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The Model of Wheat Yield Forecast Based on Modis-ndvi – a Case Study of Xinxiang : Volume I-7, Issue 1 (16/07/2012)

By Zhang, H.

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Book Id: WPLBN0004013700
Format Type: PDF Article :
File Size: Pages 4
Reproduction Date: 2015

Title: The Model of Wheat Yield Forecast Based on Modis-ndvi – a Case Study of Xinxiang : Volume I-7, Issue 1 (16/07/2012)  
Author: Zhang, H.
Volume: Vol. I-7, Issue 1
Language: English
Subject: Science, Isprs, Annals
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Zhou, G., Chen, H., & Zhang, H. (2012). The Model of Wheat Yield Forecast Based on Modis-ndvi – a Case Study of Xinxiang : Volume I-7, Issue 1 (16/07/2012). Retrieved from

Description: CMA/ Henan Key Laboratory of Agro-meteorological Safeguard and Applied Technique, Zhengzhou 450003, China. The yield estimation models on a regional scale are generally constrained by the lack of spatially distributed information on major environmental. The utilization of remote sensing data with various spatial and temporal resolutions can settle this problem. The NDVI, which retrieved from satellite remote sensing, was adopted to forecast winter wheat yields in this paper. There are two key steps in the process of calculating. The first is the establishment of the relationship between NDVI and Above Ground Biomass (AGB). The second is the Harvest Index(HI) calculating based on the change of NDVI from the period of re-greening to maturity. The validation results showed that forecast accuracy is satisfied and can be applied in practice of winter wheat yield forecasting. However, the error will be increased in abnormal weather condition, for higher or lower value of NDVI is made than normal situation, (such as re-greening too early, overgrowth, and late-maturing, etc.). So the model amendment is required according to the status of crop and weather condition in the year.



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