Loss and gain of carbon during char degradation
Loss and gain of carbon during char degradation
复制标题
炭降解过程中碳的损失和增加
DOI：
10.1016/j.soilbio.2016.12.012
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发表时间：
2017
影响因子：
9.7
通讯作者：
Bird M
中科院分区：
文献类型：
--
作者：
Bird M
我们报告了一项研究的结果，该研究考察了在澳大利亚昆士兰北部潮湿的热带雨林土壤中部署了三年的无放射性碳木材在300℃、400℃和500℃下产生的木炭的降解控制。对焦炭进行了四个处理：(I)不加凋落物；(Ii)用叶凋落物覆盖；(Iii)用石灰石碎屑覆盖以改变当地的pH值；(Iv)用石灰石碎屑和叶子凋落物混合覆盖。放射性碳、稳定同位素和工业分析表明，外来(环境)碳和矿物物质的大量进入与样品中本土(炭)碳的损失密切相关。虽然在任何处理下，在500℃下生成的焦炭在三年内的本土碳损失一般为-lt；8%，但在较低温度下形成的焦炭损失了5%-22%的本土碳，同时伴随着高达7.5%的现代外源碳的进入。这些数据提供了明确的证据，表明外来碳的进入与焦炭分解的程度之间存在直接联系，这可能至少部分是由于微生物的定居。如果不考虑外来碳的进入，将导致对焦炭降解率的严重低估。
We report results of a study examining controls on the degradation of chars produced at 300, 400 and 500 °C from radiocarbon-free wood, deployed for three years in a humid tropical rainforest soil in north Queensland, Australia. The chars were subjected to four treatments (i) no litter (ii) covered by leaf litter, (iii) covered by limestone chips to alter local pH, and (iv) covered by limestone chips mixed with leaf litter. Radiocarbon, stable isotope and proximate analyses indicate significant ingress of exogenous (environmental) carbon and mineral material, strongly correlated with loss of indigenous (char) carbon from the samples. While indigenous carbon losses over three years were generally <8% for the char produced at 500 °C char under any treatment, chars formed at lower temperatures lost 5–22% of indigenous carbon accompanied by ingress of up to 7.5% modern exogenous carbon. The data provide clear evidence of a direct link between the ingress of exogenous carbon, likely at least partly due to microbial colonization, and the extent of char decomposition. Failure to account for the ingress of exogenous carbon will lead to a significant under-estimate of the rate of char degradation.
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影响因子：
8.3
作者：
STUIVER, M;POLACH, HA
通讯作者：
POLACH, HA
影响因子：
1.5
作者：
M. Torello-Raventos;T. Feldpausch;E. Veenendaal;F. Schrodt;G. Saiz;T. Domingues;G. Djagbletey;A. Ford;J. Kemp;B. Marimon;Ben Hur Marimon Junior;E. Lenza;J. Ratter;L. Maracahipes;D. Sasaki;B. Sonké;L. Zapfack;H. Taedoumg;D. Villarroel;M. Schwarz;C. Quesada;F. Yoko Ishida;G. B. Nardoto;K. Affum‐Baffoe;L. Arroyo;David M.J.S. Bowman;H. Compaore;K. Davies;A. Diallo;N. Fyllas;M. Gilpin;F. Hien;Michelle O. Johnson;T. Killeen;D. Metcalfe;H. Miranda;M. Steininger;J. Thomson;K. Sykora;E. Mougin;P. Hiernaux;M. Bird;J. Grace;S. Lewis;O. Phillips;J. Lloyd
通讯作者：
M. Torello-Raventos;T. Feldpausch;E. Veenendaal;F. Schrodt;G. Saiz;T. Domingues;G. Djagbletey;A. Ford;J. Kemp;B. Marimon;Ben Hur Marimon Junior;E. Lenza;J. Ratter;L. Maracahipes;D. Sasaki;B. Sonké;L. Zapfack;H. Taedoumg;D. Villarroel;M. Schwarz;C. Quesada;F. Yoko Ishida;G. B. Nardoto;K. Affum‐Baffoe;L. Arroyo;David M.J.S. Bowman;H. Compaore;K. Davies;A. Diallo;N. Fyllas;M. Gilpin;F. Hien;Michelle O. Johnson;T. Killeen;D. Metcalfe;H. Miranda;M. Steininger;J. Thomson;K. Sykora;E. Mougin;P. Hiernaux;M. Bird;J. Grace;S. Lewis;O. Phillips;J. Lloyd
影响因子：
1.3
作者：
Ascough, Philippa L.;Sturrock, Craig J.;Bird, Michael I.
通讯作者：
Bird, Michael I.
影响因子：
5.2
作者：
Bird, MI;Moyo, C;Frost, P
通讯作者：
Frost, P
影响因子：
5
作者：
Ascough, P. L.;Bird, M. I.;Apperley, D.
通讯作者：
Apperley, D.