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	Winter wheat biomass estimation using high temporal and spatial resolution satellite data combined with a light use efficiency model
	Du X.; Li, Q. Z.; Dong, T. F.; Jia, K.
	2015
关键词	biomass winter wheat HJ CCD MODIS photosynthetically active radiation net primary productivity north china yield landsat reflectance ecosystems simulation climate crops
英文摘要	Winter wheat biomass was estimated using HJ CCD and MODIS data, combined with a radiation use efficiency model. Results were validated with ground measurement data. Winter wheat biomass estimated with HJ CCD data correlated well with observed biomass in different experiments (coefficients of determination R-2 of 0.507, 0.556 and 0.499; n = 48). In addition, R-2 values between MODIS estimated and observed biomass are 0.420, 0.502 and 0.633. Even if we downscaled biomass estimated using HJ CCD data to MODIS pixel size (9 x 9 HJ CCD pixels to approximate that MODIS pixel), R-2 values between estimated and observed biomass were still higher than those from MODIS. We conclude that estimation with remote sensing data, such as the HJ CCD data with high spatial resolution and shorter revisit cycle, can show more detail in spatial pattern and improve the application of remote sensing on a local scale. There is also potential for applying the approach to many other studies, including agricultural production estimation, crop growth monitoring and agricultural ecosystem carbon cycle studies.
出处	Geocarto International
卷	30
期	3
页	258-269
收录类别	SCI
语种	英语
ISSN号	1010-6049
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/38427]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Du X.,Li, Q. Z.,Dong, T. F.,et al. Winter wheat biomass estimation using high temporal and spatial resolution satellite data combined with a light use efficiency model. 2015.

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