Forest soil acidification consistently reduces litter decomposition irrespective of nutrient availability and litter type

Shen, Ying; Tian, Dashuan; Hou, Junbo; Zhang, Ruiyang; Li, Zhaolei; Chen, Han Y. H.; Wei, Xuehong; Zhang, Xinyu; He, Yicheng

doi:10.1111/1365-2435.13925

Cited by 25 publications

(13 citation statements)

References 49 publications

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“…The contents of N and P in the litter for the three tea cultivars were higher than those of global plants (Kang et al 2010), indicating that the tea cultivars had high nutrient utilization e ciencies. Litter C:N is an indicator of litter decomposition rate, and lower litter C:N had higher litter decomposition rate due to strong the microbial activity and invertebrate digestion (Shen et al 2021). In this study, litter C:N in the JG was higher than that of the RG and SX, indicating that the JG had higher litter decomposition rate than the RG and SX, and the JG had high nutrient turnover and cycling.…”

Section: )mentioning

confidence: 54%

Nutrient resorption and stoichiometric characteristics of Wuyi rock tea cultivars

Zhu

Peng

et al. 2022

Preprint

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Nutrient resorption is an important strategy for obtaining nutrition, it determines the ecosystems productivity and nutrient cycling. The Wuyi rock tea cultivars are used as important species for controlling soil erosion in hilly mountainous areas, but the mechanism of nutrient resorption is still unclear. The Wuyi Rock tea (Camellia sinensis) plantations are the main economic crops in Fujian province, China, and also have important ecological functions. The tea plants can absorb and conserve nutrients from the senesced leaves, but foliar nutrient resorptions of Wuyi Rock tea cultivars have not been well quantified. Three Wuyi Rock tea cultivars (e.g., Wuyi Jingui, Wuyi Rougui, and Wuyi Shuixian) were chosen in the Wuyishan National Soil and Water Conservation & Science and Technology Demonstration Park this study. Resorption efficiencies of nitrogen (NRE), phosphorus (PRE), potassium (KRE) and their stoichiometric characteristics were determined. KRE and NRE of the three tea cultivars were significantly higher than PRE, indicating that P was more limited than N and K. With the exception of Wuyi Rougui, the other two cultivars (Wuyi Jingui and Wuyi Shuixian) had strong stability in the leaf N and P contents under the changing soil environments. Leaf nutrient and leaf traits such as leaf thickness and specific leaf area had significant correlations with nutrient resorption efficiencies, indicating that leaf nutrient and traits can be used as indicators for nutrient resorption status. Wuyi Rock tea cultivars have strong adaptability to the environment, and they also have high carbon sequestration ability. Simultaneously, Wuyi Rock tea cultivars can reabsorb nutrients and be introduced into nutrient poor mountainous areas for soil and water conservation.

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Section: )mentioning

confidence: 54%

Nutrient resorption and stoichiometric characteristics of Wuyi rock tea cultivars

Zhu

Peng

et al. 2022

Preprint

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“…There have been relatively few studies on the fine-root decomposition of different stand ages; possible explanations for the difference in fine-root decomposition are as follows. Compared with other young stand ages, the older stand age (45 Y) experienced decreases in soil pH after litter addition; thus, soil acidification inhibited litter decomposition (Shen et al, 2021). In addition, a less complex but more specialized microbial network resulted in faster fine-root decomposition in young stands of R. pseudoacacia (data not shown).…”

Section: Figurementioning

confidence: 94%

“…Soil pH declined during the decomposition process, which had a negative effect on microbial process that are difficult to breakdown (Li et al, 2022). es (Tanikawa et al, 2018;Shen et al, 2021), and thus litter carbon and nitrogen losses decreased during the late period. There are two mechanisms underlying nutrient availability in the decomposition process: microbial and chemical mechanisms (Jiang et al, 2018).…”

Section: Relative Importance Of Influencing Factor On Litter C and N ...mentioning

confidence: 97%

“…Low-quality litters (high C:N) tended to degrade slowly because they had more recalcitrant substances, and the microbial community needed to mine N from external sources (such as SOM) to degrade. Therefore, high-quality litters tended to degrade more rapidly than low-quality litters (Prieto et al, 2019;Shen et al, 2021). Second, higher leaf litter C and N losses compared with those of root litter may be related to the soil environment.…”

Section: Figurementioning

confidence: 99%

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Litter C and N losses at different decomposition stages of Robinia pseudoacacia: The weaker effects of soil enzyme activities compared with those of litter quality and the soil environment

Su¹,

Zhu²,

Wang³

et al. 2022

Front. Environ. Sci.

