Changes in above and belowground traits of a rhizome clonal plant explain its predominance under nitrogen addition

doi:10.1007/s11104-018-3815-2

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	Changes in above and belowground traits of a rhizome clonal plant explain its predominance under nitrogen addition
	Zheng, Zhi ; Ma, Pengfei 1
刊名	PLANT AND SOIL
	2018
卷号	432 期号:1-2 页码:415-424
关键词	Nitrogen addition Leymus chinensis Plant traits Inner mongolian steppe
ISSN号	0032-079X
DOI	10.1007/s11104-018-3815-2
文献子类	Article
英文摘要	Background and aimsDespite extensive studies documenting that changes in plant community structure in response to enhanced atmospheric nitrogen (N) deposition were driven by positive effects of N enrichment on rhizome clonal plants in grassland communities, few studies have specifically investigated the responses of rhizome clonal plants to N enrichment in terms of above-and below-ground plant traits.MethodsBy monitoring above-ground and below-ground plant traits, we investigated long-term (13-year) effects of N addition (64gm(-2)yr.(-1)) on Leymus chinensis, a rhizome clonal plant, in temperate steppes of northern China.ResultsNitrogen addition enhanced the relative above-ground biomass of L. chinensis from 0.6% (2004) to 75% (2016) in steppe communities. Nitrogen addition enhanced leaf N and chlorophyll concentrations, and specific leaf area, thus leading to a marked increase in photosynthetic rates. Nitrogen addition altered the patterns of carbon allocation, by enhancing the ratios of below-ground to above-ground biomass, while N addition reduced the ratios of rhizome to root biomass. Nitrogen addition modified morphological traits of absorptive fine roots (first two-order roots) by enhancing specific root length and reducing root tissue density and average root diameter. Nitrogen addition significantly shortened rhizome internodes and increased bud density of L. chinensis.ConclusionNitrogen addition enhanced L. chinensis resource-acquiring and vegetative reproduction capability, thereby leading to its predominance in the steppe communities.
学科主题	Agronomy ; Plant Sciences ; Soil Science
电子版国际标准刊号	1573-5036
出版地	DORDRECHT
WOS关键词	RELATIVE GROWTH-RATE ; ECONOMICS SPECTRUM ; COMMUNITY RESPONSES ; PRECIPITATION GRADIENT ; NUTRIENT ENRICHMENT ; ECOSYSTEM PROCESSES ; FUNCTIONAL TRAITS ; GLOBAL ASSESSMENT ; BIODIVERSITY LOSS ; SPECIES RICHNESS
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000447871600028
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31470466]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/20531]
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Tibetan Med Res, Xining 810008, Qinghai, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 10093, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Zhi,Ma, Pengfei. Changes in above and belowground traits of a rhizome clonal plant explain its predominance under nitrogen addition[J]. PLANT AND SOIL,2018,432(1-2):415-424.
APA	Zheng, Zhi,&Ma, Pengfei.(2018).Changes in above and belowground traits of a rhizome clonal plant explain its predominance under nitrogen addition.PLANT AND SOIL,432(1-2),415-424.
MLA	Zheng, Zhi,et al."Changes in above and belowground traits of a rhizome clonal plant explain its predominance under nitrogen addition".PLANT AND SOIL 432.1-2(2018):415-424.