QQ客服 官方微博 反馈留言

	Plasticity in nitrogen form uptake and preference in response to long-term nitrogen fertilization
	Song M. H.; Zheng, L. L.; Suding, K. N.; Yin, T. F.; Yu, F. H.
	2015
关键词	Plasticity N chemical forms Ammonium Nitrate Long-term N addition Alpine meadow niche complementarity species-diversity plant-communities biodiversity coexistence dominance ammonium kinetics nitrate europe
英文摘要	Niche complementarity arising from divergence in resource use is an important mechanism underlying species coexistence. We hypothesized fertilization with different N forms would generate plastic divergence among species with regard to their N form uptake and preference. In the eighth year of a long-term N fertilization experiment in an alpine meadow on the Tibetan plateau, we labeled 11 common plant species with ammonium-N-15 or nitate-N-15 in subplots without fertilization (control) or fertilized with 7.5 g N m(-2) yr(-1) in the form of ammonium, nitrate, or ammonium nitrate to trace N form uptake. Depending on species, fertilization with nitrate or ammonium nitrate had positive, negative or neutral effects on NO3-N uptake rate, although ammonium fertilization showed little impact. By contrast, fertilization with any N form had little impact on NH4-N uptake rate. Consequently, effects of nitrate fertilization and ammonium nitrate fertilization on relative N form preference diverged among the species and the functional groups (grasses, sedges, legumes and forbs). Alpine plant species can diverge in N form uptake and preference in response to long-term N fertilization, and such divergence may contribute to species coexistence after long-term fertilization.
出处	Plant and Soil
卷	394
期	1-2
页	215-224
收录类别	SCI
语种	英语
ISSN号	0032-079X
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/38849]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Song M. H.,Zheng, L. L.,Suding, K. N.,et al. Plasticity in nitrogen form uptake and preference in response to long-term nitrogen fertilization. 2015.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。