Bryce SA, Clarke SE
Dynamac International, Inc., US EPA Environmental Research Laboratory, 200 S.W. 35th St., Corvallis, Oregon 97333, USA
Environ Manage. 1996 May;20(3):297-311. doi: 10.1007/BF01203839.
Regionalization is a form of spatial classification, where boundaries are drawn around areas that are relatively homogeneous in landscape characteristics. The process of delineating ecological regions, or ecoregions, includes the analysis of ecosystem structure. To date, ecoregions have been developed at national and state scales for research and resource management. Stream classification is another method to order the variability of aquatic habitats that spans spatial scales from microhabitat to valley segment. In this study, landscape-level ecoregions are developed for the upper Grande Ronde River basin in northeastern Oregon, 3000 sq km in area. The ecoregion framework presented here is proposed to bridge the gap between stream habitat and state-level ecoregion classifications. Classification at this scale is meant to address issues of management at local scales: to aid in sampling design, in extrapolation of the results of site-specific studies, and in the development of best management practices that are more predictive of ecosystem response than current methods.
区域划分是一种空间分类形式，即在景观特征相对同质的区域周围划定边界。划定生态区域（即生态区）的过程包括对生态系统结构的分析。迄今为止，已在国家和州层面开发了生态区用于研究和资源管理。溪流分类是另一种对水生栖息地变异性进行排序的方法，其空间尺度涵盖从微生境到河谷段。在本研究中，为俄勒冈州东北部面积达3000平方公里的格兰德朗德河上游流域开发了景观层面的生态区。这里提出的生态区框架旨在弥合溪流栖息地分类与州级生态区分类之间的差距。这种尺度的分类旨在解决地方尺度的管理问题：辅助抽样设计、推断特定地点研究的结果，以及制定比当前方法更能预测生态系统响应的最佳管理实践。
