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Remote Sens. 2013, 5(2), 539-557; doi:10.3390/rs5020539
Article

Remote Sensing Based Yield Estimation in a Stochastic Framework — Case Study of Durum Wheat in Tunisia

1,†,* , 1,†,* , 2
, 1
 and 1
Received: 3 December 2012; in revised form: 15 January 2013 / Accepted: 16 January 2013 / Published: 28 January 2013
(This article belongs to the Special Issue Advances in Remote Sensing of Agriculture)
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Abstract: Multitemporal optical remote sensing constitutes a useful, cost efficient method for crop status monitoring over large areas. Modelers interested in yield monitoring can rely on past and recent observations of crop reflectance to estimate aboveground biomass and infer the likely yield. Therefore, in a framework constrained by information availability, remote sensing data to yield conversion parameters are to be estimated. Statistical models are suitable for this purpose, given their ability to deal with statistical errors. This paper explores the performance in yield estimation of various remote sensing indicators based on varying degrees of bio-physical insight, in interaction with statistical methods (linear regressions) that rely on different hypotheses. Performances in estimating the temporal and spatial variability of yield, and implications of data scarcity in both dimensions are investigated. Jackknifed results (leave one year out) are presented for the case of wheat yield regional estimation in Tunisia using the SPOT-VEGETATION instrument. Best performances, up to 0.8 of R2, are achieved using the most physiologically sound remote sensing indicator, in conjunction with statistical specifications allowing for parsimonious spatial adjustment of the parameters.
Keywords: optical remote sensing; multitemporal observations; yield; statistical models; SPOT-VGT optical remote sensing; multitemporal observations; yield; statistical models; SPOT-VGT
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Meroni, M.; Marinho, E.; Sghaier, N.; Verstrate, M.M.; Leo, O. Remote Sensing Based Yield Estimation in a Stochastic Framework — Case Study of Durum Wheat in Tunisia. Remote Sens. 2013, 5, 539-557.

AMA Style

Meroni M, Marinho E, Sghaier N, Verstrate MM, Leo O. Remote Sensing Based Yield Estimation in a Stochastic Framework — Case Study of Durum Wheat in Tunisia. Remote Sensing. 2013; 5(2):539-557.

Chicago/Turabian Style

Meroni, Michele; Marinho, Eduardo; Sghaier, Nabil; Verstrate, Michel M.; Leo, Olivier. 2013. "Remote Sensing Based Yield Estimation in a Stochastic Framework — Case Study of Durum Wheat in Tunisia." Remote Sens. 5, no. 2: 539-557.


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