上风向 meaning in English

upper drift
upwind direction

The main principles on city gardening of sand areas are as follows : the biggest angle between high streets and principal windy direction should be kept , gardens and park should be set up windward , open parks and facilities for water saving should be built on the main streets
沙区城市园林绿化应遵循的主要原则是，主要街道与主害风向要有最大的夹角，林园、植物园、公园设置在上风向，主要街道上设置开放式街道公园和节水设计。