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Application of a Karst Disturbance Index in Hillsborough County, Florida

机译:喀斯特扰动指数在佛罗里达州希尔斯伯勒县的应用

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摘要

Hillsborough County, Florida, is a karst region that is heavily urbanized, yet no study has been undertaken measuring the degree of human disturbance. Van Beynen and Townsend (2005) created a hierarchical and standardized disturbance index specifically designed for karst environments. To address the problem of determining human disturbance in the county, the above index was successfully applied and it was found that Hillsborough was highly disturbed (disturbance score of 0.69 of 1.0) because of its predominant urban and rural land use. Furthermore, the application of the index allowed for its refinement and the highlighting of environmental aspects in need of remediation such as soil compaction, deforestation, disturbance of archaeological sites, and the expanding urban footprint. Several minor issues arose during the application: the need for broader indicator descriptions that encompass a variety of scenarios, the need for a revised water quality indicator, inadequate data on sinkholes, and a lack of data for species richness and species population density. The utility of the index to resource managers arises from emphasizing certain areas of the environment that require immediate attention and determining temporal changes in environmental quality. Future application of the index requires potential retooling of the biota indicators, tightening of scoring descriptions for certain indicators, and further examination of the scale at which the index can be applied.
机译:佛罗里达州的希尔斯伯勒县是一个高度城市化的喀斯特地区,但尚未进行任何衡量人为干扰程度的研究。 Van Beynen和Townsend(2005)创建了专门针对喀斯特环境设计的分级和标准化干扰指数。为了解决确定该县人为干扰的问题,上述指标已成功应用,并且发现希尔斯伯勒市由于其主要的城市和农村土地使用而受到高度干扰(干扰得分为0.69 / 1.0)。此外,该指数的应用允许对其进行完善和强调需要补救的环境因素,例如土壤压实,森林砍伐,考古遗址的干扰以及城市足迹的扩大。在申请过程中出现了一些小问题:需要涵盖各种情况的更广泛的指标描述,需要修订的水质指标,污水坑数据不足以及缺乏物种丰富度和种群密度的数据。该指数对资源管理者的作用来自强调需要立即引起注意的环境的某些区域并确定环境质量的时间变化。该指数的未来应用需要对生物群指标进行潜在的调整,对某些指标的评分描述进行更严格的处理,并进一步检查该指数的适用范围。

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