Tricky slope if not regulated well, like in India every farmer in the North does this and they up creating a gas chamber for a few months. Regulation of it has become highly political because that's the majority of voters. So now we just live with extremely bad pollution as part of life.
Wisconsin does this to preserve native ecosystems! I believe this particular land is maintained by the County.
Prescribed fire is the intentional application of fire to a specific pre-planned area, under specific environmental conditions, to accomplish planned land management objectives. Without the use of prescribed burning as a management tool, Wisconsin could lose many of its native grassland, wetland and savanna plant communities.