Character of Release of Soil CO2 and the Impact of Temperature in the Taibai Mountain of Qinling

doi:10.7668/hbnxb.2010.02.038

Abstract

Abstract: The Qinling mountain system is north and south climate boundary of China,the geographical position is unique,It is quite obvious to the climatic change response.The elevation of temperature will elevate will affect its soil carbon release.Therefore it is very important to research the character of release of soil CO2 in Qinling.The results showed that release rate of soil CO2 increased from 8:00 to 11:00,and the period of high release rate was from 11:00 to 16:00.The order of mean release rate of soil CO2 was:broadleaf oak stand birch stand deciduous broadleaf standLarix chinensi stand Abies chensiensis stand alpine meadow.Release rate of soil CO2 were positively correlated with temperature.The coefficients between release rate of soil CO2 and air temperature and soil temperature at depth of 0-5 cm were higher than those of others.The order of the Q10 value in various vegetationswas Abies chensiensis stand birch forestbroadleaf oak forest alpine meadowdeciduous broadleaf forest Larix chinensis stand.

Key words: Taibaimountain, SoilCO2 flux, Temperature, Q₁₀

CLC Number:

S154.1

QU Ran, LI Jun-sheng, LUO Zun-lan, WU Xiao-pu, ZHAO Cai-yun, TANG Bo. Character of Release of Soil CO² and the Impact of Temperature in the Taibai Mountain of Qinling[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(2): 188-193. doi: 10.7668/hbnxb.2010.02.038.

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http://www.hbnxb.net/EN/Y2010/V25/I2/188

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