不同株型小麦的双向反射分布函数特征研究

为了获得高精度的农作物生理生化参数的遥感反演结果和冠层结构信息提取,由多年地面观测的多角度数据结合半经验的二向性反射分布函数(bidirectional reflectance distribution function,BRDF)核驱动模型,利用红光(680 nm)和近红外波段(860 nm)的6个BRDF形状指示因子,分析了紧凑型小麦J411和披散型小麦Z9507的 BRDF 特征。研究表明:主平面上2种株型小麦的方向性反射率表现不同,拔节期披散型小麦的二向 NDVI (normalized difference vegetation index)大于紧凑型小麦;红光波段紧凑型小麦J411...

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Published in农业工程学报 Vol. 30; no. 9; pp. 157 - 167
Main Author 赵娟 黄文江 张耀鸿 景元书 宋晓宇 杨贵军 张清 孙雷刚
Format Journal Article
LanguageChinese
Published 南京信息工程大学应用气象学院,南京 210044%南京信息工程大学应用气象学院,南京,210044%中国科学院遥感与数字地球研究所,数字地球重点实验室,北京100094%北京农业信息技术研究中心,北京,100097%河北省科学院地理科学研究所,石家庄,050011 2014
中国科学院遥感与数字地球研究所,数字地球重点实验室,北京100094
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ISSN1002-6819
DOI10.3969/j.issn.1002-6819.2014.09.020

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Summary:为了获得高精度的农作物生理生化参数的遥感反演结果和冠层结构信息提取,由多年地面观测的多角度数据结合半经验的二向性反射分布函数(bidirectional reflectance distribution function,BRDF)核驱动模型,利用红光(680 nm)和近红外波段(860 nm)的6个BRDF形状指示因子,分析了紧凑型小麦J411和披散型小麦Z9507的 BRDF 特征。研究表明:主平面上2种株型小麦的方向性反射率表现不同,拔节期披散型小麦的二向 NDVI (normalized difference vegetation index)大于紧凑型小麦;红光波段紧凑型小麦J411的几何光学核系数大于披散型小麦 Z9507,紧凑型小麦几何光学效应更强;近红外波段披散型小麦体散射核系数大于紧凑型小麦,披散型小麦体散射效应更强。由此表明多角度观测数据更适于分析小麦冠层结构信息。该研究为多角度遥感在精准农业领域的应用提供参考。
Bibliography:11-2047/S
remote sensing;spectrum analysis;inversion;bidirectional reflectance distribution function;wheat geometry
Zhao Juan, Huang Wenjiang, Zhang Yaohong, Jing Yuanshu, Song Xiaoyu, Yang Guijun, Zhang Qing, Sun Leigang (1. Key Laboratory of Digital Earth Sciences, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beij'ing 100094, China; 2. School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China; 3. Beo'ing Research Center for Information Technology in Agriculture, Beijing 100097, China; 4. Institute of Geographic Sciences Research, Hebei Academy of Sciences, Shij'iazhuang 050011, China)
Canopy structural property is a noticeable factor that exerts a certain influence on canopy bidirectional reflectance, thus it is primarily significant to detect a crop structure signature to refer to quantified remote sensing. This paper analyzed the variations in bidirectional reflectance of erective wheat J411 and loose wheat Z9507 under differen
ISSN:1002-6819
DOI:10.3969/j.issn.1002-6819.2014.09.020