Brown is the new green: grassland responses to drought and heat

棕色是新绿色：草原对干旱和炎热的反应

• 批准号: DP180102203
• 负责人: Prof Belinda Medlyn
• 金额: $ 34.01万
• 依托单位: Western Sydney University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2018
• 资助国家: 澳大利亚
• 起止时间: 2018-05-01 至 2022-04-30
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP180102203
• 关键词: Brown; new; green; grassland; responses

This project aims to improve accuracy and precision in predicting the impact of water availability and heat stress on grassland function. Grassland ecosystems are important reservoirs of global biodiversity and carbon storage. Grasslands are highly sensitive to drought and heat stress, but studies recently showed that current grassland models cannot predict these responses because they do not adequately represent the key processes of physiological drought tolerance, leaf browning, and species traits. This project will collect targeted data sets in order to develop and test model representations of these key processes. This will provide significant benefits, such as greatly increasing capacity to predict the impact of drought and heat stress on grasslands, at scales ranging from field to globe.

该项目旨在提高预测水分有效性和热胁迫对草地功能影响的准确性和精度。草地生态系统是全球生物多样性和碳储量的重要储存库。草地对干旱和热胁迫高度敏感，但最近的研究表明，现有的草地模型不能预测这些响应，因为它们不能充分代表生理耐旱性、叶片布朗宁和物种性状的关键过程。该项目将收集有针对性的数据集，以开发和测试这些关键流程的模型表示。这将带来巨大的好处，例如大大提高从田间到地球仪的预测干旱和高温对草地影响的能力。