基于多源遥感的荒漠绿洲地区土壤湿度反演方法研究
Study on Soil Moisture Inversion Method in Desert Oasis Regions Based on Multi-source Remote Sensing
路钊 1王大庆 2时玥 2黄勇 2丁珂 2赵加正 3陈阳4
作者信息
- 1. 陆军工程大学 指挥控制工程学院,江苏 南京 210001;31605 部队,江苏 南京 210011
- 2. 陆军工程大学 国防工程学院,江苏 南京 210001
- 3. 芜湖市生态环境保护综合行政执法支队,安徽 芜湖 241002
- 4. 陆军指挥学院,江苏 南京 211800
- 折叠
摘要
干旱半干旱地区的土壤湿度遥感反演有助于发现干旱的发生规律.以甘肃省民勤荒漠绿洲地区为研究区,利用GF-6 WFV数据和CBERS-04 IRS数据为遥感数据源,通过光谱特征分析,对垂直干旱指数、改进的垂直干旱指数、温度植被干旱指数在干旱半干旱地区土壤湿度反演的适用性进行探讨.次年同时期的实测土壤湿度被用于反演结果的辅助验证.结果表明,温度植被干旱指数反演结果更为符合研究区的地表覆盖规律,垂直干旱指数、改进的垂直干旱指数反演结果不能有效反映地表湿度的差异.研究结论可为干旱荒漠绿洲地区的土壤湿度监测提供参考.
Abstract
Remote sensing inversion of soil moisture in arid and semi-arid areas is helpful to discover the law of drought occurrence.In this paper,Minqin desert oasis in Gansu province was selected as the study area,and GF-6 WFV data and CBERS-04 IRS data were selected as the remote sensing data sources.By spectral feature analysis,the applicability of perpendicular drought index,modified perpendicular drought index and temperature vegetation drought index in soil moisture inversion in arid and semi-arid areas were dis-cussed.The measured soil moisture at the same time in the following year was used to verify the inversion results.The results showed that the inversion results of temperature vegetation drought index were more in line with the law of land cover in the study area,and the inversion results of perpendicular drought index,modified perpendicular drought index cannot effectively reflect the difference of land surface humidity.The results could provide reference for monitoring soil moisture in arid desert oasis.
关键词
土壤湿度/遥感/垂直干旱指数/改进的垂直干旱指数/温度植被干旱指数Key words
soil moisture/remote sensing/PDI/MPDI/TVDI引用本文复制引用
出版年
2024
NETL
NSTL
万方数据