Department of Agricultural and Applied Economics, Virginia Tech, Blacksburg, VA 24061, USA.
J Environ Manage. 2012 Dec 15;112:226-32. doi: 10.1016/j.jenvman.2012.07.031. Epub 2012 Aug 30.
Successful watershed planning can be enhanced by stakeholder involvement in developing and implementing plans that reflect community goals and resource limitations. Community DECISIONS (Community Decision Support for Integrated, On-the-ground Nutrient Reduction Strategies) is a structured decision process to help stakeholders evaluate strategies that reduce watershed nutrient imbalances. A nutrient accounting algorithm and nutrient treatment database provide information on nutrient loadings and costs of alternative strategies to reduce loadings. Stakeholders were asked to formulate goals for the North Fork Shenandoah River Watershed in Virginia and select among strategies to achieve those goals. The Vector Analytic Hierarchy Process was used to rank strategies. Stakeholders preferred a Maximum strategy that included point source upgrades, riparian buffers, no-till corn silage, wheat cover, and bioretention filters in developed areas. Participants generally agreed that the process helped improve communication among stakeholders, was helpful for watershed planning, and should be used for TMDL (Total Maximum Daily Load) planning. Participants suggested more attention be paid to ensuring that all relevant issues are addressed and all information needed to make decisions is available. Watershed planning should provide stakeholders with clear scientific information about physical and socioeconomic processes. However, planning processes must give stakeholders adequate time to consider issues that may not have been addressed by existing scientific models and datasets.
成功的流域规划可以通过利益相关者参与来增强,他们可以制定和实施反映社区目标和资源限制的计划。社区决策(用于综合地面营养减少策略的社区决策支持)是一个结构化的决策过程,可帮助利益相关者评估减少流域营养失衡的策略。养分核算算法和养分处理数据库提供了替代策略减少负荷的养分负荷和成本信息。要求利益相关者为弗吉尼亚州北叉雪兰多亚河流域制定目标,并在实现这些目标的策略中进行选择。向量分析层次过程用于对策略进行排名。利益相关者更喜欢包括点源升级、河岸缓冲区、免耕玉米青贮、小麦覆盖和开发区域中的生物滞留过滤器的最大策略。参与者普遍认为该过程有助于改善利益相关者之间的沟通,对流域规划有帮助,并且应该用于 TMDL(最大日负荷总量)规划。参与者建议更加注意确保解决所有相关问题,并提供做出决策所需的所有信息。流域规划应为利益相关者提供有关物理和社会经济过程的清晰科学信息。但是,规划过程必须为利益相关者提供足够的时间来考虑可能未被现有科学模型和数据集解决的问题。