江西农业大学学报2011，Vol.33Issue(3)：508-513,552,7.
不同叶面积指数遥感反演方法对红壤丘陵区森林的适用性分析
The Applicability of Different Methods for Retrieving Leaf Area Index of Forests in Red Soil Hilly Regions
摘要
Abstract
Based on field measurements of forest leaf area index (LAI) and concurrent landsat TM data, a high resolution map of forest LAI for Taihe County, Jiangxi Province was produced. Based on this map, the quality of LAI inversed using the method based on 4-scale geometrical optical model and MODIS LAI was assessed. It was found that noticeable difference exists between MODIS LAI and LAI inversed using the method based on the 4-scale model, with a R2 value of 0.312 5. The means of LAI inversed using the method based on the 4-scale model and MODIS LAI are 14.0% and 11.7% lower than that of TM LAI at 1 km resolution, respectively. In areas with low LAI values, MODIS LAI is higher than TM LAI while LAI inversed using the method based on the 4-scale model is lower than TM LAI. In areas with high LAI values ( LAI > 6.0), both MODIS LAI and LAI inversed using the method based on the 4-scale model are lower than TM LAI. Especially, MODIS LAI is 34.1% lower compared with TM LAI.关键词
叶面积指数/植被指数/MODIS LAI/LAI反演Key words
leaf area index/ vegetation Index/ MODIS LAI/ LAI inversion分类
农业科技引用本文复制引用
陈崇,朱延君,李显风,居为民..不同叶面积指数遥感反演方法对红壤丘陵区森林的适用性分析[J].江西农业大学学报,2011,33(3):508-513,552,7.基金项目
国家自然科学基金(40871240/D011004)和863项目(2009AA12Z134)资助 （40871240/D011004）
