2016年7月29-31日,由第二军医大学长海医院与Asian Journal of Urology杂志编辑部联合主办的"第十届国际前列腺疾病论坛"在上海隆重召开。中国工程院院士、第二军医大学校长孙颖浩教授担任本次大会主席,美国费罗里达医院、全球机器人...2016年7月29-31日,由第二军医大学长海医院与Asian Journal of Urology杂志编辑部联合主办的"第十届国际前列腺疾病论坛"在上海隆重召开。中国工程院院士、第二军医大学校长孙颖浩教授担任本次大会主席,美国费罗里达医院、全球机器人中心主任Vipul R Patel教授担任本次大会共同主席,中国工程院院士郭应禄教授、于金明教授共同担任本次大会名誉主席。中华医学会泌尿外科分会前任主任委员叶章群教授,候任主任委员黄健教授以及副主任委员、展开更多
In recent years, herbaceous species such as Deyeuxia angustifolia (Kom.) Y. L. Chang has invaded alpine tundra regions of the western slope of the Changbai Mountains. Because atmospheric nitrogen deposition is predi...In recent years, herbaceous species such as Deyeuxia angustifolia (Kom.) Y. L. Chang has invaded alpine tundra regions of the western slope of the Changbai Mountains. Because atmospheric nitrogen deposition is predicted to increase under a warming climate and D. angustifolia is sensitive to nitrogen addition, field experiments were conducted from 2010 to 2013 to determine the effect of increased nitrogen deposition on the mechanisms of D. angustifolia invasion. The goal of this study is to evaluate the impact of increased nitrogen deposition on the changes in alpine tundra vegetation (consisting mostly of Rhododendron chrysanthum Pall. and Vaccinium uliginosum Linn.). The results showed that: 1) simulated nitrogen deposition affected overall characteristics and structure of R. chrysanthum and E uliginosum communities and had a positive impact on the growth of tundra vegetation invaded by 1). angustifolia; 2) R. chrysanthum was more resistant to invasion by D. angustifolia than V.. uliginosum; 3) simulated nitrogen deposition could improve the growth and enhance the competitiveness of D. angustifolia, which was gradually replacing R. chrysanthum and V. uliginosum and might become the dominant species in the system in future, transforming alpine tundra into alpine meadow in the Chanebai Mountains.展开更多
The purification law of nitrogen in Deyeuxia angustifolia, Carex lasiocarpa and Deyeuxia angustifolia-Carex lasiocarpa combined wetland systems in the Sanjiang Plain, China was studied by field simulation experiment. ...The purification law of nitrogen in Deyeuxia angustifolia, Carex lasiocarpa and Deyeuxia angustifolia-Carex lasiocarpa combined wetland systems in the Sanjiang Plain, China was studied by field simulation experiment. The results indicate that the removal rates of TN, NH4^+-N and NO3^--N in above three types of wetlands present an obvious logarithm growth trend along with the time. There are evident removal effects for NH4+-N and NOa--N in water bodies of wetlands after the 30th day of experiment, with the removal rates over 80.0%, but the removal rate of TN is slightly low, being 63.1%-74.3%. NO3 -N is most quickly removed by the combined wetland, and NH4^+-N by Deyeuxia angustifolia wetland. The removal speeds of TN by the three wetland systems are comparatively slow, of which the Deyeuxia angustifolia wetland is the fastest. In consideration of plant growth season, Deyeuxia angustifolia wetland has much more practical application value in purifying nitrogen. These results can provide references for the study on the purification function of wetlands and the control of non-point source pollution in Northeast China.展开更多
文摘2016年7月29-31日,由第二军医大学长海医院与Asian Journal of Urology杂志编辑部联合主办的"第十届国际前列腺疾病论坛"在上海隆重召开。中国工程院院士、第二军医大学校长孙颖浩教授担任本次大会主席,美国费罗里达医院、全球机器人中心主任Vipul R Patel教授担任本次大会共同主席,中国工程院院士郭应禄教授、于金明教授共同担任本次大会名誉主席。中华医学会泌尿外科分会前任主任委员叶章群教授,候任主任委员黄健教授以及副主任委员、
基金Special Fund of National Seismological Bureau,China(No.201208005)National Natural Science Foundation of China(No.41171072,41101523)
文摘In recent years, herbaceous species such as Deyeuxia angustifolia (Kom.) Y. L. Chang has invaded alpine tundra regions of the western slope of the Changbai Mountains. Because atmospheric nitrogen deposition is predicted to increase under a warming climate and D. angustifolia is sensitive to nitrogen addition, field experiments were conducted from 2010 to 2013 to determine the effect of increased nitrogen deposition on the mechanisms of D. angustifolia invasion. The goal of this study is to evaluate the impact of increased nitrogen deposition on the changes in alpine tundra vegetation (consisting mostly of Rhododendron chrysanthum Pall. and Vaccinium uliginosum Linn.). The results showed that: 1) simulated nitrogen deposition affected overall characteristics and structure of R. chrysanthum and E uliginosum communities and had a positive impact on the growth of tundra vegetation invaded by 1). angustifolia; 2) R. chrysanthum was more resistant to invasion by D. angustifolia than V.. uliginosum; 3) simulated nitrogen deposition could improve the growth and enhance the competitiveness of D. angustifolia, which was gradually replacing R. chrysanthum and V. uliginosum and might become the dominant species in the system in future, transforming alpine tundra into alpine meadow in the Chanebai Mountains.
基金Under the auspices of Knowledge Innovation Programes of Chinese Academy of Sciences (No. KZCX2-YW-425-02)National Natural Science Foundation of China (No. 40871049)Key Program of National Natural Science Foundation of China (No. 40830535)
文摘The purification law of nitrogen in Deyeuxia angustifolia, Carex lasiocarpa and Deyeuxia angustifolia-Carex lasiocarpa combined wetland systems in the Sanjiang Plain, China was studied by field simulation experiment. The results indicate that the removal rates of TN, NH4^+-N and NO3^--N in above three types of wetlands present an obvious logarithm growth trend along with the time. There are evident removal effects for NH4+-N and NOa--N in water bodies of wetlands after the 30th day of experiment, with the removal rates over 80.0%, but the removal rate of TN is slightly low, being 63.1%-74.3%. NO3 -N is most quickly removed by the combined wetland, and NH4^+-N by Deyeuxia angustifolia wetland. The removal speeds of TN by the three wetland systems are comparatively slow, of which the Deyeuxia angustifolia wetland is the fastest. In consideration of plant growth season, Deyeuxia angustifolia wetland has much more practical application value in purifying nitrogen. These results can provide references for the study on the purification function of wetlands and the control of non-point source pollution in Northeast China.