Articles | Volume 13, issue 19
https://doi.org/10.5194/bg-13-5487-2016
https://doi.org/10.5194/bg-13-5487-2016
Research article
 | 
04 Oct 2016
Research article |  | 04 Oct 2016

Hydrologically transported dissolved organic carbon influences soil respiration in a tropical rainforest

Wen-Jun Zhou, Hua-Zheng Lu, Yi-Ping Zhang, Li-Qing Sha, Douglas Allen Schaefer, Qing-Hai Song, Yun Deng, and Xiao-Bao Deng

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Cited articles

Bekku Y. S., Nakatsubo T., Kume, A., Adachi M., and Koizumi, H.: Effect of warming on the temperature dependence of soil, respiration rate in arctic, temperate and tropical soils, Appl. Soil. Ecol., 22, 205–210, 2003.
Bengtson, P. and Bengtsson, G. R.: Rapid turnover of DOC in temperate forests accounts for increased CO2 production at elevated temperatures, Ecol. Lett., 10, 783–790, 2007.
Bianchi, T. S.: The role of terrestrially derived organic carbon in the coastal ocean: A changing paradigm and the priming effect, P. Natl. Acad. Sci. USA, 108, 19473–19481, 2011.
Blagodatskaya E., Yuyukina T., Blagodatsky S., and Kuzyakov Y.: Three-source-partitioning of microbial biomass and of CO2 efflux from soil to evaluate mechanisms of priming effects, Soil Biol. Biochem., 43, 778–786, 2011.
Cao, M., Zhang, J., Feng, Z., Deng, J., and Deng, X.: Tree species composition of a seasonal rain forest in Xishuangbanna, Southwest China, Trop. Ecol., 37, 183–192, 1996.
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Throughfall and litter leachate DOC fluxes amounted to 6.81 and 7.23 % of the net ecosystem exchange, respectively. The surface soil was a sink of above water transported DOC. The analysis of 13° C hydrological water DOC and soil, leaf and litter indicated that DOC is transformed in the surface soil. Soil respiration is more dependent on water transported DOC flux than soil-water content (at 0–20 cm), and most sensitive to soil-water DOC flux (at 0–20 cm) compared to soil temperature.
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