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首页> 外文会议>AWRA's 2000 Summer Specialty Conference on Riparian Ecology and Management in Multi-Land USE Watersheds Aug 28-31, 2000 Portland, Oregon >CHANGES IN DEVELOPED LAND COVER (1991-1998): CEDAR RIVER, WASHINGTON
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CHANGES IN DEVELOPED LAND COVER (1991-1998): CEDAR RIVER, WASHINGTON

机译：发达土地面积的变化（1991-1998年）：华盛顿州锡达里弗

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The lower Cedar River basin of western Washington has experienced major land conversions along an urban-rural gradient. This basin lies within King County's jurisdiction for managing population growth and providing open space for riparian habitats and other benefits. We addressed a major management question: What areas in the lower Cedar River basin are undergoing significant land cover changes that could impact riparian and aquatic habitats? The distribution of land cover changes was considered across physical, ecological, and political landscapes. Land cover within the basin was evaluated for change between 1991 and 1998. Significant increases in developed land cover in the more urbanized areas included the widening of a major highway on the river floodplains and conversion of isolated forest patches through infill development. More rural areas demonstrated increases in developed land cover which correspond with patterns of scattered low-density residential, clustered dense commercial and residential development near newly incorporated areas. Changes in land cover point to uncertainties for implementation of County programs for acquiring open spaces in riparian areas. Identification of changes in the extent of developed land cover classes, which infer changes in impervious cover, are designed to facilitate fine-resolution spatial hydrological modeling and future management.
机译：华盛顿西部的锡达河下游流域经历了城乡梯度的重大土地转换。该盆地位于金县管辖范围内，用于管理人口增长并为河岸生境和其他利益提供开放空间。我们解决了一个主要的管理问题：锡达河下游流域的哪些地区正在经历着可能影响河岸和水生生境的重大土地覆被变化？考虑了自然，生态和政治景观的土地覆盖变化分布。在1991年至1998年期间评估了流域内的土地覆被变化。在城市化程度更高的地区，发达土地覆被的显着增加包括河泛滥区的主要公路的拓宽和通过填土开发转化孤立的森林斑块。越来越多的农村地区显示出发达土地覆盖的增加，这与零散的低密度住宅，聚集密集的商业和住宅开发在新成立地区附近的模式相对应。土地覆盖的变化表明，实施沿河地区开放空间的县计划的实施存在不确定性。确定已开发的土地覆被类别范围的变化以推断不透水覆被的变化，旨在促进高分辨率的空间水文建模和未来管理。

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