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1

Sources of nitrous oxide emission in agricultural sector in Poland

100%
Bialek J.
Annals of Warsaw University of Life Sciences - SGGW. Agriculture
|
2009
|
nr 53 Agric.Forest Eng.
79-84
2

Measurements of concentration of the trace gases active in the greenhouse effect

100%
Lasa J., Drozdowicz B., Sliwka I., Rosiek J.
Geographia Polonica
|
1994
|
tom 62
3

Application of the cold stamping method for rapeseed oil extraction

84%
Wcislo G.
Teka Komisji Motoryzacji i Energetyki Rolnictwa
|
2006
|
tom 06
4

Application of semiconductor nanoparticles in power industry

84%
Nawrocka A., Grundas S.
Teka Komisji Motoryzacji i Energetyki Rolnictwa
|
2010
|
tom 10
5

Do climate changes increase the threat to crops by pathogens, weeds and pests?

84%
Lipa J. J.
Geographia Polonica
|
1999
|
tom 72
|
nr 2
6

The emission, absorption and retention of greenhouse gases [GHG] in Polish agriculture

84%
Nalborczyk E., Pietkiewicz S., Loboda T.
Geographia Polonica
|
1999
|
tom 72
|
nr 2
7

Gas exchange of cereals under short term CO2 enrichment

84%
Loboda T., Pietkiewicz S., Lachowicz A.
Fragmenta Agronomica
|
1995
|
tom 12
|
nr 2
8

Zmiany klimatu a rolnictwo

67%
Sowinski P.
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
|
1992
|
nr 183
21-25
9

Zmiany klimatu Ziemi - konsekwencje dla rolnictwa i ochrony roslin

67%
Lipa J.
Progress in Plant Protection
|
1997
|
tom 37
|
nr 1
27-35
10

Forecasting carbon budget under climate change and CO2 fertilization for subtropical region in China using Integrated Biosphere Simulator (IBIS) model

67%
Zhu Q., Jiang H., Liu J., Peng C., Fang X., Yu S., Zhou G., Wei X., Ju W.
Polish Journal of Ecology
|
2011
|
tom 59
|
nr 1
The regional carbon budget of the climatic transition zone may be very sensitive to climate change and increasing atmospheric CO2 concentrations. This study simulated the carbon cycles under these changes using process-based ecosystem models. The Integrated Biosphere Simulator (IBIS), a Dynamic Global Vegetation Model (DGVM), was used to evaluate the impacts of climate change and CO2 fertilization on net primary production (NPP), net ecosystem production (NEP), and the vegetation structure of terrestrial ecosystems in Zhejiang province (area 101,800 km2, mainly covered by subtropical evergreen forest and warm-temperate evergreen broadleaf forest) which is located in the subtropical climate area of China. Two general circulation models (HADCM3 and CGCM3) representing four IPCC climate change scenarios (HC3AA, HC3GG, CGCM-sresa2, and CGCM-sresb1) were used as climate inputs for IBIS. Results show that simulated historical biomass and NPP are consistent with field and other modelled data, which makes the analysis of future carbon budget reliable. The results indicate that NPP over the entire Zhejiang province was about 55 Mt C yr-1 during the last half of the 21st century. An NPP increase of about 24 Mt C by the end of the 21st century was estimated with the combined effects of increasing CO2 and climate change. A slight NPP increase of about 5 Mt C was estimated under the climate change alone scenario. Forests in Zhejiang are currently acting as a carbon sink with an average NEP of about 2.5 Mt C yr–1. NEP will increase to about 5 Mt C yr–1 by the end of the 21st century with the increasing atmospheric CO2 concentration and climate change. However, climate change alone will reduce the forest carbon sequestration of Zhejiang’s forests. Future climate warming will substantially change the vegetation cover types; warm-temperate evergreen broadleaf forest will be gradually substituted by subtropical evergreen forest. An increasing CO2 concentration will have little contribution to vegetation changes. Simulated NPP shows geographic patterns consistent with temperature to a certain extent, and precipitation is not the limiting factor for forest NPP in the subtropical climate conditions. There is no close relationship between the spatial pattern of NEP and climate condition.
11
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Climate change: causes, effects and the need for science education for sustainable development

67%
Nwona H. A.
International Letters of Natural Sciences
|
2013
|
tom 04
The world we live in has witnessed some drastic environmental imbalance in recent times. These imbalances have threatened sustainable development- which is the ultimate goal of man-environment relationship. This paper reviews the causes and effects of climate change on man and his environment with a view to using science education to solve the problems posed by climate change. Literature shows that climate change results mainly from human activities such as rapid deforestation for agricultural and industrial purposes, carbon dioxide emission from fossil fuel burning, carbon dioxide emission from burning gasoline for transportation, usage of chemical fertilizers on croplands and methane emission from animals, agriculture and arctic sea beds. The consequences of these activities include global warming, ozone layer depletion, greenhouse effect, rising sea level and acid rain. It is recommended here that the whole educational process be re-packaged to emphasize science education as a panacea for sustainable development. The argument here is that the educational institutions are the best media for the inculcation of proper morals and values. It is also recommended that teacher education programmes should allocate more funds to research in, and teaching of science in schools.
12

An influence of rape oil ester content in fuel blend on carbon dioxide emission levels

67%
Piekarski W., Wawrzosek J.
Teka Komisji Motoryzacji i Energetyki Rolnictwa
|
2004
|
tom 04
13

Some output parameters of indirect injection diesels running on rape biofuel under transient conditions

