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Varied nitrogen versus phosphorus scaling exponents among shrub organs across eastern China
Zhao, Mengying1; Luo, Yongkai; Chen, Yahan; Shen, Haihua1; Zhao, Xia; Fang, Jingyun2,3; Hu, Huifeng
2021
发表期刊ECOLOGICAL INDICATORS
ISSN1470-160X
卷号121
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.
关键词Nutrient allocation Organs Scaling exponent Shrubs Ecological stoichiometry
学科领域Biodiversity Conservation ; Environmental Sciences
DOI10.1016/j.ecolind.2020.107024
收录类别SCI
语种英语
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)
WOS记录号WOS:000604892800002
出版者ELSEVIER
文献子类Article
出版地AMSTERDAM
EISSN1872-7034
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]
作者邮箱huifhu@ibcas.ac.cn
作品OA属性gold
引用统计
被引频次:10[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/2S10CLM1/26575
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 Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Peking Univ, Coll Urban & Environm Sci, Inst Ecol, Beijing 100871, Peoples R China
4.Peking Univ, Key Lab Earth Surface Proc, Minist Educ, Beijing 100871, Peoples R China
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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).
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