The response of soil surface enzyme activities to short time warming and litter decomposition in mountain forest

Xiaoli, 陈晓丽 Chen; Genxu, 王根绪 Wang; Yan, 杨燕 Yang; Yong, Yang

doi:10.5846/stxb201312182982

Cited by 2 publications

(1 citation statement)

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“…Peroxidase is an important enzyme that degrades lignin and keratin during litter decomposition. Our results showed that the response of peroxidase activity to warming did not show a consistent increase but showed a fluctuating trend, with the highest activity under control conditions, similar to the results of Chen et al [49]. This may have been caused by the effect of warming on the growth of white rot fungi that secrete lignin enzymes by reducing the content of available carbon in the litter.…”

Section: Effects Of Warming On the Activity Of Enzymes In Forest Litt...supporting

confidence: 87%

Effects of Simulated Warming on Bacterial Community Structure in Litters of Chinese Fir Based on Displacement Test

Wu,

Li,

Zhu

et al. 2024

Forests

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Bacterial communities are vital factors for regulating litter decomposition in forests. With the gradual increase in global climate change, the effects of global warming on the decomposition of forest litter have become a cause for concern. In this study, we used a displacement test to simulate the effects of warming (+2.5, +4.6, and +6.5 °C) on the composition and diversity of bacterial communities in Chinese fir litters based on the natural differences in temperature between the elevation of Wuyi Mountain. Warming significantly increased the abundance and diversity of bacterial communities and altered the functional abundance of bacterial communities. Warming significantly increased the relative abundance of Acidothermus and decreased that of Bacteroidetes and Mucilaginibacter. Structural variations in the bacterial communities were closely related to the chemical properties of the litter. The relative abundance of Planctomycetes exhibited a positive association with nitrogen content and a negative association with cellulose content, whereas phosphorus content was the main driving factor of Acidothermus abundance. Warming increased the complexity of the bacterial community structure, which promoted the decomposition of Chinese fir litter and accelerated nutrient cycling in the Chinese fir plantation ecosystem.

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Section: Effects Of Warming On the Activity Of Enzymes In Forest Litt...supporting

confidence: 87%

Effects of Simulated Warming on Bacterial Community Structure in Litters of Chinese Fir Based on Displacement Test

Wu,

Li,

Zhu

et al. 2024

Forests

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Differential responses of carbon‐degrading enzyme activities to warming: Implications for soil respiration

Chen

Luo

García‐Palacios

et al. 2018

Global Change Biology

151

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Extracellular enzymes catalyze rate-limiting steps in soil organic matter decomposition, and their activities (EEAs) play a key role in determining soil respiration (SR). Both EEAs and SR are highly sensitive to temperature, but their responses to climate warming remain poorly understood. Here, we present a meta-analysis on the response of soil cellulase and ligninase activities and SR to warming, synthesizing data from 56 studies. We found that warming significantly enhanced ligninase activity by 21.4% but had no effect on cellulase activity. Increases in ligninase activity were positively correlated with changes in SR, while no such relationship was found for cellulase. The warming response of ligninase activity was more closely related to the responses of SR than a wide range of environmental and experimental methodological factors. Furthermore, warming effects on ligninase activity increased with experiment duration. These results suggest that soil microorganisms sustain long-term increases in SR with warming by gradually increasing the degradation of the recalcitrant carbon pool.

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The response of soil surface enzyme activities to short time warming and litter decomposition in mountain forest

Cited by 2 publications

References 0 publications

Effects of Simulated Warming on Bacterial Community Structure in Litters of Chinese Fir Based on Displacement Test

Effects of Simulated Warming on Bacterial Community Structure in Litters of Chinese Fir Based on Displacement Test

Differential responses of carbon‐degrading enzyme activities to warming: Implications for soil respiration

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