Urban planning and garden departments should try to reduce impervious ground and expand green space and water area. We should adjust the energy structure, reduce the consumption of coal and fuel oil, and develop and utilize clean and renewable energy such as solar energy, wind energy and water energy. Light colored materials should be used as far as possible for the exterior of urban buildings, and materials with small heat absorption or honeycomb structure should be used for roads to effectively change the heat balance of the ground surface. The surface temperature can be reduced by evaporation of ground water.<br>Demolishing the high courtyard walls of some units to form fences to increase air circulation, changing the direction of new buildings parallel to the prevailing wind direction to improve ventilation conditions are simple and effective means to reduce the heat island effect. The streets in coastal cities are perpendicular to the coastline, making full use of the sea breeze.<br>
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