کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2026836 1070048 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modeling the influence of soil-plant residue contact on carbon mineralization: Comparison of a compartmental approach and a 3D spatial approach
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش خاک شناسی
پیش نمایش صفحه اول مقاله
Modeling the influence of soil-plant residue contact on carbon mineralization: Comparison of a compartmental approach and a 3D spatial approach
چکیده انگلیسی

The contact between soil and plant residues has a major effect on the fate of carbon in soil. In this study, we used published data on soil and plant residue incubations. Results showed that larger residues decomposed more slowly because it provides less surface area in contact with the soil. We tested two models with these data. The first was a simple C–N compartmental model with no spatial dimension, in which the contact factor is a multiplicative function of the decomposition constant. The second was an individual-based model that explicitly describes the 3D distribution of organic matter, microbial biomass and inorganic N and their spatial interactions. In this model, we hypothesized that each soil aggregate was a microbial habitat. Both models gave simulated results close to the data. The second, without fitting, reproduced similar results to the empirical macroscopic parameter of the first and indicated that the slower decomposition rate of larger residues was partly because less inorganic nitrogen was available to microorganisms.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soil Biology and Biochemistry - Volume 40, Issue 11, November 2008, Pages 2754–2761
نویسندگان
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