生态干旱的概念及研究进展

分析了生态干旱的研究背景及概念框架，系统阐述了生态干旱监测指标、气象要素和地下水对生态干旱的驱动机制以及生态干旱的脆弱性评估方法等研究进展，指出生态干旱研究还处于起步阶段，应进一步开展生态干旱指数构建与评估方法、气象干旱和地下水干旱对生态干旱的联合驱动机制以及生态干旱的脆弱性评估与预测方法等方面的研究，以期推动生态干旱研究的发展，拓展干旱分类和干旱指标研究的理论体系。

Concept and research progress of ecological drought

The research background and conceptual framework of ecological drought were analyzed, and the research progress including ecological drought monitoring index, driving mechanisms of meteorological elements and groundwater to ecological drought, and vulnerability assessment method of ecological drought were systematically reviewed. It is pointed out that the research of ecological drought is still in its infancy. Further research should be carried out on the construction and assessment methods of ecological drought index, the joint driving mechanism of meteorological drought and groundwater drought on ecological drought, and the vulnerability assessment and prediction methods of ecological drought, so as to promote the development of ecological drought research and expand the theoretical system of drought classification and drought index research