on the beef cattle farm belonging to a large-area enterprise, Długie Stare Ltd. The beef cattle production system consisted of the following subsystems: a basic breeding herd (consisting of suckler cows, replacement heifers and calves up to 6.5 months), breeding heifers, breeding bulls and fattening bulls. The method of life cycle analysis (LCA) in the stages from "cradle-to-farmgate" was used to assess the GHG emissions associated with the production of beef cattle. The average CF in the entire beef cattle production system was 25.43 kg of CO2 kg-1 of live weight of marketed cattle, while in the individual subsystems of basic breeding herd, breeding heifers, breeding bulls and fattening bulls, the CF (after GHG allocation) was: 11.0 kg CO2 eq., 34.30 kg CO2 eq., 27.32 and 25.40 kg CO2 eq., respectively. GHG emissions associated with young calves staying in the cow-calf pairs until weaning (in the period from 0-6.5 months), had a decisive influence on the final CF in each of the subsystems of beef cattle production. The second important factor directly affecting the CF was GHG emissions related to methane (CH4) enteric fermentation and manure management. Knowledge of factors affecting the CF structure allows better identification of critical areas in production processes with high GHG emission potential. Information on the CF of beef cattle and beef meat responds to a wider societal demand for the ecological characteristics of market products, which ultimately contributes to improving their market competitiveness.
Abstract	Animal production is a significant source of greenhouse gas (GHG) emissions. One of the major challenges in sustainable management is to mitigate the effects of climate change by reducing GHG emissions. The diversity of animal production systems and accompanying diversification of technological processes, mean that specific production effects can be obtained at different levels of GHG emissions. The aim of the study was to determine the carbon footprint (CF) of beef cattle grown in a conventional system (i.e. indoor confinement). The research was carried out on the beef cattle farm belonging to a large-area enterprise, Długie Stare Ltd. The beef cattle production system consisted of the following subsystems: a basic breeding herd (consisting of suckler cows, replacement heifers and calves up to 6.5 months), breeding heifers, breeding bulls and fattening bulls. The method of life cycle analysis (LCA) in the stages from "cradle-to-farmgate" was used to assess the GHG emissions associated with the production of beef cattle. The average CF in the entire beef cattle production system was 25.43 kg of CO2 kg-1 of live weight of marketed cattle, while in the individual subsystems of basic breeding herd, breeding heifers, breeding bulls and fattening bulls, the CF (after GHG allocation) was: 11.0 kg CO2 eq., 34.30 kg CO2 eq., 27.32 and 25.40 kg CO2 eq., respectively. GHG emissions associated with young calves staying in the cow-calf pairs until weaning (in the period from 0-6.5 months), had a decisive influence on the final CF in each of the subsystems of beef cattle production. The second important factor directly affecting the CF was GHG emissions related to methane (CH4) enteric fermentation and manure management. Knowledge of factors affecting the CF structure allows better identification of critical areas in production processes with high GHG emission potential. Information on the CF of beef cattle and beef meat responds to a wider societal demand for the ecological characteristics of market products, which ultimately contributes to improving their market competitiveness.
Cytowanie	Bieńkowski J., Dąbrowicz R., Holka M., Jankowiak J. (2018) Carbon Footprint of Beef Cattle in a Conventional Production System: a Case Study of a Large-Area Farming Enterprise in the Wielkopolska Region.Zeszyty Naukowe SGGW w Warszawie - Problemy Rolnictwa Światowego, t. 18(33), z. 3: 23-35
HTML	wersja html
Pełny tekst	PRS_2018_T18(33)_n3_s23.pdf

Autor	Antoni Faber, Zuzanna Jarosz
Tytuł	Modelowanie bilansu węgla organicznego w glebie oraz emisji gazów cieplarnianych w skali regionalnej oraz w Polsce
Title	Modeling of Soil Organic Carbon Balance and Greenhouse Gas Emissions on a Regional Scale and in Poland
Słowa kluczowe	gleba, węgiel organiczny, sekwestracja, gazy cieplarniane
Key words	soil, organic carbon, sequestration, greenhouse gases
Abstrakt	Celem pracy były symulacje uproszczonego bilansu węgla oraz pochłaniania i emisji gazów cieplarnianych (CO2, CH4, N2O) dla scharakteryzowania potencjału mitygacji zmian klimatu w rolniczym użytkowaniu gruntów ornych. Symulacje wykonywano przy użyciu modelu DNDC dla województw i Polski z użyciem dwudziestoletnich serii danych meteorologicznych. Stwierdzono, że system uprawy płużnej ze zbiorem resztek pożniwnych (a) powodować będzie w Polsce emisję netto tych gazów wynoszącą 0,203 t CO2 ekw. ∙ ha-1 ∙ r-1. Natomiast system uprawy uproszczonej z pozostawieniem na polu resztek pożniwnych (b) oraz system uprawy płużnej z regularnym stosowaniem obornika i zbiorem resztek pożniwnych (c) pochłaniać będą CO2 w ilościach wynoszących odpowiednio: 1,225 i 0,172 t CO2 ekw. ∙ ha-1 ∙ r-1. Uzyskane wyniki sugerują, że w perspektywie średnioterminowej (20 lat), badane systemy uprawy mogą być uznane za praktyki mitygujące zmiany klimatu. Zastosowanie systemów uprawy w pożądanej proporcji w stosunku do areału gruntów ornych w Polsce mogłoby pozwolić na średnie pochłanianie gazów cieplarnianych rzędu 0,556 t CO2 ekw.∙ha 1∙r-1.
