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生物残体是由活的生物(包括动物和植物)死亡后形成,如森林砍伐后遗留的树桩,温带森林中每年一度集中产生的枯枝落叶,森林和草原中大型动物死亡遗留的尸体,这些生物残体一般都独自形成一个实体,不与土壤进行均匀的混合,它们的分解,一般主要不是依靠贮积在土壤中的酶或微生物的作用,它们的分解要经过一个在残体内重新滋长微生物的过程,使残体逐渐腐烂变质,进行分解。因此,生物残体的分解,与其说是分解过程,还不如说是一个微生物的培养过程,或者说是这两个过程相互交错,一方面是微生物种群的增长,另一方面是残体中有机物质被微生物分解、转化、利用和复合成新的有机体,对于这样一个复杂的过程,通常适用于土壤有机质分解过程的Stanford-Smith方程就不适用了,而建立在营养动力学基础上的单种群模型(崔-Lawson方程)却可加以转化用来描述这个过程。
Bio-remnants are formed after the death of living organisms (including animals and plants), such as stumps left after deforestation, annual concentrated litter in temperate forests, dead bodies from large animal deaths in forests and grasslands Biological residues generally form an entity by themselves and do not mix uniformly with the soil. Their decomposition generally does not rely mainly on the action of enzymes or microorganisms stored in the soil, but their decomposition takes place through a process of re-growth of microorganisms within the residue The process, the decay gradually spoiled, decomposition. Therefore, the decomposition of biological residues, not so much the decomposition process, is a microbial culture process, or that the two processes are intertwined, on the one hand the growth of microbial populations, on the other hand, the residual organic For such a complicated process, the Stanford-Smith equation, which is usually applied to soil organic matter decomposition process, is not suitable for the matter to be decomposed, transformed, utilized and complexed by microorganisms. However, a single population based on nutrition dynamics The model (Choi-Lawson equation) can be transformed to describe this process.