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.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
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
