This is the place or land where people live and carry out their day-to-day activities. The state of the land is a reflection of the state of life of the people living on it. As Nichiren Daishonin points out:
If the minds of living beings are impure, their land is also impure, but if their minds are pure, so is their land. There are not two lands, pure or impure in themselves. The difference lies solely in the good or evil of our minds.