U.S.-Chile Research: Desertification and Soil Disturbance in the Arid Regions of Chile: The Role of Mycorrhizal Fungiin the Restoration of Atriplex Shrub Communities

美国-智利研究：智利干旱地区的荒漠化和土壤扰动：菌根真菌在滨藜灌木群落恢复中的作用

• 批准号: 9416708
• 负责人: Carl Friese
• 金额: $ 3.95万
• 依托单位: University of Dayton
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-11-15 至 1997-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9416708&HistoricalAwards=false
• 关键词: U.S.; Chile; Research; Desertification; Soil

9416708 Friese This Americas Program award will support a collaborative research project between Dr. Carl Friese, University of Dayton, and Dr. Lorgio Aguilera, Universidad de la Serena, Chile. The objective is to study the symbiosis between mycorrhizal fungi and plant species belonging to the genus Atriflex in order to better understand the effect of desertification on the plant and microbial communities, as well as the natural disturbance regime, in the arid regions of Chile. A descriptive analysis of the plant-microbe communities currently undergoing desertification will be compared to that of a protected site in the same region. Two integral components of arid ecosystems will be studied: plant-microbe communities, and small scale disturbances. Descriptive studies of the plant, fungal and microbial communities will be linked together with spatial analyses of animal disturbance, along with experimental studies of the effect of the disturbance on plant-microbe interaction. This complete analysis will yield much more information about desertification than a single study of the system. Desertification is the process by which the productivity and soil quality of ecosystems are significantly reduced. As a result of mining and farming activities, much of the arid land of Chile has been subject to desertification. The effects of this process on arid lands can be devastating, nearly eliminating the ground forage for livestock and other animals. The aim of this study is to determine the specific processes of desertification that are causing the loss of soil fertility and thus, plant community diversity, with the ultimate goal of reversing or halting the desertification process. ***

9416708 Friese 该美洲计划奖将支持代顿大学 Carl Friese 博士和智利拉塞雷纳大学 Lorgio Aguilera 博士之间的合作研究项目。 目的是研究菌根真菌与滨藜属植物物种之间的共生关系，以便更好地了解荒漠化对智利干旱地区植物和微生物群落以及自然干扰状况的影响。 对目前正在荒漠化的植物微生物群落的描述性分析将与同一地区受保护地点的植物微生物群落进行比较。 将研究干旱生态系统的两个组成部分：植物微生物群落和小规模干扰。 植物、真菌和微生物群落的描述性研究将与动物干扰的空间分析以及干扰对植物-微生物相互作用影响的实验研究联系在一起。 与对系统的单一研究相比，这种完整的分析将产生更多有关荒漠化的信息。 荒漠化是生态系统生产力和土壤质量显着下降的过程。 由于采矿和农业活动，智利的大部分干旱土地已经荒漠化。 这一过程对干旱土地的影响可能是毁灭性的，几乎消除了牲畜和其他动物的地面饲料。 本研究的目的是确定导致土壤肥力丧失和植物群落多样性丧失的荒漠化具体过程，最终目标是扭转或停止荒漠化过程。 ***