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首页> 外文会议>Remote sensing for agriculture, ecosystems, and hydrology XIX >Estimation of Winter Wheat Canopy Nitrogen Density at Different Growth Stages Based on Multi-LUT Approach
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Estimation of Winter Wheat Canopy Nitrogen Density at Different Growth Stages Based on Multi-LUT Approach

机译：基于Multi-LUT方法的冬小麦冠层氮素密度估算

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摘要

Rapid real-time monitoring of wheat nitrogen (N) status is crucial for precision N management during wheat growth. In this study, Multi Lookup Table (Multi-LUT) approach based on the N-PROSAIL model parameters setting at different growth stages was constructed to estimating canopy N density (CND) in winter wheat. The results showed that the estimated CND was in line with measured CND, with the determination coefficient (R~2) and the corresponding root mean square error (RMSE) values of 0.80 and 1.16 g m~(-2), respectively. Time-consuming of one sample estimation was only 0.6 ms under the test machine with CPU configuration of Intel(R) Core(TM) i5-2430 @2.40GHz quad-core. These results confirmed the potential of using Multi-LUT approach for CND retrieval in winter wheat at different growth stages and under variables climatic conditions.
机译：快速实时监测小麦氮（N）状态对于小麦生长过程中精确的氮管理至关重要。在这项研究中，构建了基于不同生育阶段的N-PROSAIL模型参数设置的多查询表（Multi-LUT）方法，以估算冬小麦的冠层N密度（CND）。结果表明，估计的CND与测得的CND一致，测定系数（R〜2）和相应的均方根误差（RMSE）值分别为0.80和1.16 g m〜（-2）。在采用Intel®Core™i5-2430 @ 2.40GHz四核CPU配置的测试机下，一个样本估计的耗时仅为0.6 ms。这些结果证实了使用Multi-LUT方法在冬小麦不同生长阶段和气候条件不同的情况下进行CND检索的潜力。

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  • 来源
  • 会议地点 Warsaw(PL)
  • 作者

    Zhenhai Li; Na Li; Zhenhong Li; Jianwen Wang; Chang Liu;

  • 作者单位

    School of Civil Engineering and Geosciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK,National Engineering Research Center for Information Technology in Agriculture (NERCITA), Beijing 100097, P.R. China;

    School of Civil Engineering and Geosciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK,Key Laboratory of Precision Opto-Mechatronics Technology, Ministry of Education, Beijing University of Aeronautics and Astronautics, Beijing, China;

    School of Civil Engineering and Geosciences, Newcastle University, Newcastle upon Tyne NE1 7RU, UK;

    National Engineering Research Center for Information Technology in Agriculture (NERCITA), Beijing 100097, P.R. China;

    National Engineering Research Center for Information Technology in Agriculture (NERCITA), Beijing 100097, P.R. China;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Winter wheat; canopy nitrogen density; Lookup table; N-PROSAIL; Hyperspectral;

    机译：冬小麦；冠层氮密度查找表; N-PROSAIL；高光谱;

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