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首页> 外文期刊>Ocean & coastal management >Assessing coastal management plans using watershed spatial models for the Mississippi delta, USA, and the Ususmacinta-Grijalva delta, Mexico
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Assessing coastal management plans using watershed spatial models for the Mississippi delta, USA, and the Ususmacinta-Grijalva delta, Mexico

机译:使用分水岭空间模型评估美国密西西比三角洲和墨西哥Ususmacinta-Grijalva三角洲的沿海管理计划

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摘要

Holistic performance measures for coastal restoration are needed as management alternatives are implemented in the Gulf of Mexico. Regional questions can be addressed with watershed models using large-scale spatial dynamics to examine environmental impacts. Two watershed models investigated habitat shifts in the largest deltas of the Gulf of Mexico. One model varied river forcing scenarios in the Mississippi delta, USA, an area with restricted freshwater inputs. The other model investigated the Centla swamps, part of the Usumacinta-Grijalva delta in Mexico, a region with unrestricted freshwater inputs. Wetland conversion to open water and yearly shifts of marsh habitats in these two contrasting watersheds were assessed. Models forecasted effects of industrial development and river diversion management plans for 10 and 50 years. Results indicated that healthy functioning of both deltas depended largely on river-borne contributions. Watershed models can provide natural resource managers, decision makers with a scientific instrument for environmental policy.
机译:由于在墨西哥湾实施了管理替代方案,因此需要用于沿海恢复的整体绩效措施。可以使用分水岭模型解决区域性问题,该模型使用大规模空间动力学来检查环境影响。两种分水岭模型调查了墨西哥湾最大三角洲的栖息地变化。在美国密西西比河三角洲,淡水输入受限的地区,一种模型改变了河流强迫的情景。另一个模型调查了淡水输入不受限制的墨西哥地区的Usumacinta-Grijalva三角洲的Centla沼泽。在这两个截然相反的流域,评估了湿地向开阔水域的转化以及沼泽生境的年变化。模型预测了10年和50年的工业发展和引水管理计划的效果。结果表明,两个三角洲的健康运转在很大程度上取决于河流的贡献。流域模型可以为自然资源管理者,决策者提供科学的环境政策工具。

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