Department of Crop and Soil Environmental Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA.
Environ Manage. 2011 May;47(5):751-65. doi: 10.1007/s00267-011-9670-z. Epub 2011 Apr 11.
Surface coal mining in Appalachia has caused extensive replacement of forest with non-forested land cover, much of which is unmanaged and unproductive. Although forested ecosystems are valued by society for both marketable products and ecosystem services, forests have not been restored on most Appalachian mined lands because traditional reclamation practices, encouraged by regulatory policies, created conditions poorly suited for reforestation. Reclamation scientists have studied productive forests growing on older mine sites, established forest vegetation experimentally on recent mines, and identified mine reclamation practices that encourage forest vegetation re-establishment. Based on these findings, they developed a Forestry Reclamation Approach (FRA) that can be employed by coal mining firms to restore forest vegetation. Scientists and mine regulators, working collaboratively, have communicated the FRA to the coal industry and to regulatory enforcement personnel. Today, the FRA is used routinely by many coal mining firms, and thousands of mined hectares have been reclaimed to restore productive mine soils and planted with native forest trees. Reclamation of coal mines using the FRA is expected to restore these lands' capabilities to provide forest-based ecosystem services, such as wood production, atmospheric carbon sequestration, wildlife habitat, watershed protection, and water quality protection to a greater extent than conventional reclamation practices.
阿巴拉契亚地区的露天采煤已经导致大面积的森林被非林地覆盖,其中大部分土地没有得到管理,也没有生产力。虽然森林生态系统因其有市场价值的产品和生态系统服务而受到社会的重视,但由于传统的复垦实践受到监管政策的鼓励,而这些实践创造了不利于重新造林的条件,因此阿巴拉契亚地区的大部分矿区都没有恢复森林。复垦科学家研究了在较老矿场上生长的多产森林,在最近的矿场上进行了森林植被的实验性种植,并确定了鼓励森林植被重建的矿区复垦实践。在此基础上,他们开发了一种林业复垦方法(FRA),可以由煤炭开采公司用来恢复森林植被。科学家和矿区监管机构合作,向煤炭行业和监管执法人员宣传了 FRA。如今,许多煤炭开采公司都在常规使用 FRA,已经有数千公顷的矿区得到了复垦,以恢复生产性矿土,并种植了本地的森林树木。采用 FRA 复垦煤矿预计将在更大程度上恢复这些土地提供基于森林的生态系统服务的能力,例如木材生产、大气碳固存、野生动物栖息地、流域保护和水质保护。