Bureau of Land Management in the context of "Land cover"

Vegetation is an assemblage of plants and the ground cover they provide. It is a general term, without specific reference to particular taxa, life forms, structure, spatial extent, or any other specific botanical or geographic characteristics. It is broader than the term flora which refers to species composition. Perhaps the closest synonym is plant community, but "vegetation" can, and often does, refer to a wider range of spatial scales than that term does, including scales as large as the global. Primeval redwood forests, coastal mangrove stands, sphagnum bogs, desert soil crusts, roadside weed patches, wheat fields, cultivated gardens and lawns; all are encompassed by the term "vegetation".

The vegetation type is defined by characteristic dominant species, or a common aspect of the assemblage, such as an elevation range or environmental commonality. The contemporary use of "vegetation" approximates that of ecologist Frederic Clements' term earth cover, an expression still used by the Bureau of Land Management.

A ranch (from Spanish: rancho/Mexican Spanish) is an area of land, including various structures, given primarily to ranching, the practice of raising grazing livestock such as cattle and sheep. It is a subtype of farm. These terms are most often applied to livestock-raising operations in Mexico, the Western United States and Western Canada, though there are ranches in other areas. People who own or operate a ranch are called ranchers, cattlemen, or stockgrowers. Ranching is also a method used to raise less common livestock such as horses, elk, American bison, ostrich, emu, and alpaca.

Ranches generally consist of large areas, but may be of nearly any size. In the western United States, many ranches are a combination of privately owned land supplemented by grazing leases on land under the control of the federal Bureau of Land Management or the United States Forest Service. If the ranch includes arable or irrigated land, the ranch may also engage in a limited amount of farming, raising crops for feeding the animals, such as hay and feed grains.

In the United States, a national monument is a protected area that can be created from any land owned or controlled by the federal government by proclamation of the president of the United States or an act of Congress. National monuments protect a wide variety of natural and historic resources, including sites of geologic, marine, archaeological, and cultural importance. The Antiquities Act of 1906 gives presidents the power to proclaim national monuments by executive action. In contrast, national parks in the U.S. must be created by Congressional legislation. Some national monuments were first created by presidential action and later designated as national parks by congressional approval.

The 138 national monuments are managed by several federal agencies: the National Park Service, United States Forest Service, United States Fish and Wildlife Service, the Bureau of Land Management, and the National Oceanic and Atmospheric Administration (in the case of marine national monuments). Historically, some national monuments were managed by the War Department.

The National Wilderness Preservation System (NWPS) of the United States protects federally managed wilderness areas designated for preservation in their natural condition. Activity on formally designated wilderness areas is coordinated by the National Wilderness Preservation System. Wilderness areas are managed by four federal land management agencies: the National Park Service, the U.S. Forest Service, the U.S. Fish and Wildlife Service, and the Bureau of Land Management.

The term wilderness is defined as "an area where the earth and community of life are untrammeled by man, where man himself is a visitor who does not remain" and "an area of undeveloped Federal land retaining its primeval character and influence, without permanent improvements or human habitation, which is protected and managed so as to preserve its natural conditions".

The Alaska National Interest Lands Conservation Act (ANILCA) is a United States federal law signed by President Jimmy Carter on December 2, 1980. ANILCA provided varying degrees of special protection to over 157 million acres (640,000 km) of land, including national parks, national wildlife refuges, national monuments, wild and scenic rivers, recreational areas, national forests, and conservation areas. It was, and remains to date, the single largest expansion of protected lands in history and more than doubled the size of the National Park System.

The Act provided for 43.585 million acres (176,380 km) of new national parklands in Alaska; the addition of 9.8 million acres (40,000 km) to the National Wildlife Refuge System; twenty-five wild and scenic rivers, with twelve more to be studied for that designation; establishment of Misty Fjords and Admiralty Island National Monuments in Southeast Alaska; establishment of Steese National Conservation Area and White Mountains National Recreation Area to be managed by the Bureau of Land Management; the addition of 9.1 million acres (37,000 km) to the Wilderness Preservation System, and the addition of 3.35 million acres (13,600 km) to Tongass and Chugach National Forests.

Land cover is the physical material at the land surface of Earth. Land covers include flora, concrete, built structures, bare ground, and temporary water. Earth cover is the expression used by ecologist Frederick Edward Clements that has as its closest modern equivalent vegetation. The expression continues to be used by the United States Bureau of Land Management.

There are two primary methods for capturing information on land cover: field survey, and analysis of remotely sensed imagery. Land change models can be built from these types of data to assess changes in land cover over time.

The Spring Mountains are a mountain range of Southern Nevada in the United States, running generally northwest–southeast along the west side of Las Vegas and south to the border with California. Most land in the mountains is owned by the United States Forest Service and the Bureau of Land Management and managed as the Spring Mountains National Recreation Area within the Humboldt-Toiyabe National Forest and the Red Rock Canyon National Conservation Area.

The Black Rock Desert–High Rock Canyon Emigrant Trails National Conservation Area is the federal land in northwestern Nevada, under the Bureau of Land Management-BLM management and protection, and the ten Wilderness Areas within it.

The long name has led people to often shorten it to the Black Rock–High Rock NCA, when not needing the official name. The protected areas were created by the Black Rock Desert–High Rock Canyon Emigrant Trails National Conservation Area Act of 2000.