Various spectroscopic and electrochemical techniques combined was used to investigate the compositional changes of dissolved organic matter (DOM) and the difference in humification degree during full-scale cow dung vermicomposting. This study also investigated that whether the two techniques could be used as humification indices. The physicochemical characteristics of vermicompost were superior to those of the control, indicating that vermicomposting significantly accelerated the humification process, which was confirmed by spectroscopic and electrochemical analyses. Meanwhile, the changes of three components identified and electron transfer capacities in vermicomposting further revealed that vermicomposting resulted in significant compositional changes of DOM and higher humification degree. Partial least squares path modeling and redundancy analysis revealed that the two techniques could be used as humification indices for vermicomposting. These results of this study demonstrated that the combination of spectroscopy and electrochemistry was applicable to characterize the compositional changes of DOM and the humification degree of vermicomposting.

中文翻译：

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结合光谱学和电化学技术，对牛粪进行全面ver粪化过程中溶解有机物的成分变化的见解。

结合各种光谱学和电化学技术，研究了牛粪粪便堆肥过程中可溶性有机物（DOM）的组成变化和腐殖度的差异。这项研究还调查了这两种技术是否可以用作增湿指数。mi堆的理化特性优于对照，表明ver堆显着加速了腐殖化过程，这在光谱和电化学分析中得到了证实。同时，在ver堆肥中识别出的三个成分的变化和电子传递能力进一步表明，ver堆肥导致DOM的组成发生明显变化，腐殖化程度更高。偏最小二乘路径建模和冗余分析表明，这两种技术都可以用作腐殖土的腐殖化指标。这项研究的这些结果表明，光谱学和电化学的结合可用于表征DOM的组成变化和ver堆肥的腐殖度。