Cellulose dominantly affects soil fauna in the decomposition of forest litter: A meta-analysis
Cellulose dominantly affects soil fauna in the decomposition of forest litter: A meta-analysis
复制标题
纤维素在森林凋落物分解中主要影响土壤动物：荟萃分析
DOI：
10.1016/j.geoderma.2020.114620
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发表时间：
2020-11-15
期刊：
影响因子：
6.1
通讯作者：
Ruan, Honghua
中科院分区：
文献类型：
--
作者：
Xu, Xuan;Sun, Yuan;Ruan, Honghua
凋落物分解被广泛认为是连接地上和地下生态过程的重要纽带，包括森林生态系统中土壤有机质的形成和养分循环。土壤动物消耗大量凋落物，在土壤有机质分解中起关键作用。然而，我们对土壤动物对森林凋落物分解的影响仍然知之甚少。通过对来自49项研究的479对观测数据进行荟萃分析，我们发现，土壤动物对森林凋落物分解率的平均贡献率为30.9 +/- 6.8%（平均值和标准误差）。此外，土壤动物对凋落物分解的积极作用随着初始凋落物纤维素浓度的增加而增强，气候越温暖越湿润越明显。我们的研究结果表明，考虑到持续的全球环境变化，土壤动物在凋落物分解中的作用将更加关键。
Litter decomposition is widely acknowledged as a vital connection that links aboveground and belowground ecological processes, including the formation of soil organic matter and nutrient cycling in forest ecosystems. Soil fauna consumes significant quantities of litter and plays a critical role in the decomposition of soil organic matter. However, our understanding of the influences of soil fauna on the decomposition of forest litter remains elusive. Using a meta-analysis of 479 paired observations garnered from 49 studies, we found that, on average, soil fauna contributes 30.9 +/- 6.8% (mean and standard error) to the forest litter decomposition rate. Moreover, the positive effects of soil fauna on litter decomposition increased with the cellulose concentration of the initial litter, and in warmer and moister climates. Our results suggest that the role of soil fauna in litter decomposition will even be more critical in view of ongoing global environmental change.