Abstract
Relationship between plant community functional diversity and ecosystem multifunctionality (EMF) was a new area of ecological research in recent years. Previous studies had mostly focused on the relationship between plant community functional diversity and individual ecosystem function, and lack of understanding of the EMF. In this study, six functional indices of aboveground biomass, soil organic carbon, soil total nitrogen, soil total phosphorus, soil available nitrogen and soil available phosphorus of Gannan alpine meadow were selected to analyze the relationship between plant community functional diversity and EMF on the altitude gradient of Gannan alpine mea-dow by using Bartlett sphericity test and multi-threshold method. The results showed that there was significant altitudinal difference in plant community composition, with species richness and plant coverage at 3500 m were significantly higher than those at other altitudes. Single and multi-functional diversity decreased with the increases of altitude, with significant difference among altitudes. Redundancy analysis showed that single and multi-functional richness, functional evenness and Rao's quadratic entropy were significantly positively correlated with soil temperature, soil water content and soil bulk density, and significantly negatively correlated with soil pH and soil conductivity. In a large threshold range (6%-89%), functional diversity had a significant positive effect on EMF. Based on correlation analysis, optimal regression model and random forest model, it was found that multi-functional richness index had a significant positive relationship with EMF, and that multi-functional richness was also the main driving factor of EMF. Overall, functional richness had the most significant impact on the EMF of alpine meadow in the Qinghai-Tibet Plateau.
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Claims 8
Claim · model-written summary
Species richness and plant coverage at 3500 m were significantly higher than at other altitudes in the Gannan alpine meadow.
Verbatim
t0“alpine meadow along an altitude gradient in Gannan, China”
e1“species richness and plant coverage at 3500 m were significantly higher than those at other altitudes”
Claim · model-written summary
Single and multi-functional diversity decreased with increasing altitude, with significant differences among altitudes.
Verbatim
t0“alpine meadow along an altitude gradient in Gannan, China”
e2“Single and multi-functional diversity decreased with the increases of altitude, with significant difference among altitudes”
Claim · model-written summary
Single and multi-functional richness, functional evenness and Rao's quadratic entropy were significantly positively correlated with soil temperature, soil water content and soil bulk density.
Verbatim
t0“alpine meadow along an altitude gradient in Gannan, China”
e3“Redundancy analysis showed that single and multi-functional richness, functional evenness and Rao's quadratic entropy were significantly positively correlated with soil temperature, soil water content and soil bulk density, and significantly negatively correlated with soil pH and soil conductivity”
Claim · model-written summary
Single and multi-functional richness, functional evenness and Rao's quadratic entropy were significantly negatively correlated with soil pH and soil conductivity.
Verbatim
t0“alpine meadow along an altitude gradient in Gannan, China”
e3“Redundancy analysis showed that single and multi-functional richness, functional evenness and Rao's quadratic entropy were significantly positively correlated with soil temperature, soil water content and soil bulk density, and significantly negatively correlated with soil pH and soil conductivity”
Claim · model-written summary
Functional diversity was significantly positively related to ecosystem multifunctionality within a large threshold range (6%-89%).
Verbatim
t0“alpine meadow along an altitude gradient in Gannan, China”
e4“In a large threshold range (6%-89%), functional diversity had a significant positive effect on EMF”
Claim · model-written summary
Multi-functional richness index was significantly positively related to ecosystem multifunctionality.
Verbatim
t0“alpine meadow along an altitude gradient in Gannan, China”
e5“multi-functional richness index had a significant positive relationship with EMF”
Claim · model-written summary
Multi-functional richness was the main driving factor of ecosystem multifunctionality.
Not reportedDirection
Verbatim
t0“alpine meadow along an altitude gradient in Gannan, China”
e6“multi-functional richness was also the main driving factor of EMF”
Claim · model-written summary
Functional richness had the most significant impact on ecosystem multifunctionality of alpine meadow in the Qinghai-Tibet Plateau.
Verbatim
t0“alpine meadow along an altitude gradient in Gannan, China”
e7“functional richness had the most significant impact on the EMF of alpine meadow in the Qinghai-Tibet Plateau”