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Litter decomposition promotes soil carbon and nitrogen cycling and is driven by litter quality, the soil environment and enzyme activities. The relative importance of these factors may change during the litter decomposition, however, very few studies have emphasized the temporal dynamics of these factors across plantation ecosystem, which limits our understanding of litter decomposition. To evaluate the temporal dynamic of above-mentioned litter decomposition drivers, we collected leaf and fine root litters from four different years of restoration of Robinia pseudoacacia on the Loess plateau of China and placed them on soil from the corresponding sites to incubate for 210 days. We constructed successive litter decomposition stages according to litter mass-loss interval, and we also used partial least squares path modelling (PLSPM) to evaluate the relative importance of these drivers. Our results showed that the C and N losses in leaf litter were significantly higher than those in root litter regardless of stand age. Leaf litter C and N losses increased with restoration duration, while root litter C and N showed an opposing trend with restoration duration, with the lowest levels of losses occurring at older stand ages. The initial litter quality, litter quality and the soil environment regulated leaf and root litter C loss, and enzyme activity also determined root C loss. Litter quality, the soil environment and enzyme activity influence leaf litter N loss, while root N loss was controlled by initial litter quality and the soil environment. Overall, enzyme activities had a relatively weak influence on litter C and N losses, and they impacted litter C and N losses only during the early stages. Therefore, our results revealed substantial differences in different restoration durations and litter types at the different decomposition stages, which has important significance for understanding carbon and nitrogen cycling on the Loess Plateau of China.

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“…This may be due to the nutrients released by the decomposition of plant metabolites being predominantly used for storage in the winter, with the growth rate slowing down or withering, resulting in the enrichment of the total carbon in the litter. The total carbon release of branch litter in large gaps was stronger than in other gaps, which may be due to the higher soil pH value in large gaps, increasing the abundance and diversity of soil animals, and thus accelerating litter Meanwhile, the soil pH value inputs energy-rich available carbon through the plant rhizosphere excitation effect, enhances soil microbial enzyme secretion and organic matter mineralization, and further promotes the whole process of carbon release (Shen et al 2021).…”

Section: Total Carbon Contents During Litter Decomposition In Canopy ...mentioning

confidence: 99%

Canopy gaps control litter decomposition and nutrient release in subtropical forests

Chen¹,

Zhu²,

Wang³

et al. 2023

Preprint

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Aims Forest litter plays a critical role in the nutrient cycle of forest ecosystems, and the changes in the microenvironment brought about by the formation of a canopy gap affect litter decomposition and nutrient release. However, the pathway through which canopy gaps influence litter decomposition and nutrient release remains insufficiently understood, which limits our understanding of the relationship between forest soil material cycling and the environmental heterogeneity of canopy gaps. Methods Here, we collected samples of the leaf and branch litter of Castanopsis kawakamii natural forest during decomposition for a whole year, aiming to explore the characteristics of litter mass remaining and nutrient release in canopy gaps and non-gaps. Meanwhile, combined with environmental factors, taxonomic diversity, and soil microbial diversity, we aimed to reveal the primary factors influencing litter decomposition for leaf and branch litter. Results We found that the litter mass remaining of leaves and branches in medium gaps (50–100 m2) was lower than that of other gaps, and the leaf litter decomposition rate was higher than that of branch litter decomposition. Likewise, litter mass remaining, total carbon and nitrogen release, and enrichment were found to be asynchronous. Conclusions We highlight that the environmental heterogeneity caused by gap sizes significantly influenced the soil microbial community activity and taxonomic diversity. Furthermore, the asynchronous nature of taxonomic diversity and soil microbial diversity depending on canopy gap size affected mass remaining and nutrient release for both leaf and branch litter, thus comprehensively influencing litter decomposition and nutrient release in subtropical forests.

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Forest soil acidification consistently reduces litter decomposition irrespective of nutrient availability and litter type

Cited by 25 publications

References 49 publications

Nutrient resorption and stoichiometric characteristics of Wuyi rock tea cultivars

Nutrient resorption and stoichiometric characteristics of Wuyi rock tea cultivars

Litter C and N losses at different decomposition stages of Robinia pseudoacacia: The weaker effects of soil enzyme activities compared with those of litter quality and the soil environment

Canopy gaps control litter decomposition and nutrient release in subtropical forests

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