With New York's population expected to grow by one million in two decades, Mayor Michael R. Bloomberg will call on Sunday for a raft of ambitious and sometimes contentious proposals that are intended to ease traffic congestion, reduce air pollution, build housing, improve mass transit and develop abandoned industrial land.

The speech, which mayoral aides have described as the centerpiece of his final 32 months in office, will outline his vision for the city over the next quarter century, setting priorities for refurbishing the city's aging bridges, water mains, transit system, power plants and building codes. And in the talk on Sunday - Earth Day - the mayor will propose doing so in a way that reduces the strain on natural resources like water, clean air and land.

Toward that end, Mr. Bloomberg is expected to advocate more than 100 proposals, including charging drivers to enter the busiest sections of Manhattan, and using zoning and tax incentives to encourage the construction of 250,000 homes.