spphpr {spphpr}R Documentation

Spring Phenological Prediction

Description

Predicts the occurrence times (in day of year) of spring phenological events. Three methods, including the accumulated degree days (ADD) method, the accumulated days transferred to a standardized temperature (ADTS) method, and the accumulated developmental progress (ADP) method, were used. See Shi et al. (2017a, 2017b) for details.

Details

The DESCRIPTION file:

Package: spphpr
Type: Package
Title: Spring Phenological Prediction
Version: 0.1.4
Date: 2024-12-12
Authors@R: c(person(given="Peijian", family="Shi", email="pjshi@njfu.edu.cn", role=c("aut", "cre")), person(given=c("Zhenghong"), family="Chen", email="chenzh64@126.com", role=c("aut")), person(given=c("Brady K."), family="Quinn", email="brady.quinn@dfo-mpo.gc.ca", role=c("aut")))
Author: Peijian Shi [aut, cre], Zhenghong Chen [aut], Brady K. Quinn [aut]
Maintainer: Peijian Shi <pjshi@njfu.edu.cn>
Description: Predicts the occurrence times (in day of year) of spring phenological events. Three methods, including the accumulated degree days (ADD) method, the accumulated days transferred to a standardized temperature (ADTS) method, and the accumulated developmental progress (ADP) method, were used. See Shi et al. (2017a) <doi:10.1016/j.agrformet.2017.04.001> and Shi et al. (2017b) <doi:10.1093/aesa/sax063> for details.
Depends: R (>= 4.2.0)
License: GPL (>= 2)

Index of help topics:

ADD                     Function for Implementing the Accumulated
                        Degree Days Method
ADP                     Function for Implementing the Accumulated
                        Developmental Progress Method
ADTS                    Function for Implementing the Accumulated Days
                        Transferred to a Standardized Temperature
                        Method
BJMDT                   Mean Daily Temperature Data of Beijing from
                        1951 to 2012 with the exception of 1968.
apricotFFD              First flowering date records of _Prunus
                        armeniaca_
predADD                 Prediction Function of the Accumulated Degree
                        Days Method
predADP                 Prediction Function of the Accumulated
                        Developmental Progress Method
predADTS                Prediction Function of the Accumulated Days
                        Transferred to a Standardized Temperature
                        Method
spphpr                  Spring Phenological Prediction
toDOY                   Function for Transferring a Date to the Value
                        of Day of Year

Note

We thank Benjamin Altmann, Lei Chen, Linli Deng, Feng Ge, Wen Gu, Liang Guo, Jianguo Huang, Cang Hui, Konstanze Lauseker, Gadi V.P. Reddy, Jing Tan, Mei Xiao, Lin Wang, and Wangxiang Zhang for their valuable help during the development of this package.

Author(s)

Peijian Shi [aut, cre], Zhenghong Chen [aut], Brady K. Quinn [aut]

Maintainer: Peijian Shi <pjshi@njfu.edu.cn>

References

Shi, P., Chen, Z., Reddy, G.V.P., Hui, C., Huang, J., Xiao, M. (2017a) Timing of cherry tree blooming: Contrasting effects of rising winter low temperatures and early spring temperatures. Agricultural and Forest Meteorology 240-241, 78-89. doi:10.1016/j.agrformet.2017.04.001

Shi, P., Fan, M., Reddy, G.V.P. (2017b) Comparison of thermal performance equations in describing temperature-dependent developmental rates of insects: (III) Phenological applications. Annals of the Entomological Society of America 110, 558-564. doi:10.1093/aesa/sax063


[Package spphpr version 0.1.4 Index]