Doctoral Dissertation Research: Exposure of Riparian Trees to Coal Emissions: Does It Produce Geographic Variation in Water-Use Efficiency

9508033瓦莱里·J·特维利格·恩米·帕克堪萨斯大学学位论文改进研究：河岸树木暴露在煤炭排放下：它是否会导致水分利用效率的地理差异？这项研究将阐明燃煤对窄叶柳树光合作用和蒸腾作用的影响。将通过实验室和现场实验来研究燃煤对工厂生产力的影响。大多数生理学研究都将幼年作物物种暴露在单一大气气体的不切实际的高浓度下。目前尚不清楚这些研究是否有助于理解自然植被在野外条件下对更复杂的大气污染物的反应。这项研究将通过对两种重要成分排放对柳树气体交换特性的作用提供更现实的理解来解决这一缺点。这项研究还将对过去对大气二氧化碳浓度变化的生物反应进行现代测试。这项工作旨在填补微观研究和宏观空气污染模型之间的知识空白。

SBR-9508033 Valery J. Terwilliger Eunmi Park University of Kansas Dissertation Improvement Research: Exposure of Riparian Trees to Coal Emissions: Does It Produce Geographic Variation in Water Use Efficiency? The proposed research will elucidate the effects of coal combustion on the photosynthesis and transpiration activities of the narrow leaf willow. Both laboratory and field experiments will be used to investigate the effects of coal combustion on plant productivity. Most physiological studies have exposed young crop species to unrealistically high concentrations of single atmospheric gases. It is unclear whether these studies contribute to understanding the responses of natural vegetation to more complex atmospheric pollutants under field conditions. This study will address this shortcoming by providing a more realistic understanding of the roles of two important component emissions on the gas exchange properties of the willow. The study will also provide a modern test of past biotic responses to changes in the concentrations of atmospheric carbon dioxide. The work is intended to fill a gap in knowledge between studies at a micro-scale and air pollution modeling at a macro-scale.