Comprehensive regionalization study on the difficulty in ecological restoration of wind power plants in Hubei province with full consideration of meteorological effects
WANG Hui, SUN Peng-jie, CHEN Zheng-hong, LI Hui, HE Li-wei
2021, 60(15):
38-43.
doi:10.14088/j.cnki.issn0439-8114.2021.15.007
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The comprehensive zoning of ecological restoration difficulty of wind farms in Hubei province was carried out on the basis of full consideration of meteorological effects, which provided theoretical basis for wind farms in different regions to take different ecological restoration measures. 12 index factors of five categories were selected, including meteorology, soil, vegetation, geographic information and wind energy resources, which affected the ecological restoration of wind farms in Hubei province. The meteorological factor model was established in different regions by using the observation data of 89 national meteorological observation stations and 2 005 automatic observation stations from 2016 to 2018, and the distribution of annual rainfall, summer rainfall, annual mean minimum temperature and other indicators were obtained. A simplified soil rainfall erosivity model was established by using monthly precipitation, and the soil rainfall erosivity index was obtained. The land use type index was obtained by using land cover classification data. The normalized vegetation index （NDVI） was obtained by using satellite remote sensing data. Through the high-resolution （1 km） assessment （30-year average） data set of land wind energy resources, the wind speed at 70 m height and the wind power density at 70 m height were obtained. On this basis, based on the idea that meteorological impact played a dominant role in the ecological restoration process of wind farms, different weight influence coefficients were given to each index factor. Through the weighted comprehensive score method, the comprehensive regionalization grades of wind farm ecological restoration were obtained, which were easy recovered areas, easier recovered areas, difficult recovered areas and more difficult recovered areas. The easy recovered areas were mainly distributed in Jianghan plain, hilly plain in the middle of Xiangyang, Xishui, Qichun and Tuanfeng in east of Hubei province; The easier recovered areas were mainly distributed in the hilly areas of southeast and northwest Hubei; The difficult recovered areas were mainly distributed in the Dabie mountain area in the northeast of Hubei province, the Mufu mountain area in the southeast of Hubei province, the Tongbai mountain area in the north of Hubei province, the Dahong mountain area, and most area of Enshi. The more difficult recovered areas were distributed in some middle and high mountain areas of Hubei province.
