My English isn’t Englishing atm, bear with me. Heat island effect is caused (amongst other things) due to sealed ground. So replacing asfalt roads, and even brick sealings with green space or even better water, should help regulate temperature. On top of this, instead of white roofs, green roofs are also a good option
Walking into tulip fields and (accidentally) trampling them, even when there are signs, ropes and people telling you to stay out