Temporal Variation of N Isotopic Composition of Decomposing Legume Roots and Its Implications to N Cycling Estimates in ^𝟏𝟓𝐍 Tracer Studies in Agroforestry Systems

Table 2

Common parameters in the residue decomposition model for the two experimental datasets.

Parameter	Code	Value	Unit	Source
Decomposition rate constant of residue	𝑘	0.07 + 1.94/R^a	nday−1b	[24]
Decomposition rate constant of microbial biomass	𝜆	0.0110	nday−1b	[24]
Assimilation yield of C from residue by microbial biomass	𝑌	0.62		[24]
Humification rate of microbial biomass	ℎ	1 − 0.326R/(11.2 + R)		[6]

aC : N ratio of residue.
^bnday refers to a “normalised day” (25°C and optimum water content). In this study, we used 25°C as the reference temperature, instead of 15°C in Nicolardot et al. [24].