WASHINGTON — Interior Secretary Ken Salazar, who oversaw a moratorium on offshore drilling after the BP oil spill, will leave the Obama administration in March, Obama administration officials said today.

Salazar has run the Interior Department throughout President Barack Obama’s first term.

A former senator from Colorado, Salazar pushed renewable power such as solar and wind, but gained the most attention for his role in the drilling moratorium, a key part of the administration’s response to the April 2010 explosion of the Deepwater Horizon rig in the Gulf of Mexico.

It was one of the largest environmental disasters in U.S. history and led to the unprecedented shutdown of offshore drilling.

Salazar is the latest Cabinet secretary to leave the administration as Obama heads into his second term. Secretary of State Hillary Rodham Clinton, Pentagon chief Leon Panetta, Treasury Secretary Timothy Geithner and Labor Secretary Hilda Solis are also leaving.