| 摘要: |
| SPAD能够反映植株叶绿素含量，而植株叶绿素的含量及动态变化，对评价作物生产能力、预测 产量和品质均有重要意义。该研究以湖北省潜江市后湖管理区冬小麦为研究对象，通过田间观测不同生育 期冬小麦叶片SPAD变化情况，结合我国自主研发的HJ-1卫星对研究区域进行同步监测，选取并计算RVI、 DVI、NDVI、GRVI四种植被指数，通过对4种植被指数与冬小麦叶片SPAD进行相关性分析，并构建植被 指数与冬小麦叶片SPAD回归反演模型，结果显示相关性均较高。通过对比四种植被指数模型反演精度， NDVI-SPAD对数模型预测精度较高，精度检验表明平均相对误差为-2.34，均方根误差（RMSE）为5.65， 能够较好的反演研究区域内的冬小麦SPAD。利用HJ-1卫星结合NDVI-SPAD对数模型能够有效对研究区域 冬小麦叶片SPAD进行遥感监测。 |
| 关键词: HJ-1卫星 冬小麦 SPAD 监测 |
| DOI：10.7621/cjarrp.1005-9121.20120608 |
| 分类号: |
| 基金项目:国家自然科学基金项目（40971218）、全球变化研究国家重大科学研究计划项目（2010CB951504）、农业部农业科研杰出人 才基金项目、农业部农业信息技术重点实验室开放课题（2011002）、中央级公益性科研院所专项资金项目（IARRP-2012-29） |
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| MONITORING WINTER WHEAT SPAD BASED ON HJ -1 CCD |
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Xia Tian1, Zhou Qingbo1, Chen Zhongxin1, Zhou Yong2, Yu Lei2
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1.Key Laboratory of Agri-Informatics， Ministry of Agriculture， Beijing 100081/Institute of Agricultural Resources and Regional Planning， Chinese Academy of Agricultural Sciences， Beijing 100081;2.College of Urban and Environment Sciences， Huazhong Normal University， Hubei Wuhan 430079
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| Abstract: |
| The plant chlorophyll content and the dynamic change， which can be reflected by SPAD， have impor- tant significance in evaluating crop production capacity and predicting crop yields and quality. Taking the winter wheat in Hou Lake Management District， Qianjiang City， Hubei province as the study object， through field obser- vation in different growth period of winter wheat leaves of SPAD change situation， this paper combined with syn- chronous monitoring using the HJ-1 satellite independently developed by China， chose and calculated the RVI， DVI， NDVI， GRVI four vegetation index. Through the correlation analysis between the 4 vegetation index and leaf of winter wheat SPAD， the regression model of vegetation index and leaf of winter wheat SPAD（i.e.， NDVI- SPAD） was constructed. The NDVI-SPAD logarithm model was tested for the accuracy， the average relative error was 2.34 with the root mean square error（RMSE） of 5.65. The results showed that the NDVI-SPAD logarithm model had high prediction accuracy which can better inverted the SPAD of winter wheat. It concluded that using HJ-1 satellite combining NDVI-SPAD logarithmic model can effectively monitored the winter wheat leaves of SPAD in the study area. |
| Key words: HJ-1 satellite winter wheat SPAD monitoring |
