The value of wetlands: importance of scale and landscape setting
The value of wetlands: importance of scale and landscape setting
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DOI：
10.1016/s0921-8009(00)00165-8
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发表时间：
2000-10-01
影响因子：
7
通讯作者：
Gosselink, JG
中科院分区：
文献类型：
--
作者：
Mitsch, WJ;Gosselink, JG
湿地具有价值，因为它们的功能已被证明对人类有用。一些湿地的单位价值也随着人类的发展（农业和城市）而增加，因为使用的增加和/或稀缺性的增加。然而，自相矛盾的是，在人类发展繁重的领域，其功能很容易被淹没，从而削弱了这些价值。因此，湿地在景观中作为空间分布系统发挥了最大作用。此外，价值部分取决于它们在景观中的位置，例如，湿地与其他系统（包括城市和农业景观）的水文和生物通量的开放程度。给湿地和其他生态系统赋值的一个悖论是，如果不采取景观观点，就可以主张用另一个系统取代一个系统。各种功能，如水质或防洪景观的百分比估计。有人建议，温带流域的3-7%的范围内应该在湿地提供足够的防洪和水质值的景观。(C)2000 Elsevier Science B. V.保留所有权利。
Wetlands have value because their functions have proved to be useful to humans. The unit value for some wetlands also increases with human development (agriculture and urban) because of increased use and/or increased scarcity. Yet, paradoxically, its functions can easily be overwhelmed in areas of heavy human development, thus lessening those values. Thus wetlands appear to work best in the landscape as spatially distributed systems. Also, the value is partially dependent on where they are found in the landscape, e.g., the degree to which a wetland is open to hydrologic and biological fluxes with other systems, including urban and agricultural landscapes. A paradox of assigning values to wetlands and other ecosystems is that it can argue for the replacement of one system with another if a landscape view is not taken. Estimates of percent of landscape for various functions, e.g. water quality or flood control, are presented. It is suggested that a range of 3-7% of temperate-zone watersheds should be in wetlands to provide adequate flood control and water quality values for the landscape. (C) 2000 Elsevier Science B.V. All rights reserved.