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Extraction of Maize Distribution Information Based on Critical Fertility Periods and Active–Passive Remote Sensing

Author

Listed:
  • Xiaoran Lv

    (Key Laboratory of Spatio-Temporal Information and Ecological Restoration of Mines of Natural Resources of the People’s Republic of China, Henan Polytechnic University, Jiaozuo 454003, China)

  • Xiangjun Zhang

    (Henan Remote Sensing and Mapping Institute, Zhengzhou 450003, China)

  • Haikun Yu

    (Henan Remote Sensing and Mapping Institute, Zhengzhou 450003, China)

  • Xiaoping Lu

    (Key Laboratory of Spatio-Temporal Information and Ecological Restoration of Mines of Natural Resources of the People’s Republic of China, Henan Polytechnic University, Jiaozuo 454003, China)

  • Junli Zhou

    (Henan Remote Sensing and Mapping Institute, Zhengzhou 450003, China)

  • Junbiao Feng

    (Key Laboratory of Spatio-Temporal Information and Ecological Restoration of Mines of Natural Resources of the People’s Republic of China, Henan Polytechnic University, Jiaozuo 454003, China)

  • Hang Su

    (Henan Remote Sensing and Mapping Institute, Zhengzhou 450003, China)

Abstract

This study proposes a new method for integrating active and passive remote sensing data during critical reproductive periods in order to extract maize areas early and to address the problem of low accuracy in the classification of maize-growing areas affected by climate change. Focusing on Jiaozuo City, this study utilized active–passive remote sensing images to determine the optimal time for maize identification. The relative importance of features was assessed using a feature selection method combined with a machine learning algorithm, the impact of both single-source and multi-source features on accuracy was analyzed to generate the optimal feature subset, and the classification accuracies of different machine learning classification methods for maize at the tasseling stage were compared. Ultimately, this study identified the most effective remote sensing features and methods for maize detection during the optimal fertility period. The experimental results show that the feature set optimized for the tasseling stage significantly enhanced maize recognition accuracy. Specifically, the random forest (RF) method, when applied to the multi-source data fusion feature set, yielded the highest accuracy, improving classification accuracy by 24.6% and 4.86% over single-source features, and achieving an overall accuracy of 93.38% with a Kappa coefficient of 0.91. Data on the study area’s maize area were also extracted for the years 2018–2022, with accuracy values of 93.83%, 98.77%, 97%, and 98.05%, respectively.

Suggested Citation

  • Xiaoran Lv & Xiangjun Zhang & Haikun Yu & Xiaoping Lu & Junli Zhou & Junbiao Feng & Hang Su, 2024. "Extraction of Maize Distribution Information Based on Critical Fertility Periods and Active–Passive Remote Sensing," Sustainability, MDPI, vol. 16(19), pages 1-21, September.
  • Handle: RePEc:gam:jsusta:v:16:y:2024:i:19:p:8373-:d:1486352
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    Cited by:

    1. Luying Liu & Jingyi Yang & Fang Yin & Linsen He, 2025. "High-Resolution Mapping of Maize in Mountainous Terrain Using Machine Learning and Multi-Source Remote Sensing Data," Land, MDPI, vol. 14(2), pages 1-21, January.

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