Integrated land system modelling

各种驱动因素影响区域一级土地系统的动态，因此必须在土地系统建模中加以考虑。气候因素直接影响生物物理过程（例如，温度和大气中的二氧化碳改变光合作用的速率）和间接影响生物物理过程（例如，温度升高和降水量变化改变了可能的作物轮作和田间工作日的条件，从而影响到作物和畜牧生产的利润）。非气候因素通过政策和体制的变化，最重要的是通过土地使用者的调整和适应，影响社会经济进程。不幸的是，这些驱动因素和影响并不容易解开，因为它们是相互依赖的，某些过程，如作物开花和结果期间的生长，表现出强烈的非线性反应。此外，土地使用者可能成功地补偿了对其生计的一些不利影响，而在其他情况下，甚至利用土地，从而增加了积极影响。该项目将该研究单位的各种项目的模型组成部分联系起来，以高分辨率调查生物物理和社会经济过程之间的相互作用和反馈。其目的是评估德国西南部典型土地系统的脆弱性和敏感性，并探讨适当的适应气候变化的战略。

Various drivers affect the dynamics of land systems at the regional level and have therefore to be captured in land system modelling. Climate factors affect biophysical processes directly (for example, temperature and atmospheric CO2 change the rate of photosynthesis) and indirectly (for example, increasing temperature and change in precipitation alter the conditions for possible crop rotations and field work days, which affects the profitability of crop and livestock production). Nonclimate factors affect socio-economic processes through changes in policies and institutions and, most importantly, through the adjustments and adaptations of land users. Unfortunately, these drivers and impacts cannot easily be disentangled because they work interdependently, and certain processes, such as crop growth during flowering and fruiting, show strongly non-linear responses. Moreover, land users may succeed in compensating for some negative impacts on their livelihoods, while in other cases even exploiting and thereby increasing the positive impacts. This project links model components of the various projects in this research unit to investigate interactions and feedbacks between biophysical and socio-economic processes at high resolution. The objective is to assess the vulnerability and sensitivity of typical land systems in Southwest Germany and to explore suitable adaptation strategies to climate change.