中文摘要：

臭氧很好作为最损坏到农业庄稼和另外的工厂的空气污染物质被记录。它被报导球的 O_3 集中很快增加在的那对流最近 20 年。在庄稼上评估并且预言臭氧集中变化的影响在科学界正在引起大注意。在中国，关于这的主要学习方法走了被控制例如，实验打开优秀房间。但是关于与庄稼模型一起的庄稼上的臭氧的影响的数字模拟学习慢慢地被开发而且，关于臭氧和二氧化碳的联合影响的学习没被报导。改进 agroecosystem 模型被介绍同时评估球的 O3 和 CO2 集中由与一个存在 agroecosystem biogeochemical 模型一起在光合作用上关于臭氧的影响集成算法在纸在庄稼上改变的对流的影响(作为 DNDC 说出) 。庄稼生长的主要生理的过程(物候学，叶面指数，光合作用，呼吸，吸收分配并且不久) 在前者， DNDC 被放在。关于光合作用和冬季小麦叶上的臭氧的影响的算法在修改 DNDC 模型被增加以便在生长上揭示臭氧和二氧化碳的影响，开发，并且由在在以前的 DNDC 存在的冬季小麦的光合作用上关于二氧化碳的影响联合模拟产出冬季小麦的形成。在纸，第一吸收分配算法和一些基因参数(例如每天，每开发的热时间上演) 被修改以便 DNDC 能在诺思中国是适用的。第二，庄稼上的臭氧的影响与二个不同方法被模仿 -- 一个人是轻使用效率上的臭氧的影响，并且其它是叶子光合作用上的臭氧的直接效果。模仿的后者结果通过比较他们的模仿的结果接近实验大小。最后，叶生长上的臭氧的直接影响的方法被采用，关于叶生长和死亡上的臭氧的影响的系数被查明。agroecosystem 上的气候变化，增加的臭氧，和二氧化碳集中的效果被试试在被认为先进、可信的学习数字地被模仿。

英文摘要：

Ozone is well documented as the air pollutant It is reported that tropospheric 03 concentration most damaging to agricultural crops and other plants. increases rapidly in recent 20 years. Evaluating and predicting impacts of ozone concentration changes on crops are drawing great attention in the scientific community. In China, main study method about this filed is controlled experiments, for example, Open Top Chambers. But numerical simulation study about impacts of ozone on crops with crop model was developed slowly, what is more, the study about combined impacts of ozone and carbon dioxide has not been reported. The improved agroecosystem model is presented to evaluate simultaneously impacts of tropospheric O3 and CO2 concentration changes on crops in the paper by integrating algorithms about impacts of ozone on photosynthesis with an existing agroecosystem biogeochemical model （named as DNDC）. The main physiological processes of crop growth （phenology, leaf area index, photosynthesis, respiration, assimilated allocation and so on） in the former DNDC are kept. The algorithms about impacts of ozone on photosynthesis and winter wheat leaf are added in the modified DNDC model in order to reveal impacts of ozone and carbon dioxide on growth, development, and yield formation of winter wheat by coupling the simulation about impacts of carbon dioxide on photosynthesis of winter wheat which exists in the former DNDC. In the paper, firstly assimilate allocation algorithms and some genetic parameters （such as daily thermal time of every development stage） were modified in order that DNDC can be applicable in North China. Secondly impacts of ozone on crops were simulated with two different methods- one was impacts of ozone on light use efficiency, and the other was direct effects of ozone on leaves photosynthesis. The latter simulated results are closer to experiment measurements through comparing their simulating results. At last the method of direct impacts of ozone on leaf growth is adopted and the coeffici