Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jaridenv.2015.07.002 |
Leaf nitrogen is closely coupled to phenophases in a desert shrub ecosystem in China | |
Chen, Zhi-Hao1; Zha, Tianshan1; Jia, Xin1; Wu, Yajuan1; Wu, Bin1; Zhang, Yuqing1; Guo, JianBin1; Qin, ShuGao1; Chen, Guopeng2; Peltola, Heli3 | |
通讯作者 | Zha, Tianshan |
来源期刊 | JOURNAL OF ARID ENVIRONMENTS
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ISSN | 0140-1963 |
EISSN | 1095-922X |
出版年 | 2015 |
卷号 | 122页码:124-131 |
英文摘要 | The understanding of the seasonal dynamics of leaf nitrogen (N) relative to leaf traits for desert shrub species is limited. We investigated the seasonal changes in leaf N, soil N, specific leaf area (SLA) and photosynthetic capacity (P-max) in relation to the phenology of Artemisia ordosica in a desert shrubland area in northern China during the growing season of year 2012. We found that the amount of leaf N per unit dry mass varied in different phenological phases, having higher values during the early leaf expansion and leaf coloration and early defoliation periods and lower values during the expanded leaf and flowering periods. P-max was positively related to leaf N from the late leaf expansion period to the flowering and bearing period. Photosynthetic nitrogen use efficiency (NUE) correlated with SLA during the growing period. However, similar relationships were not observed for the leaf expansion and defoliation periods. During the flowering and bearing period, leaf N content per unit dry mass remained relatively stable, although fluctuations occurred due to precipitation. Our findings could help with modelling the dynamics of plant-soil N coupling of desert shrub-land ecosystems under changing environment. (C) 2015 Elsevier Ltd. All rights reserved. |
英文关键词 | Artemisia ordosica Arid and semi-arid region Phenology Photosynthetic capacity Specific leaf area Leaf nitrogen |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China ; Finland |
收录类别 | SCI-E |
WOS记录号 | WOS:000359170000014 |
WOS关键词 | GAS-EXCHANGE CHARACTERISTICS ; USE EFFICIENCY ; PHOTOSYNTHETIC CAPACITY ; PRECIPITATION GRADIENT ; SEASONAL-VARIATIONS ; CELL-WALLS ; WATER-USE ; PLANT ; RESPONSES ; AREA |
WOS类目 | Ecology ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
来源机构 | 北京林业大学 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/188364 |
作者单位 | 1.Beijing Forestry Univ, Sch Soil & Water Conservat, Yanchi Res Stn, Beijing, Peoples R China; 2.Bailongjiang Forestry Management Bur Gansu Prov, Inst Forestry Sci, Gannan, Peoples R China; 3.Univ Eastern Finland, Sch Forest Sci, Fac Sci & Forestry, FI-80101 Joensuu, Finland |
推荐引用方式 GB/T 7714 | Chen, Zhi-Hao,Zha, Tianshan,Jia, Xin,et al. Leaf nitrogen is closely coupled to phenophases in a desert shrub ecosystem in China[J]. 北京林业大学,2015,122:124-131. |
APA | Chen, Zhi-Hao.,Zha, Tianshan.,Jia, Xin.,Wu, Yajuan.,Wu, Bin.,...&Peltola, Heli.(2015).Leaf nitrogen is closely coupled to phenophases in a desert shrub ecosystem in China.JOURNAL OF ARID ENVIRONMENTS,122,124-131. |
MLA | Chen, Zhi-Hao,et al."Leaf nitrogen is closely coupled to phenophases in a desert shrub ecosystem in China".JOURNAL OF ARID ENVIRONMENTS 122(2015):124-131. |
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