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| 基于MODIS数据光谱突变法提取冬小麦种植面积研究 | |
| 引用本文： | 王云峰,沈润平,田国珍.基于MODIS数据光谱突变法提取冬小麦种植面积研究[J].内蒙古气象,2009(6):18-21. |
| 作者姓名： | 王云峰 沈润平 田国珍 |
| 作者单位： | 1. 南京信息工程大学遥感学院,江苏,南京,210044;山西省气候中心,山西,太原,030002 2. 南京信息工程大学遥感学院,江苏,南京,210044 3. 山西省气候中心,山西,太原,030002 |
| 摘 要： | 利用2004—2005年MODIS 16天合成的NDVI最大值植被指数数据,基于NDVI光谱突变方法对山西省运城地区冬小麦种植面积提取。冬小麦有两个生育阶段其绿度—时相曲线与其他大宗作物、植被有明显差异：一是10—11月,为冬小麦秋播至分蘖阶段;二是5—6月,为冬小麦孕穗至收获期。通过分析得出：2005年5—6月（2005161～2005129）提取的冬小麦面积与实测面积相关性最高,估测的冬小麦面积与实测面积的误差最小,准确性最高。 |
| 关 键 词： | MODIS 种植面积 作物估产 光谱突变 |
Study on Extracting Winter Wheat Planting Area Based on MODIS Data by Spectral Mutation |
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| Authors: | Wang Yunfeng Shen Runping Tian Guozhen |
| Institution: | 1. College of Remote Sensing,Nanjing Information Science ＆ Technology University, Nanjing 210044; 2. Shanxi Climate Centre, Taiyuan 030002) |
| Abstract: | Using the maximum NDVI data from 16 daily MODIS data from 2004 to 2005 and based on NDVI spectral mutation methods,the winter wheat planting area in Yuncheng in Shanxi Province were extracted.There are significant differences on green degree-phase curve between winter wheat and other crops and vegetation in two reproductive stages.First is October to November,it is the autumn sowing to tiller stage of winter wheat.Another is May to June for the winter wheat booting to harvest stage.Through the analysis it obtained： There was the highest relativity between the extracting and surveying area of winter wheat from May to June of 2005（2005161～2005129）.There were minimum error between the estimating and surveying area of winter wheat.The accuracy is the highest during this period. |
| Keywords: | MODIS |
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