<FONT face="Verdana">Estimating Rice Yield by HJ-1A Satellite Images </FONT>

LI Wei-guo, LI Hua,

doi:10.3969/j.issn.1001-7216.2010.04.009

Chinese Journal OF Rice Science >

2010 , Vol. 24 >Issue 4: 385 - 390

DOI: https://doi.org/10.3969/j.issn.1001-7216.2010.04.009

研究报告

Estimating Rice Yield by HJ-1A Satellite Images

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¹Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; ²College of Agriculture, Anhui Agricultural University, Hefei 230036, China

Received date: 1900-01-01

Revised date: 1900-01-01

Online published: 2010-07-10

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Abstract

With Xuyi County, Jinhu County and Hongze County in Jiangsu Province, China as examples, monitoring and forecasting of rice production were carried out by using HJ1A satellite remote sensing images. The handhold GPS machines were used to measure the geographical position and some other information of these samples such as areas shapes. The GPS data and the interpretation mark were used to correct HJ1 image, assist humancomputer interactive interpretation, and other operations. The test data had been participated in the whole classification process. The accuracy of interpreted information on rice planting area was more than 90%. By using the leaf area index got from the normalized difference vegetation index inversion, and the biomass got from the ratio vegetation index inversion, combined with the rice yield estimation model, the rice yield was estimated. Further the thematic map of rice production classification was made based on the rice yield data. According to the comparison results between measured and fitted values of the yields and areas of sample sites, the accuracy of the yield estimation was more than 85%. The results suggest that HJ1A/B images could basically meet the demand of rice growth monitoring and yield forecasting, and could be widely applied to rice production monitoring.

Key words： rice; yield; satellite remote sensing images; estimation model

Cite this article

LI Wei-guo, LI Hua, . Estimating Rice Yield by HJ-1A Satellite Images [J]. Chinese Journal OF Rice Science, 2010 , 24(4) : 385 -390 . DOI: 10.3969/j.issn.1001-7216.2010.04.009

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