67%
Kiernicki Z.
Teka Komisji Motoryzacji i Energetyki Rolnictwa
|
2005
|
tom 05
14

Influence of composition of fatty acid methyl esters on smoke opacity and amount of polycyclic aromatic hydrocarbons in engine emissions

67%
Sendzikiene E., Makareviciene V., Janulis P.
Polish Journal of Environmental Studies
|
2007
|
tom 16
|
nr 2
Soot and hydrocarbons are usually found in diesel exhaust gases. They are formed when the fuel is burnt out incompletely. Polycyclic aromatic hydrocarbons (PAH) are sorbed on the soot, and may cause cancerous diseases, asthma and other diseases. The purpose of this work was to evaluate the dependence of smoke opacity and amount of polycyclic aromatic hydrocarbons in engine emissions on multi-component biodiesel fuel composition. We analyzed the composition of exhaust gases when diesel engine was fuelled with rapeseed oil methyl esters (RME ), RME mixtures with linseed oil methyl esters (LSME ) and fatty acid methyl esters (FA ME) of animal origin, assessing the smoke opacity and qualitative and quantitative composition of PAH. It was determined that smoke opacity of exhaust gases decreases at different rotation speeds (1200 and 2000 min⁻¹) when the amount of FA ME, containing a greater amount of saturated fatty acids, is increasing. Total PAH concentration in exhaust gases of biofuel mixtures with pork lard fatty acid methyl esters (LME ) is lower than in the case of mixtures with beef tallow fatty acid methyl esters (TME ). The amount of PAH at a rotation speed of 1200 min⁻¹ reduced down to 57%, if compared to pure RME , and down to 30%, when the rotation speed was 2000 min⁻¹. In the exhaust gases of biofuel mixtures with pork lard fatty acid methyl esters there are fewer PAHs with highly expressed mutagenic and carcinogenic effects if compared to pure RME and its mixtures, containing tallow fatty acid methyl esters. The most effective from an environmental point of view is use of a fuel mixture containing 80% RME , 4% LSME and 16% LME.
15

Sprawcy chorob a zmiany klimatyczne

51%
Korbas M.
Progress in Plant Protection
|
2008
|
tom 48
|
nr 3
771-776
16

Wykład inauguracyjny prof. dr. hab. Zbigniewa W. Kundzewicza pt. Zmiany klimatu - przyczyny i skutki

51%
Kundzewicz Z. W.
Agricola. Pismo SGGW
|
2010
|
nr 78
17
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Emisja i absorpcja N20 na tle emisji CO2 w glebach brunatnych w zroznicowanych warunkach oksydoredukcyjnych

51%
Wlodarczyk T.
Acta Agrophysica
|
2000
|
tom 28
1-132
Nitrous oxide (N2O) emission and absorption and carbon dioxide (CO2) emission from Eutric Cambisol were measured after treatment soils with NO3 - N in laboratory incubation experiments. Incubation experiments were designed to investigate the influence of variables such as oxidation- reduction conditions, pH, organic matter content and granulometric composition on denitrification capacity of investigated soils. Results showed that these soils were emitters (cumulative production N2O ranged from 11.4 to 66.5 mg N2O-N kg-1 of soil) as well as reducers (daily sink of N2O ranged from 1.3 to 66.5 mg N2O-N d-1 kg-1 of soil). The range of reduction of N20 under investigation conditions was from 10 to 100% depending on the kind of soil and time of incubation. Production and reduction of N20 were non- linearly correlated with redox potential (R2=0.906 and R2=0.966, respectively). The boundary value of redox potential for emission of nitrous oxide was 250 mV and for absorption of N2O was about 200 mV. Redox potential showed a negative correlation with pH value (R =0.685). Eh value decreased with decreasing of N03-N in the range from about 10 to 100 mg NO3-N kg-1 of soil. The highest daily reduction of nitrate was observed in the narrow range of Eh value (200 - 210 mV). The boundary nitrate concentration resulted in distinct drop of redox potential was about 100 mg NO3-N kg-1. Under investigated conditions the maximum emission of N20 was observed at pH range between 4.5-6, but maximum absorption of nitrous oxide occurred at pH about 5.5 to about 7. Differences in the dissimi- lative reduction of nitrate were observed in the investigated soils. Absorption of N20 occurred simultaneously with the reduction of nitrate and after depletion of NO3- during the course of the experiment. The range of reduccd nitrate fluctuated from 22 to 100% depending on the kind of soil and time of incubation. Denitrification rate and sink of nitrous oxide showed high cor- relation with mineralization of organic matter (R =0.906 and R =0.913, respectively). Daily emission of CO2 ranged from 1.3 to 23.2 mg CO2-C kg-1 d-1 and was correlated with redox potential (R2=0.871), organic matter content (R2=0.314), and pH (R2=0.804). Differences in release of C02 were noticed in the investigated soils. The lowest cumulative amount of carbon dioxide was found in soils developed from sand (mean 75 mg C02-C kg-1). Higher emission was observed in soils developed from loam (mean 130 mg CO2-C kg-1) and the highest amount of carbon dioxide was obtained in soils developed from silt (mean 210 mg C02-C kg-1). Relationship between carbon (as CO2) and nitrogen (as N2O) flux reflected by the C/N ratio in the headspace air and relationship between carbon (as CO2 flux) and nitrogen (as NO3- reduced) were calculated. These two ratios describe the character of biochemical processes in the soils particularly their denitrification capacity as well as their ability to sink of nitrous oxide and nitrate reduction.
18

O prognozach zmian klimatu Ziemi

50%
Kurowski A.
Farmer
|
2018
|
nr 04
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