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According to the California Protected Areas Database (CPAD), in the state of California, United States, there are over 14,000 inventoried protected areas administered by public agencies and non-profits. In addition, there are private conservation areas and other easements.〔(California Protected Areas Database )〕 They include almost one-third of California's scenic coastline, including coastal wetlands, estuaries, beaches, and dune systems. The California State Parks system alone has 270 units and covers 1.3 million acres (5,300 km2), with over 280 miles (450 km) of coastline, 625 miles (1,006 km) of lake and river frontage, nearly 18,000 campsites, and 3,000 miles (5,000 km) of hiking, biking, and equestrian trails. Obtaining an accurate total of all protected land in California and elsewhere is a complex task. Many parcels have inholdings, private lands within the protected areas, which may or may not be accounted for when calculating total area. Also, occasionally one parcel of land is included in two or more inventories. Over 90% of Yosemite National Park for example, is listed both as wilderness by the National Wilderness Preservation System, and as national park land by the National Park Service. The Cosumnes River Preserve is an extreme example, owned and managed by a handful of public agencies and private landowners, including the Bureau of Land Management, the County of Sacramento and The Nature Conservancy. Despite the difficulties, the CPAD gives the total area of protected land at , or 46.7% of the state (not including easements); a considerable amount for the most populous state in the country. ==National Park System== The U.S. National Park System controls a large and diverse group of California parks, monuments, recreation areas and other units which in total exceed .〔(【引用サイトリンク】 NPS Public Use Statistics Office: Acreage Reports )〕 The best known is Yosemite National Park, noted for several iconic natural features including Yosemite Falls, El Capitan and Half Dome, which is displayed on the reverse side of the . Other prominent parks are the Kings Canyon-Sequoia National Park complex, Redwood National Park, Channel Islands National Park, Joshua Tree National Park and the largest, Death Valley National Park. The NPS also administers the Manzanar National Historic Site in Inyo County. {| width=100% border=0 |- valign="top" | width=30% | 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「California protected areas」の詳細全文を読む スポンサード リンク
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