读书报告5_增二氧化碳浓度增氮供应对减少一枝黄花属叶片疾病与光合作用的影响.ppt

期刊介绍 《生态学》（Oecologia）,国际生态学会出版，在ISI科技引文生态学类期刊中位于前列，此刊物主要登载关于生理生态学、种群生态学、植物—动物相互关系、生态系统生态学、群落生态学、生态保护方面的文章，也刊登一些评论性文章及生态学研究方法进展方面的学术论文。 主编：J.R.Ehleringer (Salt Lake City), C.H.Peterson (Morehead City), M.Schaefer ( Gottingen), E.D.Schulze?(Bayreuth) 作者介绍 Evaluated whether leaf spot disease and related effects on photosynthesis are influenced by increased nitrogen (N) input and elevated atmospheric CO2 concentration ([CO2]). Pathogenic fungi may have a profound impact on plant communities by influencing various ecosystem processes such as primary productivity and plant community structure. 引起疾病的真菌在生态系统进程中对植物群落有深刻的影响，比如，主要生产力和植物群落结构 Human related activities are known to increase atmospheric CO2 concentration [CO2]and the rate of nitrogen (N) deposition, which independently or in combination are likely to have large effects on structure and function in terrestrial plant communities. 与人类相关的活动被认为是大气CO2 浓度的增加和N素储存速率的增加，不论是其单独的或是相联合的活动，都可能很大程度上影响到地球植物群落的结构和功能 Increased knowledge of how interactions between plants and pathogens may vary with changes in these abiotic global change factors may be required to accurately predict their effects on plant ecosystem functioning and structure in the future. 增加一些了解，在全球非生命因素改变下植物和病原体是如何进行相互作用的，也许可以精确的预测将来它们对植物生态系统功能和结构的影响。 Although it is well established that leaf diseases reduce the photosynthetic capacity of plants and that elevated [CO2] and increased N input may influence the photosynthetic rates of plants. 尽管叶片疾病会减少植物光合作用能力，但是提高CO2 浓度和增加N的输入会影响植物的光合速率。 we do not know of any studies that have examined how negative effects on photosynthetic rates from pathogenic fungi are affected by simultaneous increase in [CO2 ] and N supply. 我们不知道有哪一个研究调查过同时存在增加CO2 浓度和供应N的情况下引起疾病的真菌对光合速率有怎样的消极影响 Study site and experimental design Disease incidence and severity Gas exchange and relative photosynthetic rate Plant biomass, N content, and chemical analyses Statistical analyses In the present study, we used a subset of plo