A non-linear regression form for vegetation index-crop yield relation incorporating acquisition date normalization

被引:11
作者
Dadhwal, VK
Sridhar, VN
机构
[1] Agricultural Resources Division, Space Applications Centre (ISRO), Ahmedabad
关键词
D O I
10.1080/014311697218520
中图分类号
TP7 [遥感技术];
学科分类号
081102 ; 0816 ; 081602 ; 083002 ; 1404 ;
摘要
A non-linear form relating vegetation indices (VI) to crop grain yields which normalizes for differences in acquisition date is suggested. It is based on the assumption that deviations in VI near the peak VI follow a quadratic behaviour. This form gave a higher R(2) value than a simple VI-yield linear model on a multi-year, multi-location data set of IRS (Indian Remote Sensing Satellite-1A) LISS-I(Linear Imaging Self Scanner-I) derived near-infrared (NIR)/red radiance ratios and wheat grain yields in a study site in Madhya Pradesh (India). As the suggested model includes time of peak as a variable, it allows integration of results from other sources, such as, weather-based crop phenology model or high repetivity spectral data into the VI-yield relation.
引用
收藏
页码:1403 / 1408
页数:6
相关论文
共 18 条
[1]   SPRING WHEAT YIELD ESTIMATES FROM SPECTRAL REFLECTANCE MEASUREMENTS [J].
AASE, JK ;
SIDDOWAY, FH .
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 1981, 19 (02) :78-84
[2]  
[Anonymous], PHOTONIRVACHAK J IND
[3]  
BADHWAR GD, 1980, PHOTOGRAMM ENG REM S, V46, P369
[4]   THE USE OF LARGE-AREA SPECTRAL DATA IN WHEAT YIELD ESTIMATION [J].
BARNETT, TL ;
THOMPSON, DR .
REMOTE SENSING OF ENVIRONMENT, 1982, 12 (06) :509-518
[5]  
CRIST EP, 1980, P 14 INT S REM SENS, P1031
[6]   LARGE-AREA CROP MONITORING WITH THE NOAA AVHRR - ESTIMATING THE SILKING STAGE OF CORN DEVELOPMENT [J].
GALLO, KP ;
FLESCH, TK .
REMOTE SENSING OF ENVIRONMENT, 1989, 27 (01) :73-80
[7]  
HODGES T, 1979, SRL900409 AGRISTARS
[8]  
*IMSL INT MATH SHA, 1984, IMSL LIBR REF MAN
[9]   AN ALGORITHM FOR LEAST-SQUARES ESTIMATION OF NONLINEAR PARAMETERS [J].
MARQUARDT, DW .
JOURNAL OF THE SOCIETY FOR INDUSTRIAL AND APPLIED MATHEMATICS, 1963, 11 (02) :431-441
[10]  
NAVALGUND RR, 1991, CURR SCI INDIA, V61, P162