Effects of plant diversity on semiarid grassland stability depends on functional group composition and dynamics under N and P addition

Chen, Zhifei; Xiong, Peifeng; Zhou, Junjie; Lai, Shuaibin; Jian, Chunxia; Xu, Weizhou; Xu, Bingcheng

doi:10.1016/j.scitotenv.2021.149482

Cited by 15 publications

(14 citation statements)

References 47 publications

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“…Soil nitrogen (N) and phosphorus (P) enrichments shape the stability of aboveground net primary productivity (ANPP) in grassland ecosystems (Carroll et al, 2022; Yang et al, 2022). The global nutrient network experiment (NutNet), conducted in 34 grasslands over 7 years, revealed that N input reduces the stability of ANPP by greatly enhancing inter‐annual variability of annual biomass production (Carroll et al, 2022), and such N‐induced negative effects have also been reported in other studies (Chen et al, 2021; Song, Wan, et al, 2019; Song, Zong, et al, 2019; Yang et al, 2012). The effects of P addition on the stability of ANPP in grassland ecosystems can vary from negative (Carroll et al, 2022; Chen et al, 2021) to positive (Yang et al, 2014) by causing both greater variability and decreased variability in plant productivity (Carroll et al, 2022; Yang, Liu, et al, 2021; Yang, Mariotte, et al, 2021; Yang, Zhang, et al, 2021).…”

Section: Introductionmentioning

confidence: 61%

“…The global nutrient network experiment (NutNet), conducted in 34 grasslands over 7 years, revealed that N input reduces the stability of ANPP by greatly enhancing inter‐annual variability of annual biomass production (Carroll et al, 2022), and such N‐induced negative effects have also been reported in other studies (Chen et al, 2021; Song, Wan, et al, 2019; Song, Zong, et al, 2019; Yang et al, 2012). The effects of P addition on the stability of ANPP in grassland ecosystems can vary from negative (Carroll et al, 2022; Chen et al, 2021) to positive (Yang et al, 2014) by causing both greater variability and decreased variability in plant productivity (Carroll et al, 2022; Yang, Liu, et al, 2021; Yang, Mariotte, et al, 2021; Yang, Zhang, et al, 2021). Although previous field studies have found that the input of single nutrients (N or P) can strongly influence the stability of ANPP (Carroll et al, 2022; Chen et al, 2021), the interactive effects of N and P inputs on temporal stability in grassland ecosystems require further testing (Carroll et al, 2022; Chen et al, 2021).…”

Section: Introductionmentioning

confidence: 61%

“…Jia et al (2021) reported that AMF can increase plant diversity (according to the Shannon–Wiener diversity index) and improve the stability of ANPP in an arid grassland, while the input of N had opposite effects in this environment. Additionally, soil availability of N and P is known to alter the structure and function of AMF in grassland ecosystems (Han et al, 2020; Jiang et al, 2018; Treseder, 2004), potentially influencing the stabilizing effect of fungi on plant communities (Chen et al, 2021). However, field evidence of the independent or interactive effects of AMF and soil enrichment with N and P on the stability of plant communities remains limited.…”

Section: Introductionmentioning

confidence: 99%

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Negative effects of phosphorus addition outweigh effects of arbuscular mycorrhizal fungi and nitrogen addition on grassland temporal stability in the eastern Eurasian desert steppe

Yang

Liang

et al. 2023

Ecology and Evolution

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The temporal stability of grassland plant communities is substantially affected by soil nutrient enrichment. However, the potential main and interactive effects of arbuscular mycorrhizal fungi (AMF) and soil nitrogen (N) and phosphorus (P) enrichment on the stability of plant productivity have not yet been clarified. We combined a three‐year in situ field experiment to assess the impacts of soil fertilization and AMF on the stability of plant productivity. P addition decreased the stability of plant productivity by increasing the standard deviation relative to the mean of plant productivity. However, compared to species richness, the stability of C3 grasses and other functional groups asynchrony were the most important drivers changing the stability of plant productivity. The negative impacts of P addition overrode the impacts of AMF on the stability of plant productivity. Overall, our study suggests the importance of soil nutrient availability over AMF in terms of shaping the stability of plant productivity. Our results also suggest that three‐year anthropogenic soil nutrient enrichment could reduce the stability of plant communities in grassland regardless of AMF in the P‐limited grassland ecosystem.

