基于Gash模型的林冠降水截留研究综述
摘要：林冠降水截留对于水土保持的作用是森林生态学的重要研究内容之一。根据近年来国内外最新的研究资料，综合介绍了应用Gash模型的林冠降水截留方面的研究现状与成果，分析和讨论存在的问题。气象条件与林木本身特性是影响林冠截留的重要因子，林冠截留与二者之间相关关系密切，但林冠降水截留对影响因素变化的响应于机制仍不确定。模拟林冠降水截留的模型有多种，但Gash解析模型仍被普遍使用。影响冠层降水的因子对冠层截留能力贡献仍不明确，因此在今后的研究中，应规范统一不同森林生态系统的林冠降水截留测定方法，明确各因子对林冠截留的影响，林冠截留的时空异质性，林冠截留各因子对林冠截留的影响以及各因子之间的内在规律。
关键词：林冠降水截留；Gash模型；影响因素；综述
A review of canopy interception based on Gash model
ZHAI Guang-qing1，JIANG Jiang1
(College of Forestry Nanjing Forestry University of Jiangsu province, Nanjing 210037, China)
Abstract: The effect of canopy precipitation interception on water and soil conservation is one of the important research contents of forest ecology. According to the latest research data at home and abroad in recent years, this paper comprehensively introduces the research status and results of canopy precipitation interception using Gash model, and analyzes and discusses existing problems. Meteorological conditions and the characteristics of the trees themselves are important factors affecting canopy interception, and the relationship between canopy interception and the two features are closely related, but the response mechanism of canopy precipitation interception to changes in influencing factors is still uncertain. There are many models for simulating precipitation interception by forest canopy, but Gash analytical model is still widely used. The contribution of factors influencing canopy interception capacity is still unclear. Therefore, in future research, the measurement methods of canopy precipitation interception in different forest ecosystems should be standardized and unified, and the influence of each factor on canopy interception should be clarified.
Heterogeneity, the influence of canopy interception factors on the canopy interception and the internal laws between the factors.
Key words: canopy precipitation interception; Gash model; interfering factors; Review
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