Effects of Different Measures on the Wind and Sand Environment and Soil of Photovoltaic Power Stations
In order to study the effects of different measures on the wind and sand environment and soil of photovol-taic power stations,an experimental study of photovoltaic sand control was carried out in the 100 MW photovoltaic project area of Ulanbuh Desert,and the indicators of wind and sand,meteorology,soil and vegetation were com-paratively analyzed with the flowing sand outside the power station as the control.The results show that the photo-voltaic arrays themselves could play a significant role in sand stabilization,and the sand transport between and un-der the panels without sand barriers and vegetation was reduced by 54.12%and 74.63%,respectively,compared with the control.After the installation of sand barriers,the sediment transport between and under the boards de-creased by 98.59%and 97.88%respectively compared to the control,and the sand barrier significantly weakened the"venturi effect".After vegetation restoration,the number of microorganisms in the soil increased and the compo-sition of particle size improved,which played a key role in soil improvement and biodiversity recovery.Under the combined influence of the three measures,the average sand transport in the station was reduced by 98.98%com-pared with that outside the station,the average monthly wind speed was reduced by 2.30 m.s-1,the average monthly air temperature was reduced by 2.05℃,and the average monthly air relative humidity was increased by 3.94%,which showed the significant features of windproof and sand fixation and cooling and humidification,and realized a better ecological management effect.
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