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Plant C, N, P stoichiometry was effected with nitrogen deposition on the Loess Plateau, China

文献类型： 会议论文

第一作者： Shulan Su

作者： Shulan Su 1 ; Xudong Li 1 ; Decao Niu 1 ; Haiyan Wen 1 ; Huige Han 1 ; Caixia Wu 1 ; Hua Fu 1 ;

作者机构： 1.State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, P.O. Box 61, Lanzhou 730000, People's Republic of China

关键词： Nitrogen addition;nutrition utilization efficiency;plant community.

会议名称： International Grassland Congress

主办单位：

页码： 1548-1549

摘要： The mass ratio of C:N:P (Carbon: Nitrogen: Phosphorus) in plant tissue can reflect the utilization efficiency of these basic elements (Piao et al. 2005). Additionally, the N:P ratio in plant tissue can be used to detect nutrient limitations as N, P orboth are most often the driving force for ecosystem development and change (Koerselman and Meuleman 1996). N deposition has been increasing dramatically and it has great influence on the productivity, stabi 1 ity and nutrient supply conditions in the terrestrial and aquatic ecosystem in recent years (Wang and Yu 2008). Many scholars have focused on the C:N:P stoichiometry of individual plant or the whole plant communities which were based on weighted average of important key species and their element contents, rather than by collecting biomass samples of all the plants in the community level. Moreover, less is known of the effects of N deposition on C:N:P stoichiometry characteristics of plant communities, especially the grasslands of the Loess Plateau. An experiment was set to study the effects of N deposition on C, N, P stoichiometry characteristics by simulating N deposition by way of N addition.

分类号： S812-532

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