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The Coastal Barrier Resources Act (CBRA, Public Law 97-348) of the United States was enacted October 18, 1982. The United States Congress passed this Act in order to address the many problems associated with coastal barrier development. CBRA designated various undeveloped coastal barriers, which were illustrated by a set of maps adopted by law, to be included in the John H. Chafee Coastal Barrier Resources System (CBRS). These designated areas were made ineligible for both direct and indirect federal expenditures and financial assistance, which are believed to encourage development of fragile, high-risk, and ecologically sensitive coastal barriers. CBRA was originally authored by U.S. Representative Thomas B. Evans, Jr. and Senator John Chafee, who kept three objectives in mind: 1) to minimize the loss of human life by discouraging development in high risk areas vulnerable to storm surges and hurricane winds; 2) to reduce wasteful expenditure of federal resources; and 3) to protect the natural resources associated with undeveloped coastal barriers. == Undeveloped coastal barriers == Coastal barriers are landscape features that protect the mainland, lagoons, wetlands and salt marshes from the full force of wind, wave and tidal energy. “Undeveloped coastal barriers” are defined by the CBRA to include barrier islands, bars, spits, and tombolos, along with associated aquatic habitats, such as adjacent estuaries and wetlands. Composed of sand and other loose sediments, these elongated, narrow landforms are dynamic ecosystems and are vulnerable to hurricane damage and shoreline recession. Coastal barriers also provide important habitat for a variety of wildlife, and are an important recreational resource. The Coastal Barrier Resources Reauthorization Act of 2000 (Public Law 106-514) provided specifications for determining if an area was undeveloped at the time it was included within the CBRS, and ordered the development of a Digital Mapping Pilot Project for between 50 and 75 CBRS areas for the purpose of information precision and accessibility. If some portion of a barrier landform is developed, the remaining undeveloped portion may be included in the CBRS. == U.S. Fish and Wildlife Service Role == The United States Department of the Interior, through the United States Fish and Wildlife Service (Service), was named the primary authority in the implementation of this Act, and may approve the use of subsidies for such uses as emergency assistance, national security, navigability, fish and wildlife research, and energy exploration. Other Service responsibilities for administrating the CBRA include: • 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「Coastal Barrier Resources Act」の詳細全文を読む スポンサード リンク
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