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Pre-harvest wheat yield and production estimation for the Punjab, India

 

作者: R. P. DUBEY,   N. AJWANI,   M. H. KALUBARME,   V. N. SRIDHAR,   R. R. NAVALGUND,   R. K. MAHEY,   S. S. SIDHU,   O. P. JHORAR,   S. S. CHEEMA,   R. S. NA RANG,  

 

期刊: International Journal of Remote Sensing  (Taylor Available online 1994)
卷期: Volume 15, issue 10  

页码: 2137-2144

 

ISSN:0143-1161

 

年代: 1994

 

DOI:10.1080/01431169408954232

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

Two different approaches to relate wheat yield with spectral indices derived from remotely-sensed data have been explored for the state of Punjab, India. In the study based on site-level approach yield obtained from crop-cutting sites was found to be linearly related to NIR/Red ratio derived from Landsat MSS data of corresponding sites in Ludhiana and Patiala districts of Punjab. Incorporation of agrometeorological data was also tried. Certain inherent limitations of the site-level approach led to the district-level studies which focused on the relation of district yields with corresponding average spectral indices derived from satellite sensors like Landsat MSS and lRS-LISS-i. Significant correlations were observed in all cases and the relation based on Landsat MSS/IRS LISS-I data was used for trial forecast of wheat yields for 1989–90 season. A comparison of remote-sensing based production forecast showed good agreement with the conventional estimate of Bureau of Economics and Statistics at state level although at district level, deviations were larger.

 

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