摘要
叶面积指数(LAI)是指植物植株所有叶片单面面积总和与植株所占的土地面积的比值,能反映可用于光能截获和气体交换的植物潜在叶片面积,是研究农学、林学、生态学、气象学等学科的重要参数。本文总结了国内外测定叶面积指数的主要方法,地面测定LAI和遥感反演LAI两大类方法的研究进展,同时阐述了LAI尺度转换的问题,并对各种测定方法进行了讨论,提出了一些改进的方法。
Leaf Area Index（LAI） is the ratio of the sum of all the single-side leaf area from a plant to the land area that the plant occupies.LAI can reflect the potential leaf area of the plant that could be used for interception of light and gas exchange.LAI is one of the important parameters for studies of agriculture,forestry,ecology,meteorology,etc.Therefore,the exact determination of LAI has a great significance.This paper sums up the determination methods of LAI in recent years,especially the methods that have great potentialities in future,including the following three aspects：Ground-based LAI Measurement and Remote Sensing Inversion LAI measurement,and Scale Transformation,and puts forward some suggestion to improving these determination methods.
出处
《四川林业科技》
2010年第3期51-54,78,共5页
Journal of Sichuan Forestry Science and Technology
基金
国家自然基金项目:基于小班对象的森林资源数据库多源遥感更新研究(40771144)
关键词
叶面积指数(LAI)
遥感反演
空间尺度
Leaf Area Index（LAI）
Remote Sensing Inversion
Scale Transformation
