林业科学2011，Vol.47Issue(9)：75-81,7.
基于Prospect,Liberty和Geosail模型的森林叶面积指数的反演
Leaf Area Index Retrieval Based on Prospect,Liberty and Geosail Models
摘要
Abstract
Leaf area index ( LAI) is a key forest structural parameter which plays an important role in controlling the exchange and cycle process of maters and energy in land ecosystem. Because of the disadvantages of unstable and various statistical models for LAI retrieval, this paper presents a new method of LAI retrieval from TM images based on the Geosail bidirectional canopy reflectance model coupled with the Prospect and Liberty leaf optical properties model and look-up-table. Compared with the LAI measurements by TRAC( tracing radiation and architecture of canopies) , the results show that LAI estimated from phyisical models and look-up-table and LAI measurements are in good agreement, with precision is 83. 7% .关键词
叶面积指数/TM/查找表/Prospect/Liberty/GeosailKey words
leaf area index (LAI) / TM/ look-up-table/ Prospect/ Liberty/ Ceosail分类
农业科技引用本文复制引用
李海洋,范文义,于颖,杨曦光..基于Prospect,Liberty和Geosail模型的森林叶面积指数的反演[J].林业科学,2011,47(9):75-81,7.基金项目
国家林业局"948"项目(2011-04-80). （2011-04-80）
