基于Terra-MODIS和NOAA-AVHRR数据的条件植被温度指数干旱监测及其对比分析  

Comparison study on VTCI drought monitoring results using Terra-MODIS and NOAA-AVHRR data

作　　者：李慧[1] 王鹏新[1] 

机构地区：[1]中国农业大学信息与电气工程学院,北京100083

出　　处：《干旱区资源与环境》2013年第3期61-66,共6页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金项目(41071235;40871159);国家科技支撑计划课题(2012BAH29B03);高等学校博士学科点专项科研基金项目(20100008110031)资助

摘　　要：以陕西省关中平原为研究区域,选取2000-2009年每年4月上、中、下旬和5月上旬Terra-MO-DIS和NOAA-AVHRR遥感数据,应用条件植被温度指数(VTCI)方法,探究在两种遥感数据源、相同时间尺度下VTCI干旱监测结果的特点和可比性。通过对比分析多年同一旬的VTCI结果发现,两种数据的监测结果反映出的旱情分布规律相同,并且符合实际的干旱情况。尽管两种遥感数据在过境时间、波段数等方面均有所不同,但是两种数据的VTCI结果散点分布呈现出明显的线性相关关系,说明两种数据得到的VTCI干旱监测结果是具有可比性的。Based on the Terra-MODIS and NOAA-AVHRR remotely sensed data from April to the early of May in the years from 2000 to 2009 in the Guanzhong Plain of Shaanxi province,this study focuses on the features and comparability of the drought monitoring results by employing the vegetation temperature condition index（VTCI） drought monitoring approach and the two data sources during the same time period.After comparing and analyzing the VTCI results of Terra-MODIS and NOAA-AVHRR in the same ten days,it is obvious that the drought distributions reflected by two different data sources are similar.Moreover,both of them are in accordance with the actual drought distribution.Although these two data sources have some differences,the scatter plots of the two VTCI results show significant linear correlations,which illustrates that the VTCI drought monitoring results of Terra-MODIS and NOAA-AVHRR are comparable in the same time scale.

关 键 词：干旱监测 条件植被温度指数 MODIS AVHRR 

分 类 号：Q948.11[生物学—植物学]