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Xi’an University of Technology (2021)

Research on the Impact of Large-scale Desert Photovoltaic Development on Local Microclimate,Soil and Vegetation

秦一凡

Titre : Research on the Impact of Large-scale Desert Photovoltaic Development on Local Microclimate,Soil and Vegetation

Auteur : 秦一凡

Grade : Master These 2021

Université : Xi’an University of Technology

Résumé partiel
At present,the energy structure of the world is changing drastically,Traditional fossil energy has serious pollution,limited reserves,and lack of sustainability.Therefore,the use of clean energy represented by photovoltaics has become a hot spot of public concern.The development of solar photovoltaic power generation is change daily.When it comes to growth and construction,environmental issues are getting the attention of many.In this paper,the Qinghai Gonghe photovoltaic power station is used as the research area,using the field ecological environment element monitoring station chief sequence data to analyze the change characteristics of the local microclimate and soil environment inside and o utside of the photovoltaic system,determine the effects of the construction of-the photovoltaic system on environmental factors ;use supervision classification and Quantitative remote sensing inversion algorithm analyzes the temporal and spatial heterogeneity characteristics of vegetation coverage before and after station construction,comprehensively evaluates the vegetation restoration effect of photovoltaic power station construction,and provides a reference for the rational development of solar energy and the construction of photovoltaic power stations.The important conclusions of this article are as follows :(1)Using the observation data of the three field ecological environment element monitoring stations from 2019 to 2020,comparative analysis of the change characteristics of the climate environment inside and outside the Gonghe photovoltaic power station,preliminary reveals the local microclimate effect of photovoltaic development,the results show that :①The photovoltaic power station has a certain degree of "photovoltaic heat island effect" in the spring and summer during the day."It has a "self-cooling mechanism" in the autumn and winter during the day and the four seasons at night.The cooling effect at night is more obvious,so it appears that photovoltaic power plants can reduce the average daily temperature and increase the daily temperature difference.②Photovoltaic power plants have a dehumidification effect in the spring and summer during the day,and they have a humidification effect during the day in autumn and winter and at night in all seasons.The effect of humidification at night is more obvious,so it appears that photovoltaic power plants can increase air humidity(except for the dehumidification effect in the transitional area in summer),and increasing air humidity is worse every day.③The photovoltaic power station has the effect of blocking wind and sand.

Mots clés : Photovoltaic development ; local environment ; ecological environment effect ; vegetation restoration effect ;

Présentation (CNKI)

Page publiée le 25 octobre 2021