Effects of Nitrogen Addition on Nitrogen Resorption in Temperate Shrublands in Northern China

doi:10.1371/journal.pone.0130434

	Effects of Nitrogen Addition on Nitrogen Resorption in Temperate Shrublands in Northern China
	Zhang, Jianhua 1; Li, He 1; Shen, Haihua ; Chen, Yahan ; Fang, Jingyun; Tang, Zhiyao 2,3
	2015
发表期刊	PLOS ONE
ISSN	1932-6203
卷号	10 期号:6
摘要	Nutrient resorption from senescing leaves is a key mechanism of nutrient conservation for plants. The nutrient resorption efficiency is highly dependent on leaf nutrient status, species identity and soil nutrient availability. Nitrogen is a limiting nutrient in most ecosystems, it is widely reported that nitrogen resorption efficiency (NRE) was highly dependent on the soil nitrogen availability and vary with N deposition. The effects of nitrogen deposition on NRE and nitrogen concentration in green and senescing leaves have been well established for forests and grasslands; in contrast, little is known on how plants in shrublands respond to nitrogen deposition across the world. In this study, we conducted a two-year nitrogen addition manipulation experiment to explore the responses of nitrogen concentration in green and senescing leaves, and NRE of seven dominant species, namely, Vitex negundo, Wikstroemia chamaedaphne, Carex rigescens and Cleistogenes chinensis from the Vitex negundo community, and Spirea trilobata, Armeniaca sibirica, V. negundo, C. rigescens and Spodiopogon sibiricus from the Spirea trilobata community, to nitrogen deposition in two typical shrub communities of Mt. Dongling in northern China. Results showed that NRE varied remarkably among different life forms, which was lowest in shrubs, highest in grasses, and intermediate in forbs, implying that shrubs may be most capable of obtaining nitrogen from soil, grasses may conserve more nitrogen by absorption from senescing leaves, whereas forbs may adopt both mechanisms to compete for limited nitrogen supply from the habitats. As the N addition rate increases, N concentration in senescing leaves ([N](s)) increased consistent from all species from both communities, that in green leaves ([N](g)) increased for all species from the Vitex negundo community, while no significant responses were found for all species from the Spirea trilobata community; NRE decreased for all species except A. sibirica from the Vitex community and W. chamaedaphn from the Spirea community. Given the substantial interspecific variations in nutrient concentration, resorption and the potentially changing community composition, and the increased soil nutrient availability due to fertilization may indirectly impact nutrient cycling in this region.
学科领域	Multidisciplinary Sciences
DOI	10.1371/journal.pone.0130434
收录类别	SCI
语种	英语
WOS关键词	NUTRIENT RESORPTION ; PHOSPHORUS RESORPTION ; SEMIARID GRASSLAND ; LONG-TERM ; LITTER DECOMPOSITION ; SENESCING LEAVES ; LEAF NUTRIENTS ; INNER-MONGOLIA ; LIFE-SPAN ; PLANT
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000356567500104
出版者	PUBLIC LIBRARY SCIENCE
文献子类	Article
出版地	SAN FRANCISCO
资助机构	National Basic Research Program of China on Global Change [2014CB954004] ; National Natural Science Foundation of China [31321061, 31330012] ; Strategic Priority Research Program of CAS [XDA05050300]
作者邮箱	zytang@urban.pku.edu.cn
作品OA属性	Green Published, gold, Green Submitted
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25982
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Peking Univ, Minist Educ, Coll Urban & Environm Sci, Dept Ecol, Beijing 100871, Peoples R China 4.Peking Univ, Minist Educ, Key Lab Earth Surface Proc, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jianhua,Li, He,Shen, Haihua,et al. Effects of Nitrogen Addition on Nitrogen Resorption in Temperate Shrublands in Northern China[J]. PLOS ONE,2015,10(6).
APA	Zhang, Jianhua,Li, He,Shen, Haihua,Chen, Yahan,Fang, Jingyun,&Tang, Zhiyao.(2015).Effects of Nitrogen Addition on Nitrogen Resorption in Temperate Shrublands in Northern China.PLOS ONE,10(6).
MLA	Zhang, Jianhua,et al."Effects of Nitrogen Addition on Nitrogen Resorption in Temperate Shrublands in Northern China".PLOS ONE 10.6(2015).

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