Soil Respiration and Total Belowground Carbon Allocation of Betula costata Secondary Forest and Mixed Broadleaved Korean Pine Forest in Xiaoxing’an Mountains,China

doi:10.7525/j.issn.1673-5102.2015.03.010

Abstract

Abstract: Soil respiration and total belowground carbon allocation are two most important carbon fluxes of forest ecosystems. We measured them in Betula costata secondary forest and mixed broadleaved Korean pine forest. The mean soil respiration of B.costata secondary forest was higher than that of the mixed broadleaved Korean pine forest in the growing season（5.52 and 5.43 μmol·m^-2·s^-1）. The seasonality of soil respiration was driven mainly by soil temperature, which led to 77% and 81% of the variation of soil respiration in B.costata secondary forest and mixed broadleaved Korean pine forest, respectively. Q₁₀ was 2.74 and 2.23, for two-type forest, respectively. The annual flux of soil respiration and total belowground carbon allocation in B.costata secondary forest were both higher than those in mixed broadleaved Korean pine forest.

Key words: Betula costata secondary forest, mixed broadleaved Korean pine forest, soil respiration, belowground carbon allocation

CLC Number:

HUANG Wei；MAO Zi-JUN；HAN Ying-Ying；SUN Tao. Soil Respiration and Total Belowground Carbon Allocation of Betula costata Secondary Forest and Mixed Broadleaved Korean Pine Forest in Xiaoxing’an Mountains,China[J]. Bulletin of Botanical Research, 2015, 35(3): 384-390.

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