Research Advances of Health Assessment of Urban Forests

Urban forest health assessment is an important prerequisite for the development of urban forest health. Based on a brief overview of urban forests,urban forest health and urban forest health assessment, the paper summarized the research progress of urban forest health assessment,including choices of evaluation scale,determination of evaluation and assessment methods,classification of the evaluation results and so on. The problems of urban forest health assessment are raised,such as the unclear concepts,imperfect evaluation,immature evaluation methods and insufficient research. And then the paper proposes the future trend of the current research.