https://enst.umd.edu/sites/enst.umd.edu/files/_docs/Weil_et_al_2003_corrected.pdf

this article may help you

Dear Tin Mar Lynn,

you may also consider Zimmernann et al. 2007 who presented a fractionation method to assess sensitive, slow, and passive pools: Article Measured soil organic matter fractions can be related to poo...

Best regards

Nisl

You can consult this book. Thanks

Nagalakshmi Radhakrishnan

Hi there,

Thank you so much. The paper you mentioned is really helpful. I confused the term labile C and stable C were same with active C and slow C or not. From that paper, I found active C and labile C are same. Still need to be clear about stable C and slow C though.

best regards

lynn

Nils Borchard

Thank you for your answer. It is helpful and gives me knowledge of how to do carbon fractionation. But, I want to know about chemical fractionation more than mechanical one.

Abhijit Mitra Thanks for your help, but, your book cannot be downloaded.

best regards

lynn

As I understand you, if you come up for concepts of active, intermidiate and slow carbon from soil organic model, I think they are more of theoritical concepts. Analysis can be taken to approximate them or give idea about them for e.g. their C/N ratio, but I don't think there is a lab approch for these soil carbon pools.

Bekele Lemma

Thanks for your answer.

lynn

Dear Tin Mar Lynn,

as mentioned by Bekele Lemma , fast, (intermediate) and slow SOM are conceptual pools with different decomposition rate constant, which are used in models. It is still unresolved task how to link these conceptual pools with measurable SOM fractions. One of the approaches was mentioned by Nils Borchard . I would like to draw an attention to the alternative, relatively simple method (DRIFTS) as described in our recent paper:

Article DRIFTS peaks as measured pool size proxy to reduce parameter...

Dear Dr. Sergey Blagodatsky ,

Thanks for your answer. I will read your paper.

Best regards

lynn