Dissertation Research: Changes in Carbon and Nitrogen Cycling at Multiple Scales Across a Prairie Restoration Chronosequence

论文研究：草原恢复时序中碳和氮循环在多个尺度上的变化

• 批准号: 0105096
• 负责人: Hormoz BassiriRad
• 金额: $ 0.98万
• 依托单位: University of Illinois at Chicago
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-06-15 至 2002-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0105096&HistoricalAwards=false
• 关键词: Dissertation; Research; Changes; Carbon; Nitrogen

Diana Lane, University of Illinois, Chicago. Ecosystem restoration has become a widespread activity in recent years. Little is known, however, about the success of restoration projects in restoring soil quality. The objectives of the research are 1) to characterize changes in soil nutrients as restoration proceeds over time, and 2) to determine the mechanisms that control such changes. The investigators will conduct field studies and experiments across a unique 25-year chronosequence of tallgrass prairie restoration sites that were created on former agricultural land. An important aspect of this research is to determine whether the temporal and spatial variability of soil resources increase following restoration. Variability in soil resources is characteristic of natural systems but may decrease when soils are used for agriculture. Results from this study will improve understanding of the functional consequences of restoration. In addition, these results will have broader implications for understanding the development of plant-soil feedbacks following disturbance.

戴安娜·莱恩，伊利诺伊大学，芝加哥。 生态系统恢复是近年来广泛开展的一项活动。然而，人们对恢复项目在恢复土壤质量方面的成功知之甚少。研究的目的是：1）表征土壤养分随时间推移而发生的变化，2）确定控制这种变化的机制。研究人员将在一个独特的25年时间序列中进行实地研究和实验，这些时间序列是在以前的农业用地上建立的高草草原恢复地点。这项研究的一个重要方面是确定恢复后土壤资源的时空变异性是否增加。土壤资源的可变性是自然系统的特征，但当土壤用于农业时，可能会减少。这项研究的结果将提高对修复功能后果的理解。此外，这些结果将有更广泛的影响，了解植物-土壤反馈的发展后，干扰。