基于MODIS NDVI的春小麦苗期长势监测——以呼伦贝尔市大兴安岭西麓为例

Growth Monitoring for Spring Wheat during Seeding Stage Based on MODIS NDVI Data—A Case Study of Daxing'anling Western Slope in Hulun Buir

以大兴安岭西麓的拉布达林农场、谢尔塔拉农场、莫拐农场以及呼伦贝尔市华和有限责任公司的农场为研究区域,利用Landsat8OLI影像和时间序列MODIS NDVI数据,结合GPS野外定位技术,对各大农场2015的春小麦进行了苗期长势监测初探。结果表明:研究区南部的春小麦长势最好,其次为中部的谢尔塔拉农场及东部的莫拐农场,最差为北部拉布达林农场。从总体来看,MODIS NDVI数据能很好地反映大兴安岭西麓春小麦长势状况,为该区域田间管理和早期估产提供及时信息和理论依据。

The Labudalin farm, Xieertala farm, Moguai farm and the farm of Huahe Limited Liability Company, Hulunbeier were selected as study regions. Using Landsat8 OLI image and time series MODIS NDVI data, combined with technology of global positioning system, a prelimina- ry study was conducted on the growth monitoring of spring wheat at seedling stage in farm. The results showed that the growth of spring wheat in southern areas was best and then followed by Xieertala farm and Moguai farm which were located in central sections and eastern part respectively. The worst was Labudalin farm in northern part. Overall, MODIS NDVI data could reflect the growing status of spring wheat in Daxing＇ anling western slope very well. It would provide information for field management in time and theoretical basis for early yield estimation for these areas.