VIIRS-TVDI法反演干旱区农田土壤湿度
发布时间：2018-09-19 14:14
【摘要】：在国内首次使用MODIS/AVHRR的后继VIIRS产品,依其每日地表反射率产品(GIGTO-VI1~5BO)计算NDVI,结合每日陆表温度产品(GMTCO-VLSTO),计算新疆农七师125团2015年6月29日~7月10日的TVDI结果,利用同期地面实测土壤含水率进行验证,R~2=0.846,两者之间不相关的双尾检验值0.001。结果表明,构建的土壤湿度模型对农田土壤含水率有较好的反应,并将该模型推广到全天山北坡经济带地区。利用VIIRS数据构建的TVDI特征空间表现优秀,拟合结果良好;该数据因其自身幅宽、高时间分辨率等优势,应用于新疆农田土壤湿度监测,具有一定优势,可弥补VIIRS产品在我国该领域使用的空白。
[Abstract]:The following VIIRS products of MODIS/AVHRR were used for the first time in China. According to the daily surface reflectivity products (GIGTO-VI1~5BO) and the daily surface temperature products (GMTCO-VLSTO), the TVDI results of the 125th regiment of the 7th Agricultural Division of Xinjiang from June 29 to July 10, 2015 were calculated. The soil moisture content measured on the ground at the same time was used to verify the soil moisture content, and the uncorrelated double tail test value was 0.001. The results showed that the model of soil moisture had a good response to the soil moisture content of farmland, and the model was extended to the economic zone on the northern slope of Tianshan Mountain. The TVDI feature space constructed by VIIRS data shows excellent performance and the fitting result is good. Because of its advantages of width and high temporal resolution, the data is applied to monitoring soil moisture in Xinjiang farmland, which has some advantages. Can make up for VIIRS products in our country in this field of use of the blank.
【作者单位】： 山东农业大学信息学院;中国科学院遥感与数字研究所;新疆应用职业技术学院;
【基金】：科技支疆计划项目(2014AB001) 农业部公益性行业(农业)科研专项(201503219-3)
【分类号】：S152.71
，
本文编号：2250367
[Abstract]:The following VIIRS products of MODIS/AVHRR were used for the first time in China. According to the daily surface reflectivity products (GIGTO-VI1~5BO) and the daily surface temperature products (GMTCO-VLSTO), the TVDI results of the 125th regiment of the 7th Agricultural Division of Xinjiang from June 29 to July 10, 2015 were calculated. The soil moisture content measured on the ground at the same time was used to verify the soil moisture content, and the uncorrelated double tail test value was 0.001. The results showed that the model of soil moisture had a good response to the soil moisture content of farmland, and the model was extended to the economic zone on the northern slope of Tianshan Mountain. The TVDI feature space constructed by VIIRS data shows excellent performance and the fitting result is good. Because of its advantages of width and high temporal resolution, the data is applied to monitoring soil moisture in Xinjiang farmland, which has some advantages. Can make up for VIIRS products in our country in this field of use of the blank.
【作者单位】： 山东农业大学信息学院;中国科学院遥感与数字研究所;新疆应用职业技术学院;
【基金】：科技支疆计划项目(2014AB001) 农业部公益性行业(农业)科研专项(201503219-3)
【分类号】：S152.71
，
本文编号：2250367
本文链接：https://www.wllwen.com/kejilunwen/nykj/2250367.html
