Advances in research on the effects of photovoltaic power station construction in desert soil environment
It was found that the construction of photovoltaic power stations in desert areas would signifi-cantly reduce the surface soil temperature under the plate by 1.5-4.1 ℃ and increase soil moisture by 3.8％-14.7％.The physical and chemical properties of the soil in the station,such as pH,conductivity,available nitrogen,available phosphorus,available potassium,total nitrogen and total phosphorus,would decrease,increase or remain unchanged compared with the soil outside the station,depending on the location and operation time of the station.After a photovoltaic power station was completed,it would also affect the structure and diversity of soil microbial community through direct and indirect effects,affecting the restoration of soil ecological environment functions.Compared with the soil outside the station,the corrosion resistance of the soil inside it would be enhanced,but it depended on the intersection angle of the photovoltaic array and the wind direction.Although the low temperature conditions created by photovoltaic power stations seemed conducive to inhibiting soil respiration under the plate,the accumula-tion of total carbon in the soil should be regulated by soil temperature and humidity together.It should be noted that the construction of photovoltaic power stations would also bring secondary environmental problems such as salinization,desertification and pollution of desert soil.
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