Yield and quality of crops for food and feed as affected by regional climate change

气候变化既包括全球气候因子的变化，如大气CO2浓度的变化，也包括温度、降水、风及其平均值、季节甚至日模式的区域变化。关于气候变化对作物产量的潜在影响已经进行了大量的研究。然而，很少有人注意到将作物用作食品和饲料原料对其化学质量的潜在影响，而且几乎没有任何关于气候条件（如CO2富集和温度制度改变）对产量质量的相互作用的数据。P4项目旨在通过真实世界对未来气候情景的模拟，提供有关作物产量和产量质量的新实验数据。实验方法将涉及作物生长(i)在严格控制条件下的二氧化碳和气候室系统中，（ii）在具有环境和预测未来二氧化碳浓度的现场mini-FACE（自由空气二氧化碳富集）系统中，以及（iii）在当前环境条件下在Kraichgau和Mittlere Schwäbische Alb研究区域进行实地调查。将为研究单元的所有其他项目提供数据，特别强调P5项目，以开发和验证新的通用作物生长模型，以预测未来区域气候变化条件下的产量和产量质量。

Climate change comprises both global alterations of climate factors, such as atmospheric CO2 enrichment, and regional alterations of temperature, precipitation, wind as well as their averages and seasonal and even daily patterns. Numerous studies have been performed on potential climate change effects on yield of crops. However, little attention has been paid to potential effects on the chemical quality of crops with respect to their use as raw products for food and feed, and there are hardly any data on the interactions between climatic conditions such as CO2 enrichment and altered temperature regimes on yield quality. Project P4 aims to provide new experimental data on crop yield and yield quality from real world simulations of future climate scenarios. The experimental approaches will involve crop growth (i) in a CO2 and climate chamber system under strictly controlled conditions, (ii) in a mini-FACE (Free Air Carbon Dioxide Enrichment) system in the field with ambient and predicted future CO2 concentrations, and (iii) field investigations in the study regions Kraichgau and Mittlere Schwäbische Alb under current ambient conditions. Data will be provided for all other projects of the Research Unit with special emphasis on Project P5 in order to develop and validate new generic crop growth models to predict yield and yield quality under future regional climate change conditions.