Remote sensing-based global crop monitoring: experiences with China’s CropWatch system

查看全文 作　　者：Bingfang [1]Wu;Jihua [1]Meng;Qiangzi [1]Li;Nana [1]Yan;Xin [1]Du;Miao [1]Zhang

机构地区：[1]Institute of Remote Sensing and Digital Earth,Chinese Academy of Sciences,Beijing,China

出　　处：《International Journal of Digital Earth》索引2014年第7卷第2期,共25页

基　　金：The development of CropWatch and its operation was supported by grants from Major Programs of the Chinese Academy of Sciences during the 9th Five-Year Plan period(KZ951-A1-302-02[19982000]);the Key Program of the Chinese Academy of Sciences(KZ95T-03-02[19982000]);the Knowledge Innovation Programs of the Chinese Academy of Sciences(KZCX2-313[20002002],KZCX3-SW-338-2[20032007],KSCX1-YW-09-01[20082010]);the National Key Technologies Research and Development Program of China during the 10th Five-Year Plan Period(2001BA513B02[20012003]);the National High-Tech Research and Development Program of China(2003AA131050[20032005],2012AA12A307[20122014],2013AA12A302[20132015]);the National Extension Program for Main Achievements(KJSX0504[20052007]);the Conversion Program for Technical Achievements in Agriculture(GQ050006[20052007])by the Ministry of Science and Technology of China. 摘　　要：Monitoring the production of main agricultural crops is important to predict and prepare for disruptions in food supply and fluctuations in global crop market prices.China’s global crop-monitoring system(CropWatch)uses remote sensing data combined with selected field data to determine key crop production indicators:crop acreage,yield and production,crop condition,cropping intensity,crop-planting proportion,total food availability,and the status and severity of droughts.Results are combined to analyze the balance between supply and demand for various food crops and if needed provide early warning about possible food shortages.CropWatch data processing is highly automated and the resulting products provide new kinds of inputs for food security assessments.This paper presents a comprehensive overview of CropWatch as a remote sensingbased system,describing its structure,components,and monitoring approaches.The paper also presents examples of monitoring results and discusses the strengths and limitations of the CropWatch approach,as well as a comparison with other global crop-monitoring systems. 关键词：CropWatch crop monitoring remote sensing crop production

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Remote sensing-based global crop monitoring: experiences with China’s CropWatch system

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