Próba oceny produktywności ekosystemu w warunkach polowych Wielkopolski

• Autorzy: Kowalska N. , Chojnicki B. H. , Józefczyk D. , Urbaniak M. , Juszczak R. , Olejnik J.

Warianty tytułu

EN

An Attempt to Evaluate the Productivity of Ecosystems Under Field Conditions of Wielkopolska

• Języki publikacji: PL

Abstrakty

EN

The Eddy Covariance technique has been applied for corn field NEE estimation. The Smith, Michaelis-Menten and Misterlich formulas has been used for calculation of net ecosystem exchange (NEE) values between corn canopy and the atmosphere. These approaches have been applied for estimation of temeparture and radiation modification impact on the corn field productivity. The NEE has been evaluated in the first part of this paper and then the relation of NEE runs and elements that influence the NEE values has been summarized. In another part the analysis of NEE under thermal and radiative conditions has been presented. The Michaelis-Menten model has been found as the most distinct one for the measurements of the relationship. This model indicated that the highest NEE value (NEE = 10.0 µmol m^-2 s^-1) has been found under combination of the low radiation and high temperature conditions. The lowest value of NEE has been estimated under the highest PPFD and lowest Ta amount. The applied models have confirmed relationship between NEE, PPFD and Ta. All three models confirmed the fact that the lowest ecosystem productivity is found under high radiation input. The accumulated NEE values were compared with the real values according to the Smith, Michaelis-Menten and Misterlich equations. The results of the Michaelis-Menten equation and Misterlich were the most similar to the real cumulative NEE values. The theoretical change of thermal (0.5°C increase) and radiation (4% decrease) resulted in tested higher CO2 sequesteration from the atmosphere.

Słowa kluczowe

PL

produktywność ekosystemu; warunki polowe

EN

qinghai-tibetan plateau; carbon dioxide; alpine meadow; CO2 exchange; environmental control; water vapor; temperature; boreal; fluxes; forest

• Wydawca: Politechnika Koszalińska
• Czasopismo: Rocznik Ochrona Środowiska
• Rocznik: 2013
• Tom: Tom 15, cz. 3
• Strony: 2481--2495
• Opis fizyczny: Bibliogr. 31 poz., rys.

Twórcy

autor

Kowalska N.

• Uniwersytet Przyrodniczy, Poznań

autor

Chojnicki B. H.

• Uniwersytet Przyrodniczy, Poznań

autor

Józefczyk D.

• Uniwersytet Przyrodniczy, Poznań

autor

Urbaniak M.

• Uniwersytet Przyrodniczy, Poznań

autor

Juszczak R.

• Uniwersytet Przyrodniczy, Poznań

autor

Olejnik J.

• Uniwersytet Przyrodniczy, Poznań
• Global Change Research Center, AS CR, v.v.i. Brno, Czechy

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