Study On Soil Nutrient And Vegetation Change In Wind Farms

Nowadays,wind power generation,a new energy project,has been attached great importance to all over the world because of its good economic benefits and social prospects.However,wind farm will cause disturbance of atmospheric circulation in the process of construction,change local microclimate,have direct and indirect effect on ecological environment of underlying surface,and soil and vegetation are important components of ecological environment.The change of soil properties and the serious destruction of vegetation are due to the ecological restoration of wind farms which restricts the rapid development of wind farms.Therefore,the effects of wind farms on soil properties and vegetation characteristics in different operating periods should be paid more attention to.Therefore,the impact of wind farms on soil properties and vegetation characteristics should be paid attention to during operation.In view of this,this paper takes the wind farms during the operation period as the research object,and through the combination of field surveys and indoor laboratory analysis,The characteristics of soil nutrients and vegetation changes under the influence of wind farms Were analyzed by comparison and analysis of soil nutrients and vegetation characteristics in the control samples of wind farms in the operation period,the main results are as follows:(1)The average contents of soil organic matter,total nitrogen,available phosphorus,available potassium in the same land were higher than those in the experimental plots under the influence of wind farm,and the soil organic matter and total nitrogen around the wind farm for one year.The average content of available phosphorus and available potassium was low,and the average content of available phosphorus and available potassium increased gradually with the increase of operation time.(2)The average content of soil organic matter,total nitrogen,available phosphorus and available potassium in the wind farm test plots of different operating periods decreased significantly with the increase of soil depth;soil organic matter,total nitrogen,and available phosphorus under the influence of wind farms during the same operation period.The average content of available potassium was highest at 10 cm,gradually decreased toward the deep layer,and dropped to the lowest at 40 cm.and the soil pH varied between7.0 and 8.3,and the soil showed weak alkalinity.(3)The average contents of organic matter,total nitrogen,available phosphorus and available potassium in wind farm soil increased with the increase of radiation radius.Theaverage content of soil organic matter,total nitrogen and available phosphorus in the wind farm at the same radiation radius of the same operating period increases with the extension of the operating time,and the soil organic matter,total nitrogen and available phosphorus are located 50 m away from the center of the wind turbine.The average content of available potassium was higher than 10 m radiation radius,the soil pH had no obvious change,and the soil was weakly alkaline.(4)There is a linear correlation between vegetation biomass and radiation radius in different operating periods of wind farm.The vegetation biomass at 10 m radiation radius and 50 m radiation radius increases linearly with the development of operation time.The linear correlation coefficient of the wind farm is 0.9545,0.9993,the linear correlation is significant,the vegetation coverage of wind farm in the same operating period is higher than that at the radiation radius of 50 m,and the vegetation coverage around the wind farm in different operation period is obviously different.The vegetation coverage of wind farm for one year is only 7.35,and the vegetation coverage for nine years is 82.34.There was significant positive correlation between vegetation coverage and the interval between different operating periods of wind farm(the significant level was 0.05,the correlation coefficient was 0.988;the vegetation coverage of wind farm increased linearly with the increase of radiation radius in different operating periods).In summary,based on the analysis results of changes in the average content of soil organic matter,total nitrogen,available phosphorus,and available potassium in wind farms during the operation period,The effects of wind farms on soil nutrients and vegetation changes at different depths and radii radii of different soil layers were analyzed,and their changes were analyzed.The changes of soil nutrients and vegetation during the operation period of the wind farm were discussed,which provided theoretical guidance and scientific basis for the future research on the mechanism of changes in soil nutrients and vegetation,as well as the improvement of soil quality under the wind farm surface and restoration of vegetation.