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中国农学通报 ›› 2016, Vol. 32 ›› Issue (23): 100-105.doi: 10.11924/j.issn.1000-6850.casb16010103

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

FY3-B/MWRI土壤湿度产品在藏北的适用性研究

袁雷,周刊社,马鹏飞   

  1. 西藏自治区气候中心,西藏自治区气候中心,西藏自治区气候中心
  • 收稿日期:2016-01-21 修回日期:2016-03-15 接受日期:2016-03-24 出版日期:2016-08-10 发布日期:2016-08-10
  • 通讯作者: 袁雷
  • 基金资助:
    西藏自治区气象局科技创新团队基金项目“科技创新团队”(XZQX201502)。

Applicability of FY-3B/MWRI Soil Moisture Products in Northern Tibet

  • Received:2016-01-21 Revised:2016-03-15 Accepted:2016-03-24 Online:2016-08-10 Published:2016-08-10

摘要: 藏北草原地广人稀,遥感监测土壤湿度在这一地区有广阔的前景。利用2014年7月28日-2015年8月1日野外试验数据对FY-3B/MWRI土壤湿度产品进行验证,结果表明:秋季实测土壤湿度平均值与MWRI反演平均值最为接近,仅相差0.002 cm3/cm3。实测土壤湿度和MWRI反演土壤湿度两者的均方根误差在春季为0.067,而两者的相关性在春季和秋季最好,R2分别达到了0.4337和0.3444,在春、秋两季完全可以用FY-3B/MWRI土壤湿度产品监测藏北高原土壤湿度。

关键词: FTIR, FTIR, 根茎类作物, 小波变换, 主成分分析, 聚类分析

Abstract: Northern Tibet grassland is a sparsely-populated area, remote sensing monitoring soil moisture has broad prospects in this region. This paper utilized filed experiment data to verify FY-3B/MWRI soil moisture product in northern Tibet grassland. The results showed that the average soil moisture and MWRI inversion mean were the closest in autumn, there was only a difference of 0.002 cm3/cm3. The RMSE of measured soil moisture and soil moisture retried from MWRI was 0.067 in spring, the correlation was the best in spring and autumn, with the R2 of 0.4337 and 0.3444. FY-3B/MWRI soil moisture product could be used to monitor soil moisture in northern Tibetan Plateau in spring and autumn.