| 太阳辐射强度与观测角度对冬小麦冠层反射高光谱的影响 |
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| 引用本文： | 郭建茂,王 迁,童应详,费敦悦,刘俊伟.太阳辐射强度与观测角度对冬小麦冠层反射高光谱的影响[J].农业工程学报,2016,32(10):157-163. |
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| 作者姓名： | 郭建茂 王 迁 童应详 费敦悦 刘俊伟 |
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| 作者单位： | 1. 南京信息工程大学气象灾害预报预警与评估协同创新中心/江苏省农业气象重点实验室/应用气象学院,南京,210044;2. 安徽省寿县气象局,寿县,232200 |
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| 基金项目： | 国家自然科学基金(41071282)；科技部行业专项(GYHY201506018)；江苏省重点研发计划(现代农业)项目(BE2015365)；中国气象局预报预测核心业务发展专项(CMAHX20160311) |
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| 摘 要： | 掌握冠层反射光谱二向性反射特征,对提高遥感应用精度有重要意义。该文利用地面自动遥感平台对冬小麦冠层进行了连续观测,获取了大量的多角度高光谱遥感数据,分析了多种因素对冠层反射光谱的影响,并进行了NDVI与EVI的对比分析。结果表明:冠层反射光谱对天气有响应,随着太阳辐射增加冠层反射光谱增高,晴天变化更明显;观测角度的改变导致冠层反射光谱的差异,可用"热点效应"加"镜面反射"解释;与上述条件相适应,NDVI与EVI也表现出与冠层反射光谱相似变化;受红光和近红外波段的变化影响,NDVI与EVI之间的变化趋势较一致,两者相关系数R20.72,且P0.01,呈极显著相关。该研究结果可为遥感观测角度的选择设计和植被指数的应用提供理论参考。
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| 关 键 词： | 作物 光谱分析 反射 冠层 小麦 NDVI EVI |
| 收稿时间： | 2016/2/16 0:00:00 |
| 修稿时间： | 2016/3/25 0:00:00 |
Effect of solar radiation intensity and observation angle on canopy reflectance hyperspectra for winter wheat |
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| Guo Jianmao,Wang Qian,Tong Yingxiang,Fei Dunyue and Liu Junwei.Effect of solar radiation intensity and observation angle on canopy reflectance hyperspectra for winter wheat[J].Transactions of the Chinese Society of Agricultural Engineering,2016,32(10):157-163. |
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| Authors: | Guo Jianmao Wang Qian Tong Yingxiang Fei Dunyue and Liu Junwei |
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| Institution: | Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters / Jiangsu Key Laboratory of Agricultural Meteorology / College of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China,Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters / Jiangsu Key Laboratory of Agricultural Meteorology / College of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China,Shou Meteorological Office of Anhui Province, Shouxian 232200, China,Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters / Jiangsu Key Laboratory of Agricultural Meteorology / College of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China and Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters / Jiangsu Key Laboratory of Agricultural Meteorology / College of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China |
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| Abstract: | |
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| Keywords: | crops spectrum analysis reflection canopy wheat NDVI EVI |
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