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Yosemite National Park
Transcript of Yosemite National Park
*The relative location is East-central California in Yosemite Valley, on the western slope of the Sierra Nevada range. The park is 150 miles east of San Francisco, California, including the towns of Yosemite Village and Wawona. Absolute Location: Relative Location: Some interesting facts about Yosemite National Park: Yosemite National Park lies in the heart of California. With its "hanging" valleys, many waterfalls, cirque lakes, polished domes, moraines and U-shaped valleys. It provides an excellant overview of all kinds of granite relief fashioned by glaciation. At 600-4,000 m, a great variety of flora and fauna can also be found here. History of park: The act of congress of June 30th, 1864, granted Yosemite valley and Mariposa Big tree grove to the state of California (regranted to the US government in 1906). Establishment of Yosemite National Park as a forest reservation on October 1st, 1890. Boundary adjustment were made in 1905. designated as a world Heritage site in 1984. By clearing land for agriculture or logging, large formerly-forested areas of the Middle-East and Europe have been turned into deserts. This also causes major soil erosion which is one of our major ecological problems, worldwide. Problems here in the U. S. caused the Dust Bowl in the 1930s. These problems were subsequently partially overcome by people on small, family farms planting windbreaks, rotating crops, etc. However, the large, post-WWII corporate farms went back to monoculture and tore out the windbreaks that were in the way of big machines, thereby bringing the erosion problems back, even worse than before. I recall reading about an area of, I think it was, Spain that originally had been a lush, forested area, but for much of recent history was a hot, nearly-inhospitable, desert-like area. A local man undertook it as his life’s work to re-plant as many trees as he could, and to encourage others to do the same. Now, a generation or two later, the climate of the area has changed noticably. The presence of trees changed not only the localized microclimate, but influenced the overall climate in the area, including temperature and humidity. HUMAN ENVIRONMENTAL INTERACTIONS: PLACES: The Tioga Road closes due to snow, usually from sometime in November through late May or early June. The road closure extends from the Tuolumne Grove, just east of Crane Flat, to Tioga Pass Entrance Station. (Highway 120, the continuation of the Tioga Road outside the park, is often closed in winter from Tioga Pass to five miles east of Lee Vining.)
When the Tioga Road is closed, it is not possible to drive to Tuolumne Meadows or enter Yosemite National Park from the east. All other park entrances, including those along Highway 120 from the west, Highway 140, and Highway 41, remain open all year.