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Decay and nutrient dynamics of coarse woody debris in the Qinling Mountains, China
As an ecological unit, coarse woody debris (CWD) plays an essential role in productivity, nutrient cycling, carbon sequestration, community regeneration and biodiversity. However, thus far, the information on quantification the decomposition and nutrient content of CWD in forest ecosystems remains c...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5383274/ https://www.ncbi.nlm.nih.gov/pubmed/28384317 http://dx.doi.org/10.1371/journal.pone.0175203 |
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author | Yuan, Jie Hou, Lin Wei, Xin Shang, Zhengchun Cheng, Fei Zhang, Shuoxin |
author_facet | Yuan, Jie Hou, Lin Wei, Xin Shang, Zhengchun Cheng, Fei Zhang, Shuoxin |
author_sort | Yuan, Jie |
collection | PubMed |
description | As an ecological unit, coarse woody debris (CWD) plays an essential role in productivity, nutrient cycling, carbon sequestration, community regeneration and biodiversity. However, thus far, the information on quantification the decomposition and nutrient content of CWD in forest ecosystems remains considerably limited. In this study, we conducted a long-term (1996–2013) study on decay and nutrient dynamics of CWD for evaluating accurately the ecological value of CWD on the Huoditang Experimental Forest Farm in the Qinling Mountains, China. The results demonstrated that there was a strong correlation between forest biomass and CWD mass. The single exponential decay model well fit the CWD density loss at this site, and as the CWD decomposed, the CWD density decreased significantly. Annual temperature and precipitation were all significantly correlated with the annual mass decay rate. The K contents and the C/N ratio of the CWD decreased as the CWD decayed, but the C, N, P, Ca and Mg contents increased. We observed a significant CWD decay effect on the soil C, N and Mg contents, especially the soil C content. The soil N, P, K, Ca and Mg contents exhibited large fluctuations, but the variation had no obvious regularity and changed with different decay times. The results showed that CWD was a critical component of nutrient cycling in forest ecosystems. Further research is needed to determine the effect of diameter, plant tissue components, secondary wood compounds, and decomposer organisms on the CWD decay rates in the Qinling Mountains, which will be beneficial to clarifying the role of CWD in carbon cycles of forest ecosystems. |
format | Online Article Text |
id | pubmed-5383274 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-53832742017-05-03 Decay and nutrient dynamics of coarse woody debris in the Qinling Mountains, China Yuan, Jie Hou, Lin Wei, Xin Shang, Zhengchun Cheng, Fei Zhang, Shuoxin PLoS One Research Article As an ecological unit, coarse woody debris (CWD) plays an essential role in productivity, nutrient cycling, carbon sequestration, community regeneration and biodiversity. However, thus far, the information on quantification the decomposition and nutrient content of CWD in forest ecosystems remains considerably limited. In this study, we conducted a long-term (1996–2013) study on decay and nutrient dynamics of CWD for evaluating accurately the ecological value of CWD on the Huoditang Experimental Forest Farm in the Qinling Mountains, China. The results demonstrated that there was a strong correlation between forest biomass and CWD mass. The single exponential decay model well fit the CWD density loss at this site, and as the CWD decomposed, the CWD density decreased significantly. Annual temperature and precipitation were all significantly correlated with the annual mass decay rate. The K contents and the C/N ratio of the CWD decreased as the CWD decayed, but the C, N, P, Ca and Mg contents increased. We observed a significant CWD decay effect on the soil C, N and Mg contents, especially the soil C content. The soil N, P, K, Ca and Mg contents exhibited large fluctuations, but the variation had no obvious regularity and changed with different decay times. The results showed that CWD was a critical component of nutrient cycling in forest ecosystems. Further research is needed to determine the effect of diameter, plant tissue components, secondary wood compounds, and decomposer organisms on the CWD decay rates in the Qinling Mountains, which will be beneficial to clarifying the role of CWD in carbon cycles of forest ecosystems. Public Library of Science 2017-04-06 /pmc/articles/PMC5383274/ /pubmed/28384317 http://dx.doi.org/10.1371/journal.pone.0175203 Text en © 2017 Yuan et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Yuan, Jie Hou, Lin Wei, Xin Shang, Zhengchun Cheng, Fei Zhang, Shuoxin Decay and nutrient dynamics of coarse woody debris in the Qinling Mountains, China |
title | Decay and nutrient dynamics of coarse woody debris in the Qinling Mountains, China |
title_full | Decay and nutrient dynamics of coarse woody debris in the Qinling Mountains, China |
title_fullStr | Decay and nutrient dynamics of coarse woody debris in the Qinling Mountains, China |
title_full_unstemmed | Decay and nutrient dynamics of coarse woody debris in the Qinling Mountains, China |
title_short | Decay and nutrient dynamics of coarse woody debris in the Qinling Mountains, China |
title_sort | decay and nutrient dynamics of coarse woody debris in the qinling mountains, china |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5383274/ https://www.ncbi.nlm.nih.gov/pubmed/28384317 http://dx.doi.org/10.1371/journal.pone.0175203 |
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