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In Pennsylvania, the valley is known by three names: (listed from north to south) the Lehigh Valley, the Lebanon Valley, and the Cumberland Valley. Rocks that characterize this region include: limestone, dolomite, slate , shale, sandstone, siltstone, and some scattered basalt.
This page alphabetically lists some known plant species occurring in the US state of Pennsylvania. Currently about 2,100 native and 1,300 non-native plant species are known in Pennsylvania. [1] According Pennsylvania Department of Conservation and Natural Resources, the known species make up 37% of Pennsylvania's total wild plant flora.
Pages in category "Valleys of Pennsylvania" The following 23 pages are in this category, out of 23 total. This list may not reflect recent changes. B.
Treeline visible in lower left, northern Quebec, Canada, while trees also grow in the sheltered river valleys. The Arctic tree line is the northernmost latitude in the Northern Hemisphere where trees can grow; farther north, it is too cold all year round to sustain trees. [23]
Because of such heavy logging and mining, wildfires, floods and erosion were a threat. With care and a general absence of overt human interference and manipulation, the forests grew. Since they started growing at roughly the same time, most of the trees in today's second-growth forest on the Allegheny Plateau are the same age (70–100 years old).
The area contains a bog surrounded by steep mountains, in an enclosed valley that has been poorly drained for thousands of years. The bog creates a swampy landscape that is unusual for central Pennsylvania, and it is known for providing a habitat for rare plants and insects. [4] Large amounts of peat have formed at the bottom of the bog. This ...
They are managed by the Pennsylvania Bureau of Forestry, a division of the Pennsylvania Department of Conservation and Natural Resources. A reorganization effective July 1, 2005 shifted territory among several state forests in eastern Pennsylvania, resulting in the elimination of Wyoming State Forest and the creation of Loyalsock State Forest.
Penns Valley is an eroded anticlinal valley of the Pennsylvania ridge and valley geologic region of the Appalachian Mountain range. The valley is located in southern Centre County, Pennsylvania . Along with the Nittany Valley to the north and east, it is part of the larger Nittany Anticlinorium. [ 1 ]