GEE支持下的河南省冬小麦面积提取及长势监测
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周珂,柳乐,张俨娜,苗茹,杨阳
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Area Extraction and Growth Monitoring of Winter Wheat in Henan Province Supported by Google Earth Engine
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ZHOU Ke,LIU Le,ZHANG YanNa,MIAO Ru,YANG Yang
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表4 河南省冬小麦遥感提取的播种面积与统计的播种面积比较
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Table 4 Comparison of sown area extracted by remote sensing and statistical sown area
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特征
Feature | 年份
Year | 提取面积
Extraction area (hm2) | 统计面积
Statistical area (hm2) | 绝对误差
Absolute error (hm2) | 相对误差
Relative error (%) | 光谱+地形+纹理+NDVI
Spectrum + terrain + texture + NDVI | 2017-2018 | 5930815 | 5714640 | 216175 | 3.78 | | 2018-2019 | 6043211 | 5739850 | 303361 | 5.28 | 光谱+地形+纹理+NDVI+NDVI增幅
Spectrum+topography+texture+NDVI+ NDVIincrease | 2017-2018 | 5548529 | 5714640 | 166111 | 2.91 | | 2018-2019 | 5604970 | 5739850 | 134670 | 2.35 | | 2019-2020 | 5843632 | | | |
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