Hydrology of a Scrub-Oak Woodland under Carbon Dioxide Enrichment

二氧化碳富集条件下灌木橡树林地的水文学

• 批准号: 9873715
• 负责人: Bruce Hungate
• 金额: $ 37.5万
• 依托单位: Northern Arizona University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-05-01 至 2003-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9873715&HistoricalAwards=false
• 关键词: Hydrology; Scrub; Oak; Woodland; under

ABSTRACTHungate98-73715Hydrology of Scrub-Oak Woodland Under Carbon Dioxide EnrichmentOver the past 150 years, our industrial society - by burning coal, oil, and gasoline - has increased the amount of carbon dioxide (CO2) in the atmosphere; CO2 levels are predicted to continue to increase in the next 50-100 years. This research project will determine how this increase in CO2 will affect the way plants take up water from the soil. Normally, plants take in CO2 through small pores on their leaves, but in the process they lose water to the atmosphere. When the amount of CO2 increases in the atmosphere, plants respond by closing these pores, reducing the amount of water lost, and reducing amount of water plants take up from the soil. However, the consequences for water cycling in soil are unknown. This research will determine whether increasing CO2 affects the amount of water plants take up from the soil, the depth in the soil at which plants take up water, and the consequences of these changes for other soil water cycling.

灌注二氧化碳在二氧化碳浓度下的灌木木地块的浸水量为98-73715，过去150年来，我们的工业学会（通过燃烧煤炭，石油和汽油）增加了大气中二氧化碳（CO2）的量；预计在接下来的50 - 100年中，二氧化碳水平将继续升高。 该研究项目将确定二氧化碳的增加将如何影响植物从土壤中取水的方式。 通常，植物通过叶子上的小毛孔吸收二氧化碳，但在此过程中，它们会流失到大气中。 当二氧化碳量增加时，植物通过关闭这些毛孔，减少损失的水量而做出反应，减少水厂的数量从土壤中占用。但是，尚不清楚土壤中水循环的后果。 这项研究将确定二氧化碳增加是否影响水厂从土壤中占用的量，植物占水的土壤的深度以及这些变化对其他土壤水循环的后果。