A novel pathway of soil organic matter formation by selective preservation of resistant straight-chain biopolymers: chemical and isotope evidence

被引：144

作者：

Lichtfouse, E

Chenu, C

Baudin, F

Leblond, C

Da Silva, M

Behar, F

Derenne, S

Largeau, C

Wehrung, P

Albrecht, P

机构：

[1] INPL, ENSAIA, INRA, Lab Sols & Environm, F-54505 Vandoeuvre Les Nancy, France

[2] INRA, Unite Sci Sol, F-78026 Versailles, France

[3] Univ Paris 06, CNRS, URA 1761, Lab Stratig, F-75252 Paris 05, France

[4] IFP Energies Nouvelles, F-92506 Rueil Malmaison, France

[5] Ecole Natl Super Chim, CNRS, UMR 7573, Lab Chim Bioorgan & Organ Phys, F-75231 Paris 05, France

[6] Univ Strasbourg, Lab Geochim Organ, F-67008 Strasbourg, France

来源：

ORGANIC GEOCHEMISTRY | 1998年 / 28卷 / 06期

关键词：

C-13 of soil alkanes; NMR; resistant aliphatic biopolymer; pyrolysis of humin;

D O I：

10.1016/S0146-6380(98)00005-9

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

A resistant soil organic residue, "humin", has been analyzed by solid-state C-13-NMR and pyrolysis followed by molecular and C-13 determination of the pyrolysate alkane-alkene fraction. The results show the occurrence of highly aliphatic, straight-chain biopolymer material as a substantial part of soil organic matter. They confirm the hypothesis by which a part of soil organic matter can be formed by selective preservation of resistant highly aliphatic microbial polymers. This pathway is additional to the longstanding neogenesis hypothesis involving recondensation of small polar molecules such as amino acids, carbohydrates and phenols. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：411 / 415

页数：5

共 24 条

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