Response of nutrient resorption of <i>Leymus chinensis</i> to nitrogen and phosphorus addition in a meadow steppe of northeast China

Shi, Baoku; Ling, Xiaoli; Cui, Haiying; Song, Wenzheng; Gao, Ying; Sun, Wei

doi:10.1111/plb.13153

Cited by 12 publications

(8 citation statements)

References 63 publications

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“…The leaf area and N concentrations varied between the different N treatments, with a significant increase in the leaf N concentrations under higher N rates. However, the N addition rates had no, or even negative effects, on the specific leaf area, aligning with previous field research and recent meta-analyses (Lü et al, 2016;Zhang et al, 2018;Shi et al, 2020). Our results revealed that the leaf area, LNC mass , and N absorption between shrub patches were stimulated by N, whereas N had no effect on the specific leaf areas and LNC area between the shrubs.…”

Section: Discussionsupporting

confidence: 90%

Shrub encroachment alters plant trait response to nitrogen addition in a semi-arid grassland

Liu

Yang

et al. 2023

Front. Plant Sci.

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Encroachment of shrubs over large regions of arid and semi-arid grassland can affect grassland traits and growth under a background of increasing nitrogen (N) deposition. However, the effects of N input rates on species traits and the growth of shrubs on grasslands remain unclear. We examined the effects of six different N addition rates on the traits of Leymus chinensis in an Inner Mongolia grassland encroached by the leguminous shrub, Caragana microphylla. We randomly selected 20 healthy L. chinensis tillers within shrubs and 20 tillers between shrubs in each plot, measuring the plant height, number of leaves, leaf area, leaf N concentration per unit mass (LNCmass), and aboveground biomass. Our results showed that N addition significantly enhanced the LNCmass of L. chinensis. The aboveground biomass, heights, LNCmass, leaf area, and leaf number of plants within the shrubs were higher than those between shrubs. For L. chinensis growing between shrubs, the LNCmass and leaf area increased with N addition rates, leaf number and plant height had binomial linear relationships to N addition rates. However, the number of leaves, leaf areas and heights of plants within shrubs did not vary under various N addition rates. Structural Equation Modelling revealed N addition had an indirect effect on the leaf dry mass through the accumulation of LNCmass. These results indicate that the response of dominant species to N addition could be regulated by shrub encroachment and provide new insights into management of shrub encroached grassland in the context of N deposition.

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Section: Discussionsupporting

confidence: 90%

Shrub encroachment alters plant trait response to nitrogen addition in a semi-arid grassland

Liu

Yang

et al. 2023

Front. Plant Sci.

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“…N addition led to an increase in the LN of the two species ( Figure 1 ), which corroborates the results of previous studies ( Huang et al, 2012 ; Lü et al, 2013 ). Nitrogen addition caused an increase in soil inorganic N concentrations, which subsequently enhanced the N concentrations in the leaves ( Shi et al, 2020 ). Moreover, N addition increased the re-absorption rate of plant N ( Lü et al, 2012 ; Cao et al, 2021 ), which in turn increased the plant N content.…”

Section: Discussionmentioning

confidence: 99%

Leaf Functional Traits of Two Species Affected by Nitrogen Addition Rate and Period Not Nitrogen Compound Type in a Meadow Grassland

et al. 2022

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Plasticity of plant functional traits plays an important role in plant growth and survival under changing climate. However, knowledge about how leaf functional traits respond to the multi-level N addition rates, multiple N compound and duration of N application remains lacking. This study investigated the effects of 2-year and 7-year N addition on the leaf functional traits of Leymus chinensis and Thermopsis lanceolata in a meadow grassland. The results showed that the type of N compounds had no significant effect on leaf functional traits regardless of duration of N application. N addition significantly increased the leaf total N content (LN) and specific leaf area (SLA), and decreased the leaf total P content (LP) and leaf dry matter content (LDMC) of the two species. Compared with short-term N addition, long-term N addition increased LN, LP, SLA, and plant height, but decreased the LDMC. In addition, the traits of the two species were differentially responsive to N addition, LN and LP of T. lanceolata were consistently higher than those of L. chinensis. N addition would make L. chinensis and T. lanceolata tend to “quick investment-return” strategy. Our results provide more robust and comprehensive predictions of the effects of N deposition on leaf traits.

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“…For instance, in a subtropical forest, the leaf [N] did not respond to N addition, but [P] increased, resulting in a decrease in the N:P of leaves [22]. In grassland, although N addition reduced the N resorption efficiency (NRE), it significantly promoted an increase in leaf [N], [P], and N:P [23]. A similar response was found in N and P allocation patterns in leaves in a wetland [24].…”

Section: Introductionmentioning

confidence: 99%

Response of Plant and Soil N, P, and N:P Stoichiometry to N Addition in China: A Meta-Analysis

Chen

Zhang

et al. 2023

Plants

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Nitrogen (N) and phosphorus (P) are key elements essential for plant growth and development. Due to fertilizer application, rapid urbanization, and fossil fuel combustion, nitrogen deposition has reached relatively high levels in China. However, there is still uncertainty regarding the response of N:P stoichiometry in plants and soil to N deposition across different ecosystems. Therefore, a meta-analysis was conducted using 845 observations from 75 studies to evaluate the response of plant and soil N and P concentrations and N to P ratios across various ecosystems to N addition. The analysis revealed that N concentration and N:P stoichiometry in plants and soil increased under N addition, while P concentration in plants and soil decreased on average. Furthermore, the magnitude of these responses was related to the N input rate and experimental duration. Finally, the effects of N addition on N concentration, P concentration, and N:P in terrestrial ecosystems would alter their allocation patterns, depending on relevant climate factors such as mean annual temperature and mean annual precipitation. This study highlights the ecological impact of N addition on the biogeochemical cycling of major elements (N and P) in terrestrial ecosystems in China. These findings are necessary for improving our understanding of the characteristics of plant ecological stoichiometry and helping to plan measures for increasing N deposition.

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Response of nutrient resorption of Leymus chinensis to nitrogen and phosphorus addition in a meadow steppe of northeast China

Cited by 12 publications

References 63 publications

Shrub encroachment alters plant trait response to nitrogen addition in a semi-arid grassland

Shrub encroachment alters plant trait response to nitrogen addition in a semi-arid grassland

Leaf Functional Traits of Two Species Affected by Nitrogen Addition Rate and Period Not Nitrogen Compound Type in a Meadow Grassland

Response of Plant and Soil N, P, and N:P Stoichiometry to N Addition in China: A Meta-Analysis

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