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Using HJ-CCD image and PLS algorithm to estimate the yield of field-grown winter wheat

التفاصيل البيبلوغرافية
العنوان: Using HJ-CCD image and PLS algorithm to estimate the yield of field-grown winter wheat
المؤلفون: Peng-Peng Zhang, Xin-Xing Zhou, Zhi-Xiang Wang, Wei Mao, Wen-Xi Li, Fei Yun, Wen-Shan Guo, Chang-Wei Tan
المصدر: Scientific Reports, Vol 10, Iss 1, Pp 1-10 (2020)
بيانات النشر: Nature Portfolio, 2020.
سنة النشر: 2020
المجموعة: LCC:Medicine
LCC:Science
مصطلحات موضوعية: Medicine, Science
الوصف: Abstract Remote sensing has been used as an important means of estimating crop production, especially for the estimation of crop yield in the middle and late growth period. In order to further improve the accuracy of estimating winter wheat yield through remote sensing, this study analyzed the quantitative relationship between satellite remote sensing variables obtained from HJ-CCD images and the winter wheat yield, and used the partial least square (PLS) algorithm to construct and validate the multivariate remote sensing models of estimating the yield. The research showed a close relationship between yield and most remote sensing variables. Significant multiple correlations were also recorded between most remote sensing variables. The optimal principal components numbers of PLS models used to estimate yield were 4. Green normalized difference vegetation index (GNDVI), optimized soil-adjusted vegetation index (OSAVI), normalized difference vegetation index (NDVI) and plant senescence reflectance index (PSRI) were sensitive variables for yield remote sensing estimation. Through model development and model validation evaluation, the yield estimation model’s coefficients of determination (R2) were 0.81 and 0.74 respectively. The root mean square error (RMSE) were 693.9 kg ha−1 and 786.5 kg ha−1. It showed that the PLS algorithm model estimates the yield better than the linear regression (LR) and principal components analysis (PCA) algorithms. The estimation accuracy was improved by more than 20% than the LR algorithm, and was 13% higher than the PCA algorithm. The results could provide an effective way to improve the estimation accuracy of winter wheat yield by remote sensing, and was conducive to large-area application and promotion.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2045-2322
Relation: https://doaj.org/toc/2045-2322
DOI: 10.1038/s41598-020-62125-5
URL الوصول: https://doaj.org/article/aabf3488118d418c9bfd3f272ee78657
رقم الأكسشن: edsdoj.bf3488118d418c9bfd3f272ee78657
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:20452322
DOI:10.1038/s41598-020-62125-5