Abstract	The aim of the work was simulations of soil organic carbon balances as well as absorption and emission of greenhouse gases (CO2, CH4, N2O) to characterize the mitigation potential of climate change in agricultural use of arable land. Simulations were performed using the DNDC model for voivodships and Poland using a twenty-year series of meteorological data. It was found that the plow cultivation system with the harvest residue (a) will cause in Poland a net emission of these gases amounting to 0.203 t CO2 eq∙ha-1∙y-1. On the other hand, the reduced tillage system leaving crop residues on the field (b) and the tillage system with the regular application of manure and harvest residues (c) will absorb CO2 in amounts: 1.225 and 0.172 t CO2 eq∙ha-1∙y-1 respectively. The obtained results suggest that in the medium-term (20 years) the studied cultivation systems may be recognized as practices mitigating climate change. The use of cultivation systems in the desired proportion in relation to the area of arable land in Poland could give an average greenhouse gas absorption of 0.556 t CO2 eq∙ha 1∙y 1.
Cytowanie	Faber A., Jarosz Z. (2018) Modelowanie bilansu węgla organicznego w glebie oraz emisji gazów cieplarnianych w skali regionalnej oraz w Polsce.Zeszyty Naukowe SGGW w Warszawie - Problemy Rolnictwa Światowego, t. 18(33), z. 3: 102-112
HTML	wersja html
Pełny tekst	PRS_2018_T18(33)_n3_s102.pdf

Autor	Mirosława Witkowska-Dąbrowska
Tytuł	Zmiany w wielkości emisji gazów cieplarnianych i amoniaku do powietrza z działalności rolniczej w Polsce i UE – analizy z wykorzystaniem wskaźników zrównoważonego rozwoju
Title	Changes in the Volume of Air Emissions from Gases and Selected Pollutants Originating from Agricultural Production in Poland and in the EU – Analyses Using Sustainable Development Indicators
Słowa kluczowe	emisje do powietrza, działalność rolnicza, emisja gazów cieplarnianych i amoniaku
Key words	atmospheric air emissions, agricultural activity, emission guidelines and ammonia
Abstrakt	Celem badań była analiza zmian w wielkości emisji gazów cieplarnianych i amoniaku z rolnictwa w Polsce I Unii Europejskiej. W części teoretycznej odniesiono się do podjętych działań międzynarodowych dotyczących redukcji emisji. Badania oparto głownie o dane statystyczne GUS i Eurostat. W wyniku przeprowadzonych badań stwierdzono, że rolnictwo jest głównym źródłem emisji amoniaku w UE i w Polsce. Również nie bez znaczenia jest rola rolnictwa w emisji gazów cieplarnianych. Stwierdzono wahania w dynamice emisji gazów cieplarnianych zarówno Polsce jak i UE. W badanych latach odnotowano niewielki wzrost udziału rolnictwa w emisji gazów cieplarnianych.
Abstract	The research aim was to analyse changes in the volume of greenhouse gases and ammonia produced by agriculture in Poland, against the background of the European Union, using sustainable development indicators.. The study relied mainly on statistical data from the Polish Central Statistical Office and Eurostat. Agriculture was found to be the major source of ammonia emissions in the EU and Poland. Also, the role of agriculture in emission of greenhouse gases is significant. Fluctuations in the dynamics of GHG emissions were noted in the EU and in Poland. Over the analysed time, a small increase in the share of the emission of GHG, especially methane, from farming was observed.
Cytowanie	Witkowska-Dąbrowska M. (2018) Zmiany w wielkości emisji gazów cieplarnianych i amoniaku do powietrza z działalności rolniczej w Polsce i UE – analizy z wykorzystaniem wskaźników zrównoważonego rozwoju.Zeszyty Naukowe SGGW w Warszawie - Problemy Rolnictwa Światowego, t. 18(33), z. 2: 303-314
HTML	wersja html
Pełny tekst	PRS_2018_T18(33)_n2_s303.pdf