Knowledge Management System Of Institute Of Botany,CAS
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 |
ISSN | 1470-160X |
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 |
DOI | 10.1016/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 |
EISSN | 1872-7034 |
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 | |
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 |
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). |
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