干旱区生态环境知识资源中心(Arid): Patterns of foliar and soil nitrogen isotope composition of Caragana microphylla, a leguminous shrub species in the semi-arid regions of northern China

Arid

DOI	10.1007/s10533-019-00617-x
	Patterns of foliar and soil nitrogen isotope composition of Caragana microphylla, a leguminous shrub species in the semi-arid regions of northern China
	Ma, Fei 1; Zhou, Zhaona 4; Li, Shanlong 2; Ai, Zhe 4; Xiao, GuoJu 1; Jia, Yanlong 5; Xu, Tingting 3; Denton, Matthew D.6
通讯作者	Xu, Tingting
来源期刊	BIOGEOCHEMISTRY
ISSN	0168-2563
EISSN	1573-515X
出版年	2019
卷号	146 期号:3 页码:257-269
英文摘要	Variation in foliar and soil nitrogen (N) isotope composition (delta N-15) across environmental gradients has been widely studied at various scales. However, much less is known about the patterns of N-2-fixing species that are presumed to be independent of climatic factors due to their capacity to fix atmospheric N-2. In this study, the foliar and soil delta N-15 in Caragana microphylla, a leguminous shrub important for its role in controlling soil erosion and land desertification in northern China, were determined from 23 sites along an east-west transect across the species distribution range. The soil delta N-15 tended to be significantly higher than the foliar delta N-15 and there was a positive correlation between them (r(2) = 0.58, p < 0.0001), though substantial variability was found in foliar and soil delta N-15 across all sites. Both soil and foliar delta N-15 were negatively correlated with precipitation, temperature, dry N deposition (DND) and longitude, but positively correlated with foliar N, soil N and altitude. The structural equation modeling further suggested growing season precipitation indirectly influenced foliar delta N-15 by its direct impact on soil delta N-15 and by its indirect impact on soil delta N-15 via DND and total N deposition (TND), whereas growing season temperature affected foliar delta N-15 indirectly both by its effect on foliar N and by its effect on soil delta N-15 via WND, TND and foliar N. Altogether, our results indicated that foliar delta N-15 also shifted along environmental gradients in leguminous plant species and showed primary dependence on soil delta N-15, confirming previous findings in non-leguminous plants. These results augment our common understanding of foliar and soil delta N-15 patterns across climatic gradients in plants.
英文关键词	Caragana microphylla Foliar delta N-15 Legume Precipitation Soil delta N-15 Temperature
类型	Article
语种	英语
国家	Peoples R China ; Australia
收录类别	SCI-E
WOS记录号	WOS:000499420000001
WOS关键词	N-15 NATURAL-ABUNDANCE ; GLOBAL PATTERNS ; PLANT NITROGEN ; STABLE CARBON ; LEAF NITROGEN ; DELTA-N-15 ; AVAILABILITY ; DELTA-C-13 ; GRADIENT ; PLATEAU
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary
WOS研究方向	Environmental Sciences & Ecology ; Geology
EI主题词	2019-11-29
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311019
作者单位	1.Ningxia Univ, Inst Environm Engineer, Yinchuan 750021, Peoples R China; 2.Chinese Acad Sci, Key Lab Forest Ecol & Management, Inst Appl Ecol, Shenyang 110016, Liaoning, Peoples R China; 3.Ningxia Univ, Sch Life Sci, Yinchuan 750021, Peoples R China; 4.Ningxia Univ, Coll Resources & Environm Sci, Yinchuan 750021, Peoples R China; 5.Hebei Agr Univ, Coll Forestry, Baoding 071001, Peoples R China; 6.Univ Adelaide South Australia, Sch Agr Food & Wine, Adelaide, SA 5064, Australia
推荐引用方式 GB/T 7714	Ma, Fei,Zhou, Zhaona,Li, Shanlong,et al. Patterns of foliar and soil nitrogen isotope composition of Caragana microphylla, a leguminous shrub species in the semi-arid regions of northern China[J],2019,146(3):257-269.
APA	Ma, Fei.,Zhou, Zhaona.,Li, Shanlong.,Ai, Zhe.,Xiao, GuoJu.,...&Denton, Matthew D..(2019).Patterns of foliar and soil nitrogen isotope composition of Caragana microphylla, a leguminous shrub species in the semi-arid regions of northern China.BIOGEOCHEMISTRY,146(3),257-269.
MLA	Ma, Fei,et al."Patterns of foliar and soil nitrogen isotope composition of Caragana microphylla, a leguminous shrub species in the semi-arid regions of northern China".BIOGEOCHEMISTRY 146.3(2019):257-269.