Nelson, G. C., Rosegrant, M. W., Koo, J., Robertson, R., Sulser, T., Zhu, T., ... & Magalhaes, M. (2009). Climate change: Impact on agriculture and costs of adaptation
I didn’t find a single approach to assess the impact of Climate Change, However you can separate the impact on three climate elements, Variation of Rainfall Regime, Temperature increase, and Teleconnections.
These elements may affect The Growing Season Length, Birds Immigration times, Insects appearance onset.
Good issue to be deliberate. I have not worked on the issue, however dealt with the small holders focussing on vulnerability and adaptation to climate change.
I know FiBL in Switzerland has done a lot of research work on this topic. Dr. Adrian Mueller will organise a few webinars in the coming months under the title “The potential of sustainable farming systems to adapt to climate change”.@Adrian Mueller
May refer these models - WOFOST (Van Diepen et al., 1989), ORYZA (Bouman and Van Laar, 2006), WTGROWS (Kalra and Aggarwal, 1996), INFORCROP (Aggarwal et al., 2006) and MungGrow (Biswas et al., 2018) also You may explore DNDC....Good Luck..