And finally, the sixth-class risk zone mainly locates the construction land (towns, inhabitation spots, etc.), unused land and some water areas.

• 一级风险区，平川地区一是加强生态环境建设，增加林草植被覆盖率，应当适度扩大旱地经济林的种植面积、进一步提高雨水资源就地利用率和经济效益；