作者
Catherine Roumet, Marine Birouste, Catherine Picon‐Cochard, Murielle Ghestem, Normaniza Osman, Sylvain Vrignon‐Brenas, Kun‐fang Cao, Alexia Stokes
发表日期
2016/5
期刊
New Phytologist
卷号
210
期号
3
页码范围
815-826
简介
- Although fine roots are important components of the global carbon cycle, there is limited understanding of root structure–function relationships among species. We determined whether root respiration rate and decomposability, two key processes driving carbon cycling but always studied separately, varied with root morphological and chemical traits, in a coordinated way that would demonstrate the existence of a root economics spectrum (RES).
- Twelve traits were measured on fine roots (diameter ≤ 2 mm) of 74 species (31 graminoids and 43 herbaceous and dwarf shrub eudicots) collected in three biomes.
- The findings of this study support the existence of a RES representing an axis of trait variation in which root respiration was positively correlated to nitrogen concentration and specific root length and negatively correlated to the root dry matter content, lignin : nitrogen ratio and the remaining mass after …
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C Roumet, M Birouste, C Picon‐Cochard, M Ghestem… - New Phytologist, 2016