周世兴的个人博客分享 http://blog.sciencenet.cn/u/zsx11567

博文

Decomposition of leaf litter mixtures across biomes

已有 1354 次阅读 2020-7-30 17:34 |系统分类:论文交流

Decomposition of leaf litter mixtures across biomes: The role of litter identity, diversity and soil fauna 

Shixing Zhou1, 2, †, *, Olaf Butenschoen2, 3, †, Sandra Barantal4, Ira Tanya Handa4, 5, Marika Makkonen6, Veronique Vos7, Rien Aerts6, Matty P. Berg8, 9, Brendan McKie10, 11, Jasper Van Ruijven7, Stephan Hättenschwiler4, $, Stefan Scheu2, 12, $

https://doi.org/10.1111/1365-2745.13452

https://www.researchgate.net/publication/342455016 

Abstract

1. At broad spatial scales, the factors regulating litter decomposition remain ambiguous, with the understanding of these factors largely based on studies investigating site-specific single litter species, whereas studies using multi litter species mixtures across sites are rare.

2. We exposed in microcosms containing single species and all possible mixtures of four leaf litter species differing widely in initial chemical and physical characteristics from a temperate forest to the climatic conditions of four different forests across the Northern Hemisphere for one year.

3. Calcium, magnesium and condensed tannins predicted litter mass loss of single litter species and mixtures across forest types and biomes, regardless of species richness and microarthropod presence. However, relative mixture effects differed among forest types and varied with the access to the litter by microarthropods. Access to the microcosms by microarthropods modified the decomposition of individual litter species within mixtures, which differed among forest types independent of litter species richness and composition of litter mixtures. However, soil microarthropods generally only little affected litter decomposition.

4. Synthesis. We conclude that litter identity is the dominant driver of decomposition across different forest types and the non-additive litter mixture effects vary among biomes despite identical leaf litter chemistry. These results suggest that across large spatial scales the environmental context of decomposing litter mixtures, including microarthropod communities, determine the decomposition of litter mixtures besides strong litter trait based effects.

 

Keywords: Mass loss; Litter diversity; Litter identity; Litter traits; Soil fauna; Microarthropods; Plant–soil (below-ground) interactions.

image.png





https://wap.sciencenet.cn/blog-3346625-1244280.html

上一篇:N deposition significantly reduces soil respiration
收藏 IP: 218.6.135.*| 热度|

0

该博文允许注册用户评论 请点击登录 评论 (0 个评论)

数据加载中...

Archiver|手机版|科学网 ( 京ICP备07017567号-12 )

GMT+8, 2024-3-29 16:33

Powered by ScienceNet.cn

Copyright © 2007- 中国科学报社

返回顶部