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- W2068683172 abstract "From October of 2008 to February 2009, persistent drought weather hit most parts of northern China. The vegetationcondition reflects the overall effect of rainfall, soil moisture, weather and agricultural practices. The remote sensingtechnique plays an important role in drought monitoring and early warning. In this article the author proposes a LAIanomaly index based on the MODIS 15A Products to monitor drought and predict yield. The historical average LeafArea Index (LAI) images were derived using MODIS 15A Products from 2001 to 2007. The departure method wasemployed to calculate the anomaly index of LAI. And the LAI anomaly images were calculated from the MODIS 15ALAI products in spring, 2009. The LAI anomaly index was also designed to assess the drought degree. The springdrought index images in the 7 winter wheat provinces, including Heibei, He'nan, Shandong, Shan xi, Shan'xi, Anhui,Jiangsu, were mapped. The results showed that the spring drought was fiercely extended in the January along with therapid rise of temperature and the regreening of winter crops, and also indicated the worst drought occurred in Henanprovince, Southwest Shandong, Guanzhong plateau in Shaanxi province, South Shanxi, North Jiangsu, North Anhui.However, the severe drought was also alleviated rapidly by the intensive and timely irrigation and the adequate rainfallfrom February to May, 2009. And the winter crops were successfully recovered since end of March (DOY 81) in most ofthe wheat product region. The predicted yield in most winter wheat product region was normal or better than normallevel, and the spring drought resulted in small or bigger yield loss in some fields in south Shanxi, west Hebei, south-eastHenan and Guangzhong Plateau Shaanxi." @default.
- W2068683172 created "2016-06-24" @default.
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- W2068683172 date "2009-09-26" @default.
- W2068683172 modified "2023-10-16" @default.
- W2068683172 title "Monitoring Chinese spring drought using time-series MODIS data" @default.
- W2068683172 doi "https://doi.org/10.1117/12.873280" @default.
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