Economics of carbon, nitrogen and water use in Acacia and Eucalyptus

金合欢树和桉树碳、氮和水利用的经济学

• 批准号: DP0343843
• 负责人: A/Prof Charles Warren
• 金额: $ 17.81万
• 依托单位: The University of Melbourne
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2003
• 资助国家: 澳大利亚
• 起止时间: 2003-07-24 至 2006-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP0343843
• 关键词: Economics; carbon; nitrogen; water; use

Australia's flora is dominated by plants with sclerophyllous foliage, that is hard leaves that are tolerant of nutrient and/or water stress. Either nutrient and/or water stress are suggested as driving the evolution of sclerophylly and distribution of extant species. Mechanisms of tolerance to drought and nutrient stress differ, and these differences are reflected in patterns of nitrogen and carbon allocation and economics of nitrogen and water use in photosynthesis. The present study will use these differences in economics to distinguish between water- and nutrient-driven adaptations in a range of Acacia and Eucalyptus species from mesic to arid environments.

澳大利亚的植物群以具有硬叶的植物为主，硬叶是耐受营养和/或水分胁迫的硬叶。 营养和/或水分胁迫被认为是驱动现存物种的石瓣和分布的演变。 耐旱和养分胁迫的耐受机制不同，这些差异反映在光合作用中氮和碳的分配模式以及氮和水利用的经济性上。 本研究将利用这些经济差异，区分水和营养驱动的适应范围内的相思树和桉树物种从中干旱环境。