A study of information extraction of rape and winter wheat planting in Jianghan Plain based on MODIS EVI
YANG Huan1(), DENG Fan1, ZHANG Jiahua2(), WANG xueting1, MA Qingxiao1, XU Nuo1
1. School of Geosciences, Yangtze University, Wuhan 430100, China 2. Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China
Two crops with similar growth periods are likely to be confused during remote sensing recognition,which brings difficulties to crop identification and area extraction. For the purpose of solving this problem,Jianghan Plain was used as the study area and,according to the MODIS EVI timing curve of different features in combination with the spectral characteristics of the objects themselves and the phenological information of crops,the combination of decision tree and quadratic difference method was used to extract the planting area of rape and winter wheat in Jianghan Plain in 2010. The results showed that, compared with the statistical data,the overall accuracy of remote sensing extraction of rape and winter wheat planting area in the study area was 93.7% and 87.1%,respectively, and that, at the city (county, district) level,the correlation coefficient R2 between calculated data and statistical data is 0.88,and the winter wheat is 0.90. This study can accurately identify rape and winter wheat with similar growth periods so as to obtain better results of planting area extraction,which has certain universality and can provide technical support for monitoring and estimating yield of rape and winter wheat in Jianghan Plain.
杨欢, 邓帆, 张佳华, 王雪婷, 马庆晓, 许诺. 基于MODIS EVI的江汉平原油菜和冬小麦种植信息提取研究[J]. 国土资源遥感, 2020, 32(3): 208-215.
YANG Huan, DENG Fan, ZHANG Jiahua, WANG xueting, MA Qingxiao, XU Nuo. A study of information extraction of rape and winter wheat planting in Jianghan Plain based on MODIS EVI. Remote Sensing for Land & Resources, 2020, 32(3): 208-215.
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2020, Vol. 32 
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