How does the American local government manage the land?

The author in May 2010 to September, the U.S. local governments for land management issues, has on the Massachusetts Cohasset town, Maryland, Howard County, Texas, Houston City, Illinois, Carbondale City and New York Sullivan County conducted a site visit. During the inspection, the author and the local government land planning and management officials to exchange, collect a large number of U.S. local government land management laws and regulations and plans, field trips, a number of planning cases. On the basis of these materials, the author lays out roughly where the U.S. government the basic outline of Land Management.
First need to be clear that the responsibility of the U.S. land management, mainly by local governments. United States operates a private ownership of land. However, in the land planning and management, local governments have often greater than the power of private property rights. This does not mean the local government or the private property rights can be deprived of some local governments like China, as directly to the acquisition of land, but said the United States in the maintenance of local government land's natural attributes, in the protection of the natural environment and historical heritage, through local legislation, to restrict private or company-owned land for its improper development, to prevent the cause of the local natural environment, cultural and historical traditions of the damage.
"Zoning (Zoning)" is developed, including the U.S. local government market economies the basic methods of land management, the local government in land use planning and management practice, through the approval of a piece of land with another piece of land with different purposes and represented by the formation of the map. This method not only can determine the different land uses within a region can regulate land development and construction of the nature and scope. It can be seen, "zoning" land management system is not the nature of the ownership of the land involved, it is mainly regulated land use rights.