Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3389/fpls.2018.00338 |
Groundwater Depth Affects Phosphorus But Not Carbon and Nitrogen Concentrations of a Desert Phreatophyte in Northwest China | |
Zhang, Bo1,2,3,4; Gao, Xiaopeng1,2,3,5; Li, Lei1,2,3; Lu, Yan1,2,3; Shareef, Muhammad1,2,3,4; Huang, Caibian1,2,3; Liu, Guojun1,2,3; Gui, Dongwei1,2,3; Zeng, Fanjiang1,2,3 | |
通讯作者 | Zeng, Fanjiang |
来源期刊 | FRONTIERS IN PLANT SCIENCE |
ISSN | 1664-462X |
出版年 | 2018 |
卷号 | 9 |
英文摘要 | Ecological stoichiometry is an important aspect in the analysis of the changes in ecological system composition, structure, and function and understanding of plant adaptation in habitats. Leaf carbon (C), nitrogen (N), and phosphorus (P) concentrations in desert phreatophytes can be affected by different depths of groundwater through its effect on the adsorption and utilization of nutrient and plant biomass. We examined the biomass, soil organic C, available (mineral) N, and available P, and leaf C, N, and P concentrations of Alhagi sparsifolia grown at varying groundwater depths of 2.5, 4.5, and 11.0 m in 2015 and 2016 growing seasons in a desert-oasis ecotone in northwest China. The biomass of A. sparsifolia and the C, N, and P concentrations in soil and A. sparsifolia showed different responses to various groundwater depths. The leaf P concentration of A. sparsifolia was lower at 4.5 m than at 2.5 and 11.0 m likely because of a biomass dilution effect. By contrast, leaf C and N concentrations were generally unaffected by groundwater depth, thereby confirming that C and N accumulations in A. sparsifolia were predominantly determined by C fixation through the photosynthesis and biological fixation of atmospheric N-2, respectively. Soil C, N, and P concentrations at 4.5 m were significantly lower than those at 11.0 m. Leaf P concentration was significantly and positively correlated with soil N concentration at all of the groundwater depths. The C:N and C:P mass ratios of A. sparsifolia at 4.5 m were higher than those at the other groundwater depths, suggesting a defensive life history strategy. Conversely, A. sparsifolia likely adopted a competitive strategy at 2.5 and 11.0 m as indicated by the low C:N and C:P mass ratios. To our knowledge, this study is the first to elucidate the variation in the C, N, and P stoichiometry of a desert phreatophyte at different groundwater depths in an arid ecosystem. |
英文关键词 | ecological stoichiometry desert phreatophyte Alhagi sparsifolia groundwater depth leguminous plant plant growth strategy |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China ; Canada |
收录类别 | SCI-E |
WOS记录号 | WOS:000427502700001 |
WOS关键词 | ALHAGI-SPARSIFOLIA SHAP. ; N-P STOICHIOMETRY ; WATER-USE EFFICIENCY ; LEAF NITROGEN ; SUBMERSED MACROPHYTES ; SOUTHERN FRINGE ; ROOT-GROWTH ; PLANT ; RESPONSES ; LIMITATION |
WOS类目 | Plant Sciences |
WOS研究方向 | Plant Sciences |
来源机构 | 中国科学院新疆生态与地理研究所 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/209467 |
作者单位 | 1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi, Peoples R China; 2.Cele Natl Stn Observat & Res Desert Grassland Eco, Cele, Peoples R China; 3.Chinese Acad Sci, Key Lab Biogeog & Bioresource Arid Zone, Urumqi, Peoples R China; 4.Univ Chinese Acad Sci, Beijing, Peoples R China; 5.Univ Manitoba, Dept Soil Sci, Winnipeg, MB, Canada |
推荐引用方式 GB/T 7714 | Zhang, Bo,Gao, Xiaopeng,Li, Lei,et al. Groundwater Depth Affects Phosphorus But Not Carbon and Nitrogen Concentrations of a Desert Phreatophyte in Northwest China[J]. 中国科学院新疆生态与地理研究所,2018,9. |
APA | Zhang, Bo.,Gao, Xiaopeng.,Li, Lei.,Lu, Yan.,Shareef, Muhammad.,...&Zeng, Fanjiang.(2018).Groundwater Depth Affects Phosphorus But Not Carbon