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Lin C.,Beijing Normal University | Lin C.,Key Laboratory of Humid Sub tropical Eco geographic Process of Ministry of Education | Yang Y.,Key Laboratory of Humid Sub tropical Eco geographic Process of Ministry of Education | Guo J.,Key Laboratory of Humid Sub tropical Eco geographic Process of Ministry of Education | And 2 more authors.
Shengtai Xuebao/ Acta Ecologica Sinica | Year: 2010

In natural reserve of Jianou, Fujian, fine roots of Castanopsis carlesii and Cunninghamia lanceolata were selected and categorized into 0 - 1mm and 1 - 2mm size classes in diameter to study their mass loss and nutrient release in decomposition by litterbag experiment with mono-specific and mixed litter in both C. carlesii and C. lanceolata stands for 720 d. At the initial phase (0 - 270 d) of decomposition, a synergistic effect of root mixtures on the mass loss was observed. However, an antagonistic effect dominated at the late phase (270 -720 d) of decomposition. The pattern of nutrient release differed from that of mass loss in the decomposition. In the initial phase (0-360 d) of mixed decomposition, a synergistic effect was shown for the release of N, P and K, while an antagonistic effect for the release of N, K in the later phase (360 -720 d) except for P which showed a neutral effect. The effect of fineroot mixture on mass loss and nutrient release could be closely related with the dynamics of soil decomposer community, which necessitates the further investigation.

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