2019
DOI: 10.1016/j.agrformet.2019.06.007
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Improvement of sap flow estimation by including phenological index and time-lag effect in back-propagation neural network models

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Cited by 22 publications
(31 citation statements)
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“…Because the soil water content increases sharply after precipitation, and the sap flow increases slowly due to the physiological control of the plant, there may be a nonlinear relationship between the sap flow and the soil water content, which is not in line with the basic statistical method assumptions. The reason may also be that soil moisture is not a main limiting factor because the stands do not suffer from water stress all the time (other studies have shown that soil water is not an important driving variable for transpiration, which may be due to humid conditions (Tu et al, 2019)) according to a study that divided REW into several stages (Fu et al, 2020).…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…Because the soil water content increases sharply after precipitation, and the sap flow increases slowly due to the physiological control of the plant, there may be a nonlinear relationship between the sap flow and the soil water content, which is not in line with the basic statistical method assumptions. The reason may also be that soil moisture is not a main limiting factor because the stands do not suffer from water stress all the time (other studies have shown that soil water is not an important driving variable for transpiration, which may be due to humid conditions (Tu et al, 2019)) according to a study that divided REW into several stages (Fu et al, 2020).…”
Section: Methodsmentioning
confidence: 99%
“…However, recent studies have shown that there is a nonlinear and complex interaction between transpiration and control factors (Liu et al, 2019; Oogathoo et al, 2020), which is different from the basic setting of traditional statistical methods. Because the traditional method assumes that the correlation relationship obeys a smooth and continuous linear polynomial curve, the field test data are not completely consistent with the statistical analysis results (Tu et al, 2019). Moreover, the impact of variables on sap flow varies with climate region, soil characteristics, tree species and tree age.…”
Section: Introductionmentioning
confidence: 99%
“…Based on the forward-propagating error information, the BPNN uses the gradient descent method to modify the network's multilayer connection weights and thresholds layer by layer from back to front, until it reaches the termination condition. Its main applications are in information analysis, image processing, and data optimization [27,28] .…”
Section: Soil Moisture Regulation Modelmentioning
confidence: 99%
“…where X max , X min are the maximum and minimum of all values applied to the variables and X, X norm are the measured values of all the variables before and after treatment, respectively [12,21,36].…”
Section: Data Collection and Pre-processingmentioning
confidence: 99%
“…Though the mathematical model derived from Fick's second law [6][7][8][9][10] and the pseudo-second-order kinetic model [11] have been established to predict the dyeing effect in SC-CO 2 , the lack of the parameters such as diffusion coefficient limits their applications. Artificial neural network (ANN) with superior ability to learn and classify data which come from studies on the function of the brain and nerve systems as well as the mechanism of learning and responding [12,13]. Generalized Regression Neural Network (GRNN) and Back Propagation Neural Network (BPNN) are two commonly paradigms [14,15].…”
Section: Introductionmentioning
confidence: 99%