Fast disappearance of the water-soluble phenolic fraction in eucalypt leaf litter during laboratory and field experiments

被引:21
作者
Bernhard-Reversat, F [1 ]
Main, G
Holl, K
Loumeto, J
Ngao, J
机构
[1] IRD, Lab Ecol Sols Tropicaux, 32 Ave Henti Varagnat, F-93143 Bondy, France
[2] Univ Brazzaville, Lab Biol Vegetale, Brazzaville, Rep Congo
关键词
litter decomposition; precipitating tannins; CO2; release;
D O I
10.1016/S0929-1393(03)00061-1
中图分类号
S15 [土壤学];
学科分类号
0903 ; 090301 ;
摘要
Eucalypt litter, which decomposes slowly, exhibits a high content of phenolic compounds, and the disappearance of these compounds during decomposition is expected to improve faunal consumption, litter decomposition and incorporation into the soil. The aim of this study was to measure the disappearance rate of the phenolic compounds in eucalypt litter during laboratory and field decomposition. The outstanding result was the fast disappearance of soluble phenolic compounds and tannins, either in vitro or in the field. Laboratory experiments suggested that the rapid loss of phenolics observed during decomposition could not be ascribed to leaching only, and that degradation might play an important part. When initial litter quality is taken into account in the interpretation of decomposition studies, the disappearance rate of soluble phenolics, should also be considered. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:273 / 278
页数:6
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