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首页> 外文期刊>Journal of the American Water Resources Association >'Adapting Existing Models to Examine Effects of Agricultural Conservation Programs on Stream Habitat Quality,' by F. Douglas Shields, Jr., Eddy J. Langendoen, and Martin W. Doyle
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'Adapting Existing Models to Examine Effects of Agricultural Conservation Programs on Stream Habitat Quality,' by F. Douglas Shields, Jr., Eddy J. Langendoen, and Martin W. Doyle

机译：F. Douglas Shields，Jr.，Eddy J. Langendoen和Martin W. Doyle撰写的“适应现有模型以检验农业保护计划对河流栖息地质量的影响”

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摘要

Shields et al. (2006) proposed a "leveraged" approach to be used for assessment of effects of agricultural conservation programs on stream habitat quality as requested by the Conservation Effects Assessment Project (CEAP). While important, assessment of stream habitat is fraught with difficulty due to the poor understanding of intricate relationships between watershed practices and degradation of stream habitats. Stream habitats are complex and interconnected, being composed of stream channel, contiguous habitats in shallow ground water, adjacent wetlands, other riparian habitats, and floodplain water bodies (Shields et al., 2006). The relationships among these components are further complicated by weather, climate, and climate change. Also, our limited understanding of the link between watershed practices and stream corridor habitat quality may be partially attributed to the subject boundary between hydrology and ecology, which developed as separate disciplines. As a result, outputs from models focusing on the hydrologic aspects of an ecosystem may be limited as direct inputs into models focusing on the eco-logic aspects of the ecosystem. This may be one reason for Shields et al. (2006) to propose the leveraged approach to adapt existing models to conduct detailed analyses of conservation effects within selected watersheds, which is the second component of CEAP. Adhering to the authors' proposal, we herein extend discussion of, and suggest some strategies for appropriately applying, the proposed leveraged approach.
机译：希尔兹等。 （2006年）提出了一种“杠杆”方法，用于按照保护效果评估项目（CEAP）的要求评估农业保护计划对河流栖息地质量的影响。尽管很重要，但由于对流域做法与河流生境退化之间的复杂关系了解不足，对河流生境的评估充满了困难。河流生境复杂且相互联系，由河流通道，浅层地下水中的连续生境，邻近的湿地，其他河岸生境和洪泛区水体组成（Shields等，2006）。天气，气候和气候变化进一步加剧了这些组成部分之间的关​​系。同样，我们对流域实践与河流走廊生境质量之间联系的有限理解可能部分归因于水文学与生态学之间的学科边界，这是作为独立学科发展起来的。结果，侧重于生态系统水文方面的模型的输出可能会受到限制，无法直接作为侧重于生态系统生态学方面的模型的输入。这可能是Shields等人的原因之一。 （2006年）提出了一种利用现有方法来对选定流域内的保护效果进行详细分析的杠杆方法，这是CEAP的第二个组成部分。遵循作者的建议，我们在此扩展了对所建议的杠杆方法的讨论，并提出了一些适当应用所建议的杠杆方法的策略。

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