Characteristics Of Leymus Chinensis Community In Photovoltaic Power Station And Its Influencing Mechanism

This paper takes the Leymus chinensis community of photovoltaic power station in central Inner Mongolia as the research object.In this paper,the distribution and diversity of plants in different locations under photovoltaic panels were determined.The growth status and aboveground biomass of the main plant species Leymus chinensis under the electric board were investigated.The nutrient content and relative feeding value of Leymus chinensis under different positions under photovoltaic panels were studied.On this basis,the long-term determination of Leymus chinensis habitat was carried out.Finally,the mechanism of the influence of photovoltaic panels on Leymus chinensis was clarified by stepwise discriminant regression analysis,path analysis and correlation analysis.In order to provide a theoretical basis for vegetation restoration under the photovoltaic panels of the Leymus chinensis steppe.The results showed:(1)The diversity of plants under the photovoltaic panels is lower than the unmounted control area,ie the placement of photovoltaic panels reduces the diversity of the plant.The most important plant species under photovoltaic panels is Leymus chinensis,which is the main growing plant species.Photovoltaic panels promoted the vegetative growth of Leymus chinensis,The growth index of Leymus chinensis in the area with precipitation supply under PV panels was significantly higher than that of other sites(P<0.05).In July and August,the biomass of Leymus chinensis under PV panels was significantly higher than that of Leymus chinensis outside the PV panels(P<0.05).At the same time,photovoltaic panels have a slight impact on the nutrient content and relative feed value of Leymus chinensis.(2)Photovoltaic panels have a regulatory effect on Leymus chinensis habitats,Effectively reduces the atmospheric temperature under the board,The maximum temperature difference between the inside and outside of the board reaches 10.13?,At the same time,photovoltaic panels increase the near-surface atmospheric humidity and affect the dew point temperature.There is no significant change in soil nutrients under photovoltaic panels.There is a significant difference in soil nutrient content between photovoltaic panels and control areas.Photovoltaic panels affect the water content of each layer of soil by redistributing precipitation.Photovoltaic panels can effectively reduce the amount of soil evaporation under photovoltaic panels.(3)The absolute height,coverage and intemode length of Leymus chinensis are natural traits that directly affect the biomass of Leymus chinensis,Photovoltaic panels affect the vegetative growth of Leymus chinensis by regulating atmospheric humidity and soil moisture conditions.