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Section: Introductionmentioning

confidence: 61%

Section: Introductionmentioning

confidence: 61%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Negative effects of phosphorus addition outweigh effects of arbuscular mycorrhizal fungi and nitrogen addition on grassland temporal stability in the eastern Eurasian desert steppe

Yang

Liang

et al. 2023

Ecology and Evolution

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“…In this study, the positive association of CWM_LN, CWM_SLA, and CWM_H max , and the negative association of CWM_LTD and CWM_LDMC with community AGB implies acquisitive and conservative strategies across the studied species within communities. Studies have shown that the competition of plants for nutrient and light increased following fertilization [ 25 , 35 ]. The dominant species could maintain high grassland aboveground biomass through the traits related to competition ability.…”

Section: Discussionmentioning

confidence: 99%

“…In each block, four N levels (0, 25, 50, and 100 kg N ha −1 yr −1 ) were randomly assigned to four main-plots and four levels of P addition rate (0, 20, 40, and 80 kg P 2 O 5 ha −1 yr −1 ) were randomly assigned to four subplots. For more experimental details, see [ 35 ]. We used one 1 × 1 m quadrat for the community survey and one 1 × 1 m quadrat for functional trait measurement in each subplot.…”

Section: Methodsmentioning

confidence: 99%

Using Trait-Based Methods to Study the Response of Grassland to Fertilization in the Grassland in Semiarid Areas in the Loess Plateau of China

Yang

Chen

et al. 2022

Plants

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Grassland is the dominant vegetation type in the Loess Plateau, and grassland productivity and processes are limited by nitrogen (N) and phosphorus (P). Studies have shown that productivity would change following fertilization in the grassland. The response of productivity to fertilization mainly depends on the dominant species traits. Trait-based methods provide a useful tool for explaining the variations in grassland productivity following fertilization. However, the relative contribution of plant functional traits to grassland productivity under N and P addition in the Loess Plateau is not clear. We measured aboveground biomass (AGB) and leaf N content (LN), leaf P content (LP), leaf N/P ratio (LN/P), specific leaf area (SLA), leaf tissue density (LTD), leaf dry matter content (LDMC), and maximum plant height (Hmax) to study how these plant functional traits regulate the relative biomass of different species and grassland productivity following fertilization. Our results showed, that under different nutrient addition levels, the linkages between plant functional traits and the relative biomass of different species were different. Community AGB was positively related to community−weighted mean LN (CWM_LN), CWM_LN/P, CWM_SLA, and CWM_Hmax, but negatively related to CWM_LTD and CWM_LDMC. Dominant species traits largely determined grassland productivity, in line with the mass ratio hypothesis. These findings further highlight the close linkages between community-level functional traits and grassland productivity. Our study contributes to the mechanisms underlying biodiversity–ecosystem function relationships and has significance for guiding semiarid grassland management.

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Short‐term grazing reduced community stability by decreasing community‐wide asynchrony and dominant species stability

Hao,

Diao,

et al. 2024

Ecosphere

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The effects of grazing on natural grasslands' plant composition, diversity, and productivity depend on the intensity of grazing. Besides grazing intensity, animal composition is also important. However, whether and how sheep grazing intensity affects the temporal biomass stability of plant communities is unclear. Here, we conducted a 5‐year grazing experiment to evaluate the effects of four grazing intensities on community biomass stability and the underlying mechanisms. Our results showed that the higher grazing intensity significantly decreased community biomass stability, community‐wide asynchrony, functional groups asynchrony, dominant species stability, and species dominance, but did not affect species richness. The results of structural equation modeling revealed that grazing decreased community biomass stability by decreasing dominant species stability and community‐wide asynchrony, which was attributable to the reduction in plant functional group asynchrony. Our results highlight the importance of functional group composition and dynamics in predicting the changes in community function in sheep grazing grassland ecosystems. Under continuous seasonal grazing conditions, the sustainable function and human services of grasslands in the agropastoral ecotone might decrease in the future.

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Effects of plant diversity on semiarid grassland stability depends on functional group composition and dynamics under N and P addition

Cited by 15 publications

References 47 publications

Negative effects of phosphorus addition outweigh effects of arbuscular mycorrhizal fungi and nitrogen addition on grassland temporal stability in the eastern Eurasian desert steppe

Negative effects of phosphorus addition outweigh effects of arbuscular mycorrhizal fungi and nitrogen addition on grassland temporal stability in the eastern Eurasian desert steppe

Using Trait-Based Methods to Study the Response of Grassland to Fertilization in the Grassland in Semiarid Areas in the Loess Plateau of China

Short‐term grazing reduced community stability by decreasing community‐wide asynchrony and dominant species stability

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