Contrasting responses in leaf nutrient-use strategies of two dominant grass species along a 30-yr temperate steppe grazing exclusion chronosequence

doi:10.1007/s11104-014-2282-7

	Contrasting responses in leaf nutrient-use strategies of two dominant grass species along a 30-yr temperate steppe grazing exclusion chronosequence
	Lu, Xiao-Tao ; Freschet, Gregoire T.; Kazakou, Elena 2; Wang, Zheng-Wen ; Zhou, Li-Shi ; Han, Xing-Guo
	2015
发表期刊	PLANT AND SOIL
ISSN	0032-079X
卷号	387 期号:1-2 页码:69-79
摘要	Grazing exclusion practices can be promising restoration techniques where ecosystem degradation follows from rapidly increasing grazing pressure, as widely observed in northern Chinese grasslands. However, the mechanisms of plant-soil interactions responsible for nutrient cycling restoration remain unclear. We examined the functional response of the two most dominant grass species with contrasting nutrient economies to a grazing exclusion chronosequence varying greatly in soil moisture and extractable N and P. The relative biomass of the nutrient acquisitive species Leymus chinensis increased while that of the nutrient conservative Stipa grandis decreased across the chronosequence. Leymus chinensis displayed increasing leaf nutrient concentration and decreasing nutrient resorption with time since grazing exclusion for both N and P. In contrast, S. grandis showed decreasing leaf N and P concentrations and largely stable nutrient resorption. These differences in plasticity, with respect to nutrient stoichiometry and resorption, suggest contrasting abilities of these two dominant species to compete for soil resources and/or differences in their affinity to the changing forms of soil available N and P likely occurring along the restoration gradient. Ecosystem trajectory of change after grazing exclusion appears therefore largely dependent on the nutrient use strategies of co-occurring dominant grassland species.
关键词	Ecological stoichiometry Grazing exclusion N:P ratio Nutrient resorption Plant-soil feedback Restoration chronosequence Semi-arid grassland Species-specific response
学科领域	Agronomy ; Plant Sciences ; Soil Science
DOI	10.1007/s11104-014-2282-7
收录类别	SCI
语种	英语
WOS关键词	PLANT-SOIL FEEDBACKS ; INNER-MONGOLIA ; RESORPTION EFFICIENCY ; PHOSPHORUS RESORPTION ; NITROGEN ADDITION ; MINERAL-NUTRITION ; CLIMATE-CHANGE ; LAND-USE ; PROFICIENCY ; LEAVES
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000348318100005
出版者	SPRINGER
文献子类	Article
出版地	DORDRECHT
EISSN	1573-5036
资助机构	National Natural Science Foundation of China [31470505] ; National Basic Research Program of China [2015CB150802] ; State Key Laboratory of Vegetation and Environmental Change [LVEC-2012kf08]
作者邮箱	lvxiaotao@gmail.com
引用统计	被引频次：52[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/2S10CLM1/25878
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 Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110164, Peoples R China 2.Freschet, Gregoire T.] Swedish Univ Agr Sci, Dept Forest Ecol & Management, S-90183 Umea, Sweden 3.Montpellier SupAgro, UMR Ctr Ecol Fonct & Evolut 5175, F-34293 Montpellier, France 4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Lu, Xiao-Tao,Freschet, Gregoire T.,Kazakou, Elena,et al. Contrasting responses in leaf nutrient-use strategies of two dominant grass species along a 30-yr temperate steppe grazing exclusion chronosequence[J]. PLANT AND SOIL,2015,387(1-2):69-79.
APA	Lu, Xiao-Tao,Freschet, Gregoire T.,Kazakou, Elena,Wang, Zheng-Wen,Zhou, Li-Shi,&Han, Xing-Guo.(2015).Contrasting responses in leaf nutrient-use strategies of two dominant grass species along a 30-yr temperate steppe grazing exclusion chronosequence.PLANT AND SOIL,387(1-2),69-79.
MLA	Lu, Xiao-Tao,et al."Contrasting responses in leaf nutrient-use strategies of two dominant grass species along a 30-yr temperate steppe grazing exclusion chronosequence".PLANT AND SOIL 387.1-2(2015):69-79.

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