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The soil drying along the increase of warming masks the relation between temperature and soil respiration in an Alpine meadow of Northern Tibet

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Shen Z.-X., Wang J.-W., Sun W., Li S.-W., Fu G., Zhang X.-Z., Zhang Y.-J., Yu C.-Q., Shi P.-L., He Y.-T.

Polish Journal of Ecology

2016

tom 64

nr 1

A warming experiment with two magnitudes was performed in an alpine meadow of Northern Tibet since late June, 2013. Open top chambers (OTCs) with two top diameters (0.60 m and 1.00 m) were used to increase soil temperature. Soil respiration (Rs) was measured during the growing season in 2013–2014. The OTCs with top diameters of 1.00 m and 0.60 m increased soil temperature by 1.30 and 3.10oC, respectively, during the whole study period, but decreased soil moisture by 0.02 and 0.05 m³ m⁻³, respectively. However, the two patters of OTCs did not affect Rs. These results implied that a higher warming did not result in a higher Rs but a greater soil drying. Therefore, a higher warming may not cause a higher soil respiration, which was most likely due to the fact that a higher warming may result in a greater soil drying.

Ograniczanie wyników

1 Polish Journal of Ecology

1 Fu G.

1 He Y.-T.

1 Li S.-W.

1 Shen Z.-X.

1 Shi P.-L.

1 Sun W.

1 Wang J.-W.

1 Yu C.-Q.

1 Zhang X.-Z.

1 Zhang Y.-J.

1 2016

Wyniki wyszukiwania

The soil drying along the increase of warming masks the relation between temperature and soil respiration in an Alpine meadow of Northern Tibet