Biochar amendment changes the effects of nitrogen deposition on soil enzyme activities in a Moso bamboo plantation

Peng, Chunju; Li, Quan; Zhang, Zhiting; Wu, Zhizhuang; Song, Xuzhong; Zhou, Guomo; Song, Xinzhang

doi:10.1080/13416979.2019.1646970

Cited by 15 publications

(7 citation statements)

References 71 publications

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“…However, some studies found that N enrichment lowered P resorption ( van Heerwaarden et al, 2003 ; Lü et al, 2013 , 2020 ) because N enrichment enhanced soil P availability by stimulating extracellular phosphatase enzyme activity ( Chen et al, 2020 ; Lü et al, 2020 ). In the present study, and in previous studies at the same site, N addition significantly increased soil TP and AP concentrations ( Supplementary Table A3 ) and acid phosphatase enzyme activity ( Peng et al, 2019 ) and then decreased PRE. In addition, foliar PRE was significantly negatively correlated with soil TP concentration ( Supplementary Table A3 ), which supports the argument that N addition decreases foliar PRE by increasing soil P availability.…”

Section: Discussionsupporting

confidence: 83%

“…To mitigate soil acidification caused by N addition, biochar was applied to soil in a Moso bamboo plantation that had received N input for approximately 21 months. Our previous studies found that the combination of N addition and biochar amendment increased soil pH and affected soil nutrient and enzyme activities ( Li et al, 2018b ; Peng et al, 2019 ), which influence leaf nutrient resorption. However, the effects of N deposition and biochar amendment and their interactions on leaf nutrient resorption in Moso bamboo forests are still unclear.…”

Section: Introductionmentioning

confidence: 99%

“…Our previous study found that N addition increased foliar N and P concentrations and soil available N (AN) and P (AP), but decreased soil pH in Moso bamboo plantations ( Li et al, 2016 ; Song et al, 2016a ). In addition, biochar applications significantly increased soil pH and bacterial diversity and decreased soil urease and acid phosphatase activities ( Li et al, 2018b ; Peng et al, 2019 ). To mitigate soil acidification caused by N addition, biochar was applied to soil in a Moso bamboo plantation that had received N input for approximately 21 months.…”

Section: Introductionmentioning

confidence: 99%

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Biochar Amendment Alters the Nutrient-Use Strategy of Moso Bamboo Under N Additions

Gao

Zhang

et al. 2021

Front. Plant Sci.

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Nutrient resorption can affect plant growth, litter decomposition, and nutrient cycling. Although the effects of nitrogen (N) and biochar fertilizers on soil nutrient concentrations and plant nutrient uptake have been studied, an understanding of how combined applications of N and biochar affect plant nutrient resorption in plantations is lacking. In this study, we applied N (0, 30, 60, and 90 kg N ha−1 yr−1 defined as N0, N30, N60, and N90, respectively) and biochar (0, 20, and 40 t biochar ha−1 defined as BC0, BC20, and BC40, respectively) to the soil of a Moso bamboo plantation. We investigated the effects of these treatments on N and phosphorus (P) resorption by young and mature bamboo plants, as well as the relationships between nutrient resorption and leaf and soil nutrient concentrations. Young bamboo showed significantly greater foliar N resorption efficiency (NRE) and P resorption efficiency (PRE) than mature bamboo. N addition alone significantly increased the N resorption proficiency (NRP) and P resorption proficiency (PRP) but significantly decreased the NRE and PRE of both young and mature bamboo. In both the N-free and N-addition treatments, biochar amendments significantly reduced the foliar NRE and PRE of young bamboo but had the opposite effect on mature bamboo. Foliar NRE and PRE were significantly negatively correlated with fresh leaf N and P concentrations and soil total P concentration but significantly positively correlated with soil pH. Our findings suggest that N addition inhibits plant nutrient resorption and alters the nutrient-use strategy of young and mature bamboo from “conservative consumption” to “resource spending.” Furthermore, biochar amendment enhanced the negative effect of N addition on nutrient resorption in young bamboo but reduced the negative effect on that of mature bamboo under N-addition treatments. This study provides new insights into the combined effects of N and biochar on the nutrient resorption of Moso bamboo and may assist in improving fertilization strategies in Moso bamboo plantations.

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Section: Discussionsupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Biochar Amendment Alters the Nutrient-Use Strategy of Moso Bamboo Under N Additions

Gao

Zhang

et al. 2021

Front. Plant Sci.

