摘要
以黄淮海为研究区,基于MODIS EVI植被指数遥感数据,利用Logistic模型对夏玉米关键物候期(苗期、拔节期、抽雄期、成熟期)进行了监测。使用地面物候观测数据对监测结果加以检验,并与其他常见的遥感监测模型进行了比较。结果表明:研究监测结果总体误差小于±6天,误差较大的区域多出现在地势较高,种植结构较复杂的地区。研究结果可为进行全球气候变化研究提供依据。
Crop phenology is a symbol to indicate the crop growth status. Phenology data has a direct impact on yields,and its change shows the response between the biosphere and climate change. This paper took Huang-Huai-Hai as the study area, and monitors the phenology of summer maize （seeding stage,jointing, tasseling and maturity） based on MODIS EVI data using Logistics model. The monitored result was examined by the ground observation data. The results show that the overall error is less than ±6d. The lower accuracy appears in the areas which is high terrain or has complex planting structure. The research re- suds can provide the basis for the study of global climate change.
出处
《遥感信息》
CSCD
2013年第3期85-90,共6页
Remote Sensing Information
基金
全球变化研究国家重大科学研究计划项目(2010CB951503)
