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Varied nitrogen versus phosphorus scaling exponents among shrub organs across eastern China

文献类型：期刊论文

作者Zhao, Mengying3; Luo, Yongkai; Chen, Yahan; Shen, Haihua3; Zhao, Xia; Fang, Jingyun1,2; Hu, Huifeng
刊名ECOLOGICAL INDICATORS
出版日期2021
卷号121
关键词Nutrient allocation Organs Scaling exponent Shrubs Ecological stoichiometry
ISSN号1470-160X
DOI10.1016/j.ecolind.2020.107024
文献子类Article
英文摘要The nitrogen (N) vs. phosphorus (P) scaling exponent, which reflects the trade-off between N and P investment, is an important parameter for predicting plant growth and vegetation productivity. Previous studies mainly focused on a single metabolic organ, and the difference in scaling exponents among different organs was insufficiently discussed. We systematically sampled 1532 shrub individuals grown under two habitats from 13 forest sites across eastern China, and measured the nutrient concentrations of different organs to explore the characteristics of the N vs. P scaling exponents and the underlying influencing factors. The N vs. P scaling exponents varied among shrub organs. Plant functional groups (PFGs), climate zones, soil nutrient status and habitats significantly affected the N vs. P scaling exponents. The N vs. P scaling exponents of stems and coarse roots for deciduous, legume and typical shrubs were higher than those of evergreen, non-legumes and understory shrubs, respectively, and were lower in tropical region than in other regions. Stems and coarse roots showed a resistant response to nutrient limitation and a compliant response to high nutrient availability. The N vs. P scaling exponents of leaves and fine roots were not affected by PFGs and were mainly controlled by soil P and N availability, respectively. Our results suggest that these variations in the N vs. P scaling exponents and their influencing factors among different plant organs should be considered when these exponents are used in stoichiometric growth models. These results advance our understanding of plant nutrient allocation strategy in response to functional groups and environmental changes.
学科主题Biodiversity Conservation ; Environmental Sciences
出版地AMSTERDAM
电子版国际标准刊号1872-7034
WOS关键词N-P RATIOS ; LEAF NITROGEN ; PLANT-GROWTH ; ALLOCATION STRATEGIES ; NUTRIENT LIMITATION ; WOODY-PLANTS ; FINE ROOTS ; STOICHIOMETRY ; LEAVES ; SOIL
WOS研究方向Science Citation Index Expanded (SCI-EXPANDED)
语种英语
WOS记录号WOS:000604892800002
出版者ELSEVIER
资助机构National Natural Science Foundation of China [31470498] ; National Key Research and Development Program [2015CB954200] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA05050700, XDA05050600]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/26575]  
专题植被与环境变化国家重点实验室
作者单位1.Peking Univ, Coll Urban & Environm Sci, Inst Ecol, Beijing 100871, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
4.Peking Univ, Key Lab Earth Surface Proc, Minist Educ, Beijing 100871, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Mengying,Luo, Yongkai,Chen, Yahan,et al. Varied nitrogen versus phosphorus scaling exponents among shrub organs across eastern China[J]. ECOLOGICAL INDICATORS,2021,121.
APA Zhao, Mengying.,Luo, Yongkai.,Chen, Yahan.,Shen, Haihua.,Zhao, Xia.,...&Hu, Huifeng.(2021).Varied nitrogen versus phosphorus scaling exponents among shrub organs across eastern China.ECOLOGICAL INDICATORS,121.
MLA Zhao, Mengying,et al."Varied nitrogen versus phosphorus scaling exponents among shrub organs across eastern China".ECOLOGICAL INDICATORS 121(2021).

入库方式： OAI收割

来源：植物研究所

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