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首页> 外文期刊>Proceedings of the Arkansas Academy of Science >A Conceptual Basis for an Index of Forest Integrity for Upland Coastal Plain Ecosystems
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A Conceptual Basis for an Index of Forest Integrity for Upland Coastal Plain Ecosystems

机译：沿海沿海平原生态系统森林完整性指数的概念基础

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摘要

Following the recent trend to manage natural resources for "sustainability," ecologists, resource managers and policymakers are beginning to think of the management of forest ecosystems in terms of "ecosystem health" or "ecosystem integrity." Biologists are increasingly recognizing that use of chemical assays in assessing the condition of an ecosystem has limited value, and that biological factors, e.g., species diversity and composition, can be useful characters in the analysis of "biotic integrity." An index of biotic integrity (IBI) has been developed for riverine ecosystems in the Midwest U.S., using fish species diversity, indicator population analysis, trophic structure assessment, and physiological abnormalities in fish as measurable surrogates for "biotic integrity". This paper explores the development of an analogous index of forest integrity (IFI) to be applied to the upland coastal plain forests of southern Arkansas and northern Louisiana. The IFI developed here includes sampling and analysis of population trends of dominant plant taxa, plant species diversity, and horizontal and vertical vegetative structure at midstory, shrub and detritus levels.
机译：随着近来为“可持续性”管理自然资源的趋势，生态学家，资源管理者和政策制定者开始以“生态系统健康”或“生态系统完整性”来思考森林生态系统的管理。生物学家越来越认识到，使用化学分析法评估生态系统的条件具有有限的价值，并且生物学因素，例如物种多样性和组成，可以作为分析“生物完整性”的有用特征。美国中西部的河流生态系统已开发出生物完整性指数（IBI），使用鱼类物种多样性，指标种群分析，营养结构评估和鱼类生理异常作为“生物完整性”的可衡量替代指标。本文探讨了适用于阿肯色州南部和路易斯安那州北部的陆上沿海平原森林的森林完整性类似指数（IFI）的发展。这里开发的IFI包括采样和分析主要植物类群，植物物种多样性以及中，灌木和碎屑水平的水平和​​垂直营养结构的种群趋势。

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