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首页> 外文会议>Tenth International Conference on Modelling, Monitoring and Management of Air Pollution Jul, 2002 City of Segovia >Ecological monitoring of terrestrial ecosystem recovery from man-made perturbation: assessing community complexity
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Ecological monitoring of terrestrial ecosystem recovery from man-made perturbation: assessing community complexity

机译：人为扰动对陆地生态系统恢复的生态监测：评估社区的复杂性

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The dynamics of ecological complexity are presented from an area severely damaged by air pollution to understand the effect of perturbation intensity on long-term recovery dynamics of forest communities. Perturbation is assumed to be most intense near the smelter and to decrease with distance. Complexity is assessed using Shannon entropy as well as a contemporary measure of structural complexity. We find that while total complexity and diversity increase with decreasing perturbation intensity, structural complexity does not. It is also uncovered that community-level dynamics are more predictable than species-level dynamics. The data were analyzed using multivariate methods to determine how spatial pattern and groupings produce trends in community-level dynamics. The perturbation gradient is characterized by a continuum of understory communities with colonizing and metal-tolerant species proximal to the pollution source and sensitive species at distal sites. The overstory community mimicked this pattern, but vertical structure was found to be important in characterizing the gradient. Ecological monitoring of the multi-level effects of pollution on ecosystems is important for understanding the full implications of multiple stressors in the environment.
机译：从空气污染严重破坏的地区介绍了生态复杂性的动态，以了解扰动强度对森林群落长期恢复动态的影响。假定扰动在冶炼厂附近最为强烈，并且随着距离的增加而减小。使用Shannon熵以及结构复杂度的当代度量来评估复杂度。我们发现，虽然总复杂度和多样性随着扰动强度的降低而增加，但结构复杂度却没有。还发现社区级别的动态比物种级别的动态更可预测。使用多变量方法对数据进行了分析，以确定空间模式和分组如何产生社区层面动态的趋势。摄动梯度的特征是连续的林下群落，在污染源附近有定居和耐金属菌种，在远端部位有敏感菌种。楼上的社区模仿了这种模式，但发现垂直结构在表征坡度方面很重要。对污染对生态系统的多层次影响进行生态监测对于理解环境中多种压力源的全部影响很重要。

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