凋落物分解及其影响机制
贾丙瑞

Litter decomposition and its underlying mechanisms
JIA Bing-Rui
表1 凋落物分解研究领域经典文献
Table 1 Classical articles in the field of litter decomposition research
序号 No. 文献 Reference 备注 Note
1 Melin, 1930 首次使用碳氮比来分析北美几种森林凋落物的分解特征, 后来成为评价凋落物分解的经典指标。
The carbon:nitrogen ratio was firstly related to litter decomposition in North American forests, and became a common indicator.
2 Gustafson, 1943 针叶分解过程中形成的酸性物质抑制了细菌活性, 而阔叶含有大量的钙能够起到中和作用, 从而提高针阔叶混合凋落物的分解速率。
The needles produced an acid reaction, which would suppress bacterial activity, but the broadleaves with high calcium content could neutralize the decaying material and enhance the decompose rates.
3 Bocock & Gilbert, 1957 首次使用尼龙网替代金属或木质材料作为分解容器, 即: 分解实验中应用最广泛的分解袋法。
The metal or wooden containers were substituted with nylon mesh bags. Litter-bag method is the most common method for litter decomposition measurement.
4 Olson, 1963 提出负指数衰减模型来描述凋落物物质残留与分解时间的关系, 是凋落物分解过程失重率研究常采用的模型。
Litter mass remaining rate with time was simulated with the negative exponential declining model, which is widely used to describe litter decomposition.
5 Fogel & Cromack Jr., 1977 提出氮和木质素是影响凋落物分解速率和模式的重要因素, 至今两者在分解中的调控作用仍然是研究的重点。
Litter decomposition was closely correlated with nitrogen and lignin content, which are still the important research contents up to now.
6 Vossbrinck et al., 1979 用不同孔径分解袋和杀菌处理来区分微生物、土壤动物和非生物因素的贡献, 发现无生物作用的分解速率为7%, 只有微生物作用的分解速率为15%, 三者共同作用的分解速率为29%。
The chemicals and two mesh sizes were used to partition the abiotic, microbial and mesofaunal effects. Litter was decomposed 7% in the abiotic treatment, 15% in the microbial treatment, and 29% in the microbial and mesofaunal treatment.
7 Taylor et al., 1989 凋落物在分解前期主要受氮限制, 后期为木质素浓度或木质素/氮限制。
As decay proceeded, the main influencing factors were shifted from nitrogen to lignin or lignin:nitrogen ratio.
8 Vitousek et al., 1994 基于CENTURY模型构建凋落物分解模型, 把植物残体分为代谢物质和结构物质。代谢物质易于快速分解, 而结构物质的分解速率可表达为木质素/纤维素的函数, 比值越高分解越慢。
Litter decomposition was simulated with a revision of CENTURY model. Plant residue was divided into metabolic and structural matter. Metabolic matter is easy to decompose. Structural matter could be expressed with the lignin:cellulose ratio, and the higher the ratio the slower the decomposition rate.
9 Bosatta & Ågren, 1999 根据酶动力学的基本原理, 凋落物分解的温度敏感性与凋落物碳质量呈负相关关系, 即“碳质量-温度”假说。
Based on the theory of enzyme kinetics, the sensitivity of litter decomposition to temperature is negative with its quality, i.e. “carbon quality-temperature” hypothesis.
10 Gartner & Cardon, 2004 非加和效应在混合凋落物分解质量损失和养分释放中分别占67%和76%。
Non-additive effects of mass loss and nutrient release were observed in 67% and 76% of tested litter mixtures, respectively.