NDLI: Extracting spatial information of harvest index for winter wheat based on modis ndvi in north China

Content Provider	IEEE Xplore Digital Library
Author	Jianqiang Ren Xingren Liu Zhongxin Chen Huajun Tang
Copyright Year	2010
Description	Author affiliation: Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China (Xingren Liu) \|\| Key Laboratory of Resources Remote-Sensing & Digital Agriculture, Ministry of Agriculture, Beijing 100081, China (Jianqiang Ren; Zhongxin Chen; Huajun Tang)
Abstract	In order to acquire the spatial information of winter wheat harvest index (HI), depending on the crop growth profile of time-series MODIS-NDVI to calculate mean slope of NDVI curve and accumulated NDVI at stage of before anthesis and after anthesis, the authors made full use of remote sensing information and structured two parameters HINDVI-k and HINDVI-SUM according to the definition of HI of crop. Then relationships between the two parameters and field measured HI of winter wheat were established respectively. After validation of retrieved winter wheat HI, it was shown that the accuracy of the retrieved HI of winter wheat was high and satisfied at large scale in study region of Huanghuaihai Plain in China. The mean relative errors of the retrieved HI were 3.60% and 2.40% and RMSE were 0.04 and 0.02 respectively. It was proved that the method of structuring parameters of HINDVI-k and HINDVI_SUM and extracting harvest index for winter wheat based on timeseries MODIS-NDVI was reasonable and feasible.
Starting Page	2143
Ending Page	2146
File Size	675779
Page Count	4
File Format	PDF
ISBN	9781424495658
ISSN	21537003
e-ISBN	9781424495665
e-ISBN	9781424495641
DOI	10.1109/IGARSS.2010.5651877
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-07-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Agriculture Indexes Remote sensing Biomass Pollution measurement Biological system modeling Time series analysis Savitzky-Golay filter Harvest index crop winter wheat remote sensing MODIS NDVI
Content Type	Text
Resource Type	Article

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