Hi, everyone.
My experimental data showed that under natural conditions, lignin (acid unhydrolyzable residue measured using the acid detergent digestion method) accumulated in the early stage of leaf leaves decomposition. As you know, most previous studies reported that lignin usually accumulates due to the synthesis of phenols in the late stage of decomposition. But, how about the early stage of decomposition? Why does lignin accumulate in the early stage of decomposition?
Thanks for your answers and comments.
Sincerely,
Lignin is difficult to breakdown. It's this complicated structure that makes breaking down lignin difficult. The bonds that hold the lignin units together – ether linkages and carbon–carbon bonds – are very strong, and the lignin can't be simply dissolved in water. ... Another method capable of breaking down lignin is pyrolysis.
https://edu.rsc.org/feature/the-lignin-challenge/2000124.article
... lignin chemical structure contribute to early stages of ... give rise to variation in rates of lignin accumulation in soils .
https://www.fpl.fs.fed.us/documnts/pdf2011/fpl_2011_talbot001p.pdf
Lignin degradation rate is higher when nitrogen content in low. The reason for accumulation of lignin can be due to low degradation rate of lignin or higher degradation rate of cellulose and hemicellulose.
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