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Biodiversity conservation is a focus of attention in today's society, and one of the important reasons is to protect its ecosystem functions and then exert its service capacity
.
The positive relationship between biodiversity and ecosystem function (BEF) has been widely verified under simple experimental conditions of manipulation, but in complex natural conditions, the relationship between the two is not clear, which may be related to
the study scale and selected ecosystem function indicators.
Submerged plants are an important ecological foundation of lakes, rivers and other water bodies, and provide an important guarantee for
the maintenance of their ecosystem functions and services.
Over the years, China's eutrophication governance capacity has been greatly improved, but the problem of eutrophication is still an unsolved problem
.
Under natural conditions, eutrophication is still an important cause of the decline of submerged vegetation, and the restoration of submerged vegetation has been an important technical method
for lake water ecological restoration in recent years.
Therefore, taking submerged plants as the main research body to explore the relationship between submerged plant biodiversity and ecosystem functions under eutrophication pressure, it can provide theoretical guidance
for eutrophication control.
Based on the Dali Erhai Sea, the research team of Cao Te, Institute of Hydrobiology, Chinese Academy of Sciences, through extensive investigation of submerged vegetation in lakes, reservoirs and other natural water bodies in Yunnan, combined with multi-angle diversity indices (species diversity, functional diversity (FD) and β diversity) revealed that submerged plant biodiversity can buffer the pressure of eutrophication on ecosystem functions.
At the same time, functional diversity is the strongest evidence
for predicting ecosystem functioning.
With the intensification of eutrophication, plant communities can ensure the corresponding ecosystem functions
by increasing the "selection effect" and reducing the "niche complementarity effect" or changing the functional composition of the community.
Common submerged plant species
