Arid
DOI10.1093/jpe/rtw134
Patterns of leaf N:P stoichiometry along climatic gradients in sandy region, north of China
Zhang, Lifang; Wang, Lilong; He, Wenliang; Zhang, Xinfang; An, Lizhe; Xu, Shijian
通讯作者Xu, Shijian
来源期刊JOURNAL OF PLANT ECOLOGY
ISSN1752-9921
EISSN1752-993X
出版年2018
卷号11期号:2页码:218-225
英文摘要

Aims


Biological and environmental factors determine geographic patterns of plant nutrient stoichiometry jointly. Unraveling the distribution pattern and the potential drivers of nutrient stoichiometry is therefore critical for understanding the adaptive strategies and biogeochemistry cycling. Aimed to determine how leaf nitrogen (N):phosphorus (P) stoichiometry is linked to biological and environmental factors, we investigated the patterns of psammophyte leaf N:P stoichiometry in sandy region, northern China, and the potential factors affecting leaf N:P stoichiometry were explored.


Methods


Based on 10 m x 10 m quadrates survey, the leaves of 352 dominant psammophyte samples belonging to 167 species were collected cross a 3000 km east-west transect in sandy environments, northern China. The samples were further classified into the following groups on the basis of plant life forms and functional groups (photosynthesis pathways and nitrogen fixation). The structural equation modeling was employed to clarify the importance of biological and environmental factors on leaf N:P stoichiometry.


Important Findings


Generally, the higher leaf N and P concentrations, but lower N:P ratio were found in psammophyte compared with other ecosystems. Mean annual temperature (MAT) influenced the leaf N, P concentrations negatively, while mean annual precipitation (MAP) did positively. MAP played greater influence on leaf N, P concentrations than MAT did. MAP affected leaf N, P concentrations directly or indirectly through phylogeny, while MAT only shown direct effect on leaf N concentration. The psammophyte was more limited by N, rather P, in sandy region of northern China. These results suggest that phylogeny of psammophyte and climate jointly influence leaf N:P stoichiometry, and the results could be helpful in modeling biogeochemical nutrients cycling in vulnerable ecosystems like sandy environment.


英文关键词N:P stoichiometry psammophyte climatic factors sandy region
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000427134100006
WOS关键词PHOSPHORUS STOICHIOMETRY ; NUTRIENT CONTENT ; NITROGEN ; DESERT ; SOIL ; BIOGEOGRAPHY ; GRASSES ; TRAITS
WOS类目Plant Sciences ; Ecology
WOS研究方向Plant Sciences ; Environmental Sciences & Ecology
来源机构兰州大学
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/211230
作者单位Lanzhou Univ, Sch Life Sci, MOE Key Lab Cell Act & Stress Adaptat, 222 Southern Tianshui Rd, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式
GB/T 7714
Zhang, Lifang,Wang, Lilong,He, Wenliang,et al. Patterns of leaf N:P stoichiometry along climatic gradients in sandy region, north of China[J]. 兰州大学,2018,11(2):218-225.
APA Zhang, Lifang,Wang, Lilong,He, Wenliang,Zhang, Xinfang,An, Lizhe,&Xu, Shijian.(2018).Patterns of leaf N:P stoichiometry along climatic gradients in sandy region, north of China.JOURNAL OF PLANT ECOLOGY,11(2),218-225.
MLA Zhang, Lifang,et al."Patterns of leaf N:P stoichiometry along climatic gradients in sandy region, north of China".JOURNAL OF PLANT ECOLOGY 11.2(2018):218-225.
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