Increased precipitation modulates the influence of nitrogen and litter inputs on the nutrient resorption proficiency rather than efficiency of Leymus chinensis

Plant Ecology ◽  
2017 ◽  
Vol 219 (2) ◽  
pp. 217-230 ◽  
Author(s):  
Yue Shen ◽  
Xin Yang ◽  
Xiao Sun ◽  
Wenqing Chen ◽  
Gaowen Yang ◽  
...  
Keyword(s):  
Nutrient Resorption ◽  
Leymus Chinensis ◽  
Resorption Proficiency ◽  
Nutrient Resorption Proficiency

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

2021 ◽  
Vol 12 ◽  
Author(s):  
Jinpei Gao ◽  
Quan Li ◽  
Junbo Zhang ◽  
Kunkai Cui ◽  
Zhizhuang Wu ◽  
...  
Keyword(s):  
Soil Nutrient ◽  
Moso Bamboo ◽  
Nutrient Resorption ◽  
Nutrient Concentrations ◽  
Plant Nutrient ◽  
N Addition ◽  
Resorption Proficiency ◽  
Nutrient Use ◽  
Negative Effect ◽  
N Resorption

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.

scholarly journals   Nitrogen and phosphorus resorption of Artemisia scoparia, Chenopodium acuminatum, Cannabis sativa, and Phragmites communis under nitrogen and phosphorus additions in a semiarid grassland, China

2012 ◽  
Vol 58 (No. 10) ◽  
pp. 446-451 ◽  
Author(s):  
L.J. Li ◽  
D.H. Zeng ◽  
R. Mao ◽  
Z.Y. Yu
Keyword(s):  
Cannabis Sativa ◽  
Nutrient Resorption ◽  
Soil N ◽  
Resorption Efficiency ◽  
Phragmites Communis ◽  
Nitrogen And Phosphorus ◽  
Resorption Proficiency ◽  
Artemisia Scoparia ◽  
N Resorption ◽  
P Addition

A factorial nitrogen (N) × phosphorus (P) addition experiment was conducted to evaluate responses of leaf nutrient resorption to increased soil N and P availability in a semiarid grassland in Keerqin Sandy Lands, China. Four plant species were selected, among which Artemisia scoparia and Chenopodium acuminatum were dominant species in the control and P-added plots, and Cannabis sativa and Phragmites communis were dominant in the N- and N + P-treated plots. Results showed that N and P resorption varied substantially among species (P < 0.01). A general trend of decrease in N resorption efficiency (NRE) and N resorption proficiency (NRP) was observed in response to increased soil N availability for all species, except P. communis only for NRE. Similarly, P resorption proficiency (PRP) decreased in response to P addition for all species, whereas P resorption efficiency (PRE) was not affected by P addition. Species responded differently in terms of PRE and PRP to N addition, whereas no changes in NRE and NRP occurred in response to P addition except P. communis for NRE. Our results suggest that increased soil nutrient availability can influence plant-mediated nutrient cycling directly by changing leaf nutrient resorption and indirectly by altering species composition in the sandy grassland.  

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

2020 ◽  
Author(s):  
Jinpei Gao ◽  
Quan Li ◽  
Junbo Zhang ◽  
Kunkai Cui ◽  
Zhizhuang Wu ◽  
...  
Keyword(s):  
Moso Bamboo ◽  
Nutrient Resorption ◽  
Plant Nutrient ◽  
N Addition ◽  
Resorption Efficiency ◽  
Resorption Proficiency ◽  
Nutrient Use ◽  
N Resorption ◽  
Biochar Amendment ◽  
N Additions

Abstract 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.

