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Of all Roosevelt’s achievements, he was proudest of his work in conservation of natural resources and extending federal protection to land and wildlife. Roosevelt worked closely with Interior Secretary James Rudolph Garfield and Chief of the United States Forest Service Gifford Pinchot to enact a series of conservation programs that often met with resistance from Western members of Congress, such as Charles William Fulton. Nonetheless, Roosevelt established the United States Forest Service, signed into law the creation of five National Parks, and signed the 1906 Antiquities Act, under which he proclaimed 18 new U.S. National Monuments. He also established the first 51 bird reserves, four game preserves, and 150 National Forests. The area of the United States that he placed under public protection totals approximately 230,000,000 acres (930,000 km2).
Roosevelt extensively used executive orders on a number of occasions to protect forest and wildlife lands during his tenure as President. By the end of his second term in office, Roosevelt used executive orders to establish 150 million acres of reserved forestry land. Roosevelt was unapologetic about his extensive use of executive orders to protect the environment, despite the perception in Congress that he was encroaching on too many lands. Eventually, Senator Charles Fulton (R-OR) attached an amendment to an agricultural appropriations bill that effectively prevented the president from reserving any further land. Before signing that bill into law, Roosevelt used executive orders to establish an additional 21 forest reserves, waiting until the last minute to sign the bill into law. In total, Roosevelt used executive orders to establish 121 forest reserves in 31 states. Prior to Roosevelt, only one president had issued over 200 executive orders, Grover Cleveland. The first 25 presidents issued a total of 1,262 executive orders; Roosevelt issued 1,081.