摘要
基于2001~2019年MODIS NDVI数据,利用动态阈值植被物候信息遥感提取方法,提取了近20a来黄河流域植被物候信息,并对植被物候信息空间分布进行了分析。结果表明:黄河流域植被SOS主要集中在第100-160天,EOS主要集中在第270-310天,LOS时间跨度较长,大部分集中在110-200天。植被多年平均生长开始日期呈由东南向西北逐渐推迟的空间分布格局,而EOS的空间分布格局则基本与其相反。
Based on MODIS NDVI data from 2001 to 2019,the vegetation phenology information of the Yellow River Basin in recent 20 years was extracted by using the dynamic threshold method,and the spatial distribution of it was analyzed.The results show that,The SOS of vegetation in the Yellow River Basin is mainly concentrated in the 100th-160th day,the EOS is mainly concentrated in the 270th-310th day,and the LOS span a bigger long time,about 110-200 days.The start date of multi-year average growth of vegetation shows a spatial distribution pattern gradually delayed from southeast to northwest,while the spatial distribution pattern of EOS is basically opposite.
出处
《科学技术创新》
2021年第31期1-4,共4页
Scientific and Technological Innovation
基金
2020年度河南省高等学校大学生创新训练计划项目(202012949012)
郑州师范学院博士启动资金项目。
关键词
NDVI
植被物候
动态阈值法
空间分布
黄河流域
NDVI
Vegetation phenology
Dynamic threshold method
Spatial distribution
Yellow River Basin