Biomass allocation between leaf and stem regulates community-level plant nutrient resorption efficiency response to nitrogen and phosphorus additions in a temperate wetland of Northeast China

2020 ◽  
Author(s):  
Yun Zhang ◽  
Gui-sheng Yang ◽  
Fu-Xi Shi ◽  
Rong Mao
Keyword(s):  
Species Composition ◽  
Nutrient Availability ◽  
Northeast China ◽  
Community Level ◽  
Nutrient Resorption ◽  
Plant Nutrient ◽  
Resorption Efficiency ◽  
Resorption Proficiency ◽  
Nutrient Resorption Efficiency ◽  
Temperate Wetland

Abstract Aims Nutrient resorption is a crucial component of plant nutrient use strategy, yet the controls on the responses of community-level nutrient resorption to altered nutrient availability remain unclear. Here, we addressed two questions: Did leaf and stem nutrient resorption respond consistently to increased nutrient availability? Was community-level plant nutrient resorption response after nutrient enrichment driven by the intra-specific plasticity in plant nutrient resorption or by altered species composition? Methods We investigated the changes in aboveground biomass, and leaf and stem nutrient resorption of individual species after three-year nitrogen (N) and phosphorus (P) additions, and assessed community-level nutrient resorption response to three-year nutrient additions in a graminoid-dominated temperate wetland, Northeast China. Important findings For both leaves and stems, N and P additions did not affect nutrient resorption efficiency, but they decreased respective nutrient resorption proficiency. Similarly, community-level N and P resorption proficiency declined with respective nutrient addition. Community-level N and P resorption efficiency was reduced by N addition primarily due to altered community composition and declined leaf:stem ratio. These results suggest that leaf and stem nutrient resorption processes exhibit consistent responses to increasing nutrient availability in the temperate wetland. These findings highlight the importance of altered species composition and biomass allocation between leaf and stem in driving community-level nutrient resorption response to nutrient enrichment.

scholarly journals Appropriate nitrogen addition regulates reproductive strategies of Leymus chinensis

2021 ◽  
pp. e01599
Author(s):  
Li Liu ◽  
Shining Zuo ◽  
Mingyan Ma ◽  
Jiahuan Li ◽  
Lizhu Guo ◽  
...  
Keyword(s):  
Reproductive Strategies ◽  
Nitrogen Addition ◽  
Leymus Chinensis

Nutrient resorption and stoichiometric responses of poplar (Populus deltoids) plantations to N addition in a coastal region of eastern China

2021 ◽  
Author(s):  
Dalong Jiang ◽  
Qian Li ◽  
Qinghong Geng ◽  
Menghua Zhang ◽  
Chonghua Xu ◽  
...  
Keyword(s):  
Eastern China ◽  
Coastal Region ◽  
Nutrient Resorption ◽  
Green Leaf ◽  
Nutrient Concentrations ◽  
N Addition ◽  
Resorption Efficiency ◽  
Nutrient Resorption Efficiency ◽  
Poplar Plantations ◽  
Populus Deltoids

Abstract Aims Leaf nutrient resorption is sensitive to changes in soil nutrients. However, the effects of N deposition on nutrient resorption efficiency (NuRE) in plant macro-nutrients remain unclear. Poplar (Populus deltoids) is one of the most extensively cultivated hardwood species worldwide. We explored general patterns and dominant drivers of NuRE and stoichiometry of poplar plantations in response to N addition. Methods We conducted a 4-year N-addition experiment to explore NuRE and stoichiometric responses to N addition in two poplar (Populus deltoids) plantations (8- and 12-year-old stands) in a coastal region of eastern China. We measured soil and foliar (green and senesced leaves) concentrations of nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), and magnesium (Mg) for a series of N addition treatments including N0 (0 kg N ha ‒1 yr ‒1), N1 (50 kg N ha ‒1 yr ‒1), N2 (100 kg N ha ‒1 yr ‒1), N3 (150 kg N ha ‒1 yr ‒1), and N4 (300 kg N ha ‒1 yr ‒1). Important Findings Consistent for (both) 8- and 12-year-old stands, N addition did not affect the NuRE and stoichiometry (with the exception of CaRE and CaRE:MgRE ratio). NRE-PRE scaling slopes were consistently less than 1.0 under N addition. These results suggest that NRE generally decouples from PRE within each N treatment. Moreover, these results point to robust control of green leaf nutritional status on nutrient resorption processes as indicated by the positive relationships between nutrient resorption efficiency and green leaf nutrient concentrations. Our findings provided a direct evidence that growth in 12-year-old poplar plantations was N-limited in a coastal region of eastern China.

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