首页> 外文会议>International Geoscience Remote Sensing Symposium >Monitoring Drought Dynamics in the Ejin Oasis using Drought Indices from MODIS Data
【24h】

Monitoring Drought Dynamics in the Ejin Oasis using Drought Indices from MODIS Data

机译:使用MODIS数据的干旱指数监测ejin Oasis中的干旱动态

获取原文

摘要

The Ejin Oasis in arid environments suffers with frequent drought due to insufficient water resources and abnormally high summer-temperature. Detailed analysis of remote sensing data has been carried out for the years 2001-2006. Vegetative drought indices like Vegetation Condition Index (VCI) and Temperature Condition Index (TCI) and Vegetation Health Index (VHI) have been derived using Normalized Difference Vegetation Index (NDVI) values obtained from TERRA/Moderate Resolution Imaging Spectoradiometer (MODIS). Moisture Condition Index (MCI) has been developed to assess hydrological droughts using Normalized Difference Moisture Index (NDMI) values obtained from MODIS/TERRA. Detailed analyses of spatial and temporal drought dynamics for seasons have been compared through drought index maps generated in geographical information systems environments during the 2001 to 2006 period. Analysis and interpretation of these maps will show the spatial patterns of drought with vegetative drought indices and hydrological drought indices. Furthermore, results will help us to identify the high drought risk areas and the short term trend of drought in the Ejin Oasis.
机译:干旱环境中的ejin绿洲由于水资源不足和夏季温度异常高的频繁干旱。 2001 - 2006年的遥感数据进行了详细分析。使用从Terra /中度分辨率成像源计(MODIS)获得的归一化差异植被指数(NDVI)值,得出植被状况指数(VCI)和温度条件指数(TCI)和植被健康指数(VHI)等植被干旱指标。已经开发出湿气条件指数(MCI)以利用从MODIS / TERTA获得的归一化差异湿度指数(NDMI)值来评估水文干旱。通过在2001年至2006年期间在地理信息系统环境中产生的干旱指数地图进行了季节空间和时间干旱动态的详细分析。这些地图的分析和解释将显示与营养干旱指数和水文干旱指数的干旱空间模式。此外,结果将有助于我们识别高干旱风险领域和ejin绿洲干旱的短期趋势。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号