spphpr: Spring Phenological Prediction

In spphpr: Spring Phenological Prediction

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

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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, Di Tang, Yunfeng Yang, 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], Jing Tan [aut], Brady K. Quinn [aut]

Maintainer: Peijian Shi <[e-mail]>

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. \Sexpr[results=rd]{tools:::Rd_expr_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. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1093/aesa/sax063")}

spphpr documentation built on April 11, 2025, 6:11 p.m.