Use of normalized difference water index for monitoring live fuel moisture

被引：100

作者：

Dennison, PE

Roberts, DA

Peterson, SH

Rechel, J

机构：

[1] Univ Utah, Dept Geog, Salt Lake City, UT 84112 USA

[2] Univ Calif Santa Barbara, Dept Geog, Santa Barbara, CA 93106 USA

[3] USDA, Forest Serv, Forest Fire Lab, Pacific SW Res Stn, Riverside, CA 92507 USA

来源：

INTERNATIONAL JOURNAL OF REMOTE SENSING | 2005年 / 26卷 / 05期

关键词：

D O I：

10.1080/0143116042000273998

中图分类号：

TP7 [遥感技术];

学科分类号：

081102 ; 0816 ; 081602 ; 083002 ; 1404 ;

摘要：

Normalized Difference Vegetation Index (NDVI) and Normalized Difference Water Index (NDWI) were compared for monitoring live fuel moisture in a shrubland ecosystem. Both indices were calculated from 500 m spatial resolution Moderate Resolution Imaging Spectroradiometer (MODIS) reflectance data covering a 33-month period from 2000 to 2002. Both NDVI and NDWI were positively correlated with live fuel moisture measured by the Los Angeles County Fire Department (LACFD). NDVI had R-2 values ranging between 0.25 to 0.60, while NDWI had significantly higher R-2 values, varying between 0.39 and 0.80. Water absorption measures, such as NDWI, may prove more appropriate for monitoring live fuel moisture than measures of chlorophyll absorption such as NDVI.

引用

页码：1035 / 1042

页数：8

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