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“…Despite increasing evidence demonstrating the advantages of biochar in enhancing soil C sequestration (Han et al ., 2022; Hernandez‐Soriano et al ., 2016; Zhang, Voroney & Price, 2015 a ), whether and how biochar addition affects soil C dynamics over time remains unclear. Indeed, several recent studies have shown that effects of biochar addition on soil C sequestration can be positive (Ameloot et al ., 2014; Azlan Halmi et al ., 2018), negative (Peng et al ., 2019; Tian et al ., 2016) or neutral (Elzobair et al ., 2016; Rafael et al ., 2019). Such large discrepancies illustrate a poor understanding of the underlying mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Trade‐offs in carbon‐degrading enzyme activities limit long‐term soil carbon sequestration with biochar addition

Feng

Sinsabaugh

et al. 2023

Biological Reviews

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Biochar amendment is one of the most promising agricultural approaches to tackle climate change by enhancing soil carbon (C) sequestration. Microbial-mediated decomposition processes are fundamental for the fate and persistence of sequestered C in soil, but the underlying mechanisms are uncertain. Here, we synthesise 923 observations regarding the effects of biochar addition (over periods ranging from several weeks to several years) on soil C-degrading enzyme activities from 130 articles across five continents worldwide. Our results showed that biochar addition increased soil ligninase activity targeting complex phenolic macromolecules by 7.1%, but suppressed cellulase activity degrading simpler polysaccharides by 8.3%. These shifts in enzyme activities explained the most variation of changes in soil C sequestration across a wide range of climatic, edaphic and experimental conditions, with biochar-induced shift in ligninase:cellulase ratio correlating negatively with soil C sequestration. Specifically, short-term (<1 year) biochar addition significantly reduced cellulase activity by 4.6% and enhanced soil organic C sequestration by 87.5%, whereas no significant responses were observed for ligninase activity and ligninase:cellulase ratio. However, long-term (≥1 year) biochar addition significantly enhanced ligninase activity by 5.2% and ligninase:cellulase ratio by 36.1%, leading to a smaller increase in soil organic C sequestration (25.1%). These results suggest that shifts in enzyme activities increased ligninase:cellulase ratio with time after biochar addition, limiting long-term soil C sequestration with biochar addition. Our work provides novel evidence to explain the diminished soil C sequestration with long-term biochar addition and suggests that earlier studies may have overestimated soil C sequestration with biochar addition by failing to consider the physiological acclimation of soil microorganisms over time.

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“…Our previous study found that N addition increased foliar N and P concentrations and soil available N (AN) and available P (AP) in Moso bamboo plantations (Li et al 2016;Song et al 2016c). In addition, biochar applications signi cantly increased soil bacterial diversity and decreased soil urease and acid phosphatase activities Peng et al 2019). However, the effects of N deposition and biochar amendment on leaf nutrient resorption in Moso bamboo forests are still unclear.…”

Section: Introductionmentioning

confidence: 99%

Biochar Amendment Alters The Nutrient-Use Strategy of Moso Bamboo Under N Additions

Gao

Zhang

et al. 2020

Preprint

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Background: While we know that N and biochar fertilizers affect soil nutrient concentrations and plant nutrient uptake, our understanding of how combined applications of N and biochar affect plant nutrient resorption in plantations is largely inadequate. A field experiment was conducted to investigate the effects of N (0, 30, 60, and 90 kg N ha-1 yr-1 or N0, N30, N60, and N90), in combination with biochar (0, 20, and 40 t biochar ha-1 or BC0, BC20, and BC40) on N and P resorption by young and mature bamboo plants as well as the relationship between nutrient resorption and leaf nutrient and soil concentrations. Fresh and senescent leaf samples were collected in July 2016 and March 2017, respectively.Results: Young bamboo showed significantly greater foliar N resorption efficiency (NRE) and P resorption efficiency (PRE) than mature bamboo. N additions alone significantly increased the N resorption proficiency (NRP) and P resorption proficiency (PRP) but decreased the NRE and PRE of both young and mature bamboo. In both the N-free (control) and N addition treatments, biochar amendments significantly reduced the foliar NRE and PRE of young bamboo but had the opposite effect on mature bamboo. Foliar NRE and PRE were significantly correlated with fresh leaf N and P concentrations and soil total P concentration. Conclusion: Our findings suggest that N addition inhibits plant nutrient resorption and alters the nutrient-use strategy of young and mature bamboo from “conservative consumption” to “resource spending.” Furthermore, biochar amendment enhanced the negative priming effect of N addition on nutrient resorption of young bamboo but reduced the negative effect on that of mature bamboo. This study provides new insights into the combined effects of N and biochar additions on the nutrient resorption of Moso bamboo and may assist in improving fertilization strategies in Moso bamboo plantations.

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Biochar amendment changes the effects of nitrogen deposition on soil enzyme activities in a Moso bamboo plantation

Cited by 15 publications

References 71 publications

Biochar Amendment Alters the Nutrient-Use Strategy of Moso Bamboo Under N Additions

Biochar Amendment Alters the Nutrient-Use Strategy of Moso Bamboo Under N Additions

Trade‐offs in carbon‐degrading enzyme activities limit long‐term soil carbon sequestration with biochar addition

Biochar Amendment Alters The Nutrient-Use Strategy of Moso Bamboo Under N Additions

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