Dataset Information

The Mass Loss and Humification of Stumps and Roots in Masson Pine Plantations Based on Log File Records.

ABSTRACT: Stumps account for a large proportion of coarse woody debris in managed forests, but their decay dynamics are poorly understood. The loss of mass and the degree of humification of the above-ground woody debris, below-ground woody debris, bark and root system (R1, 10 mm ? diameter > 0 mm; R2, 25 mm ? diameter >10 mm; 100 mm ? R3 > 25 mm; R4 > 100 mm) of Masson pine (Pinus massoniana) stump systems were evaluated in southwestern China in a chronosequence of plantations cut 1-15 years prior to the study. The results indicated that above-ground woody debris decomposed more quickly than below-ground woody debris and bark, whereas the degree of humification followed the opposite trend. Compared with one-year stumps, the mass losses of 15-year stump systems were 60.4% for above-ground woody debris, 42.1% for below-ground woody debris, 47.3% for bark, 69.9% for R1, 47.3% for R2, 51.0% for R3, and 83.2% for R4. In contrast, below-ground woody debris showed a greater degree of humification compared with other components in the stump system. Among the root system, fine roots (R1, diameter ? 10 mm) had the largest k value (0.09), whereas the decay rate of coarser roots (R2, R3, R4; diameter > 10 mm) increased with increasing root diameter. However, coarse roots showed a larger degree of humification (0.2-0.6) than fine roots (0.3-0.4). These results suggest that below-ground woody debris and coarse roots may display a higher degree of humification, showing greater short-term contributions to overall humification when compared with the other components in the stump system.

SUBMITTER: Zhou J

PROVIDER: S-EPMC4981408 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature

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The Mass Loss and Humification of Stumps and Roots in Masson Pine Plantations Based on Log File Records.

Zhou Jiao J Wu Fuzhong F Yang Wanqin W Tan Bo B Xu Zhenfeng Z Zhang Jian J Duan Fei F Liu Hui H Justine Meta Francis MF

PloS one 20160811 8

Stumps account for a large proportion of coarse woody debris in managed forests, but their decay dynamics are poorly understood. The loss of mass and the degree of humification of the above-ground woody debris, below-ground woody debris, bark and root system (R1, 10 mm ≥ diameter > 0 mm; R2, 25 mm ≥ diameter >10 mm; 100 mm ≥ R3 > 25 mm; R4 > 100 mm) of Masson pine (Pinus massoniana) stump systems were evaluated in southwestern China in a chronosequence of plantations cut 1-15 years prior to the ...[more]

PMID: 27512999

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Dataset Information

The Mass Loss and Humification of Stumps and Roots in Masson Pine Plantations Based on Log File Records.

Publications

The Mass Loss and Humification of Stumps and Roots in Masson Pine Plantations Based on Log File Records.

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