湖北农业科学 ›› 2024, Vol. 63 ›› Issue (8): 194-200.doi: 10.14088/j.cnki.issn0439-8114.2024.08.033

• 遥感技术 • 上一篇    下一篇

基于Sentinel-2数据提取江汉平原虾稻田分布方法

王静1,2,3, 万君1,2,3, 邓环环1,2,3   

  1. 1.武汉区域气候中心,武汉 430074;
    2.三峡国家气候观象台,湖北 宜昌 443002;
    3.中国气象局流域强降水重点开放实验室,武汉 430205
  • 收稿日期:2023-09-18 出版日期:2024-08-25 发布日期:2024-09-05
  • 通讯作者: 万 君(1981-),女,湖北武汉人,高级工程师,硕士,主要从事农作物遥感研究,(电话)027-67847968(电子信箱)5343491@qq.com。
  • 作者简介:王 静(1996-),女,山西吕梁人,助理工程师,硕士,主要从事农作物遥感研究,(电话)15307198894(电子信箱)921044049@qq.com。
  • 基金资助:
    湖北省气象局年轻科技人员基金项目(2023Q06); 湖北省气象局基金项目(2022Z03; 2022Z05-04); 湖北省气象局面上基金项目(2023Y05)

The method of extracting rice-crayfish paddy fields distribution in the Jianghan Plain based on Sentinel-2 data

WANG Jing1,2,3, WAN Jun1,2,3, DENG Huan-huan1,2,3   

  1. 1. Wuhan Regional Climate Center, Wuhan 430074, China;
    2. Three Gorges National Climatological Observatory, Yichang 443002, Hubei, China;
    3. China Meteorological Administration Basin Heavy Rainfall Key Laboratory, Wuhan 430205, China
  • Received:2023-09-18 Published:2024-08-25 Online:2024-09-05

摘要: 以江汉平原为研究区,基于AI Earth阿里云平台提供的Sentinel-2 MSI L2数据,在实地采样样本和目视解译样本的基础上,通过分析遥感影像中虾稻田的时序变化规律,总结出区分虾稻田与其他地物类型的关键时间以及指数阈值,从而构建虾稻田提取的决策树模型,最终提取出江汉平原2022—2023年虾稻田的空间分布。最后,基于样本数据评估了该方法的精度,总体精度达93.25%,Kappa系数为0.842 9,结果表明该方法具有较好的提取结果。

关键词: 多时相遥感影像, Sentinel-2, 虾稻田, 决策树, 江汉平原

Abstract: Taking the Jianghan Plain as the study area, and based on the Sentinel-2 MSI L2 data provided by AI Earth cloud platform, on the basis of field sampling samples and visually interpreted samples, the critical time and index threshold to distinguish rice-crayfish paddy fields from other ground types were summarized by analyzing the temporal change of rice-crayfish paddy fields in remote sensing images, so as to construct a decision tree model for rice-crayfish paddy fields extraction. Finally, the spatial distribution of rice-crayfish paddy fields in the Jianghan Plain from 2022 to 2023 was extracted. Finally, the accuracy of the method was evaluated based on the sample data, and the overall accuracy reached 93.25% with Kappa coefficient of 0.842 9, which showed that the method had better extraction results.

Key words: multi-temporal remote sensing, Sentinel-2, rice-crayfish paddy field, decision tree, Jianghan Plain

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