Effects of soil fauna on litter decomposition using ﬁeld microcosms across 16 co-occurring temperate tree species

IF 0.9 4区农林科学 Q3 FORESTRY

Australian Forestry Pub Date : 2021-01-02 DOI:10.1080/00049158.2020.1820687

P. Zan, T. Sun, Z. Mao

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引用次数: 1

Abstract

ABSTRACT Litter decomposition is an important part of the carbon and nutrient cycles in terrestrial ecosystems. However, understanding of the contribution of soil fauna to litter decomposition and the relationship between soil fauna and litter quality is limited. Using custom-made ﬁeld microcosms, we conducted a two-year experiment to study the effects of soil fauna on litter decomposition and the relationship between soil fauna and litter quality for 16 co-occurring species in a Chinese temperate forest. Our results showed that soil fauna changed the litter decomposition rate by −13.0–34.0%, with an average of +13.1% across the 16 species studied. Moreover, the effects of soil fauna were correlated with initial litter quality. Fauna effects were positively correlated with concentrations of non-structural carbohydrates and nitrogen and negatively correlated with tannin and lignin concentrations. Our study suggests that soil fauna can significantly increase decomposition rates in temperate forest. Initial litter quality, especially in relation to non-structural carbohydrate, nitrogen, lignin and tannin concentrations, may largely explain the effects of soil fauna on decomposition.

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土壤动物群对16种共存温带树种枯枝落叶分解的影响

摘要垃圾分解是陆地生态系统碳和营养循环的重要组成部分。然而，对土壤动物对枯枝落叶分解的贡献以及土壤动物与枯枝落叶质量之间的关系的了解是有限的。利用定制的野外微观世界，我们进行了一项为期两年的实验，研究了中国温带森林中16个共存物种的土壤动物群对枯枝落叶分解的影响以及土壤动物群与枯枝落叶质量之间的关系。我们的研究结果表明，土壤动物群使枯枝落叶分解率变化了−13.0–34.0%，在所研究的16个物种中，平均变化率为+113.1%。此外，土壤动物的影响与最初的垃圾质量有关。动物区系效应与非结构碳水化合物和氮的浓度呈正相关，与单宁和木质素的浓度呈负相关。我们的研究表明，土壤动物可以显著提高温带森林的分解率。最初的枯枝落叶质量，特别是与非结构性碳水化合物、氮、木质素和单宁浓度有关的质量，可以在很大程度上解释土壤动物对分解的影响。

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来源期刊

Australian Forestry FORESTRY-

CiteScore

3.70

自引率

4.80%

发文量

审稿时长

>12 weeks

期刊介绍： Australian Forestry is published by Taylor & Francis for the Institute of Foresters of Australia (IFA) for scientific, technical, and professional communication relating to forestry in the Asia Pacific.