地形因子对森林冠层BRF模拟的影响分析  

An Analysis on Terrain Factor Influence on Forest Canopy BRF Simulation

作　　者：王新云[1,2] 郭艺歌[1] 过志峰[2] 覃文汉 孙国清[2,3] 

机构地区：[1]宁夏大学西北退化生态系统恢复与重建教育部重点实验室,银川750021 [2]遥感科学国家重点实验室,中国科学院遥感应用研究所,北京100101 [3]Department of Geography,University of Maryland,MD 20742,USA [4]SSAI/NASA GSFC,Greenbelt,MD 20771,USA

出　　处：《遥感信息》2012年第4期82-85,共4页Remote Sensing Information

基　　金：宁夏大学科学自然基金资助项目(NDZR10-12);宁夏自然科学基金项目(NZ1111)

摘　　要：针对利用计算机模拟模型进行森林冠层BRF模拟时,地形因子——高程、坡度和坡向对森林冠层接收太阳辐射的影响等问题,本文探讨了利用RGM(Radiosity-Graphics combined Model)模型进行森林冠层反射特性的研究,研究了将森林生长ZELIG模型和L-系统结合起来构建三维森林场景,并采用RGM模型模拟森林冠层的二向性反射特性。研究结果表明地形因子对BRF分布影响非常明显。There were difficulties for the computer simulation method while to study the BRF（Bidirectional Reflectance Factor） distribution of the forest canopies.Terrain factor,including elevation,slope and aspect,has an impact on the vegetation of solar radiation received.Radiosity-Graphics combined Model（RGM） was applied to investigate the radiance distribution of forest canopy in this study.Combined use of the forest growth model ZELIG and L-systems to render 3-D forest scenarios,and RGM model was used to calculate BRF.The results show it is very obvious that the terrain factors have an influence on the BRF distribution.

关 键 词：RGM模型 双向反射率因子 地形因子 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]