Research Papers

County-level rice area estimation in southern China using remote sensing data

[+] Author Affiliations
Qiangzi Li

Chinese Academy of Sciences, Institute of Remote Sensing and Digital Earth, State Key Laboratory of Remote Sensing Science, and National Engineering Research Center for Geoinformatics, Beijing 100101, China

Huanxue Zhang

Chinese Academy of Sciences, Institute of Remote Sensing and Digital Earth, State Key Laboratory of Remote Sensing Science, and National Engineering Research Center for Geoinformatics, Beijing 100101, China

Xin Du

Chinese Academy of Sciences, Institute of Remote Sensing and Digital Earth, State Key Laboratory of Remote Sensing Science, and National Engineering Research Center for Geoinformatics, Beijing 100101, China

Ning Wen

Hunan Research Academy of Geological Sciences, Changsha 410007, China

Hunan Planning Institute of Land and Resources, Changsha 410007, China

Qingshan Tao

Hunan Research Academy of Geological Sciences, Changsha 410007, China

Hunan Planning Institute of Land and Resources, Changsha 410007, China

J. Appl. Remote Sens. 8(1), 083657 (Mar 26, 2014). doi:10.1117/1.JRS.8.083657
History: Received December 9, 2013; Revised February 18, 2014; Accepted February 25, 2014
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Abstract.  Rice acreage estimation is a key aspect of assessing rice production. A method of estimating rice acreage at the county level is explored, using data from the HJ-1A/B Chinese Environmental Satellite for Hunan Province, which has complex rice cropping patterns. The method combines supervised and unsupervised classification using a mixed-pixel decomposition model. The rice acreage estimation results were validated by interpretation of RapidEye images for early-season rice and ground survey data for medium-season and late-season rice. The results showed a good correlation between the estimates derived from RapidEye and from HJ CCD data for pure rice pixels (R2=0.99, 0.99, and 0.97 for early-, medium-, and late-season rice). The discrepancy was <10% at the plot level (6.5×6.5km) for early-season rice, while it was 12.20 and 12.36% at the plot level (1×1km) for medium-season and late-season rice. These results suggested that the method proposed in this study is capable of rice acreage estimation at the county level. The method can also be used in mountainous regions and areas of fragmented planting.

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Citation

Qiangzi Li ; Huanxue Zhang ; Xin Du ; Ning Wen and Qingshan Tao
"County-level rice area estimation in southern China using remote sensing data", J. Appl. Remote Sens. 8(1), 083657 (Mar 26, 2014). ; http://dx.doi.org/10.1117/1.JRS.8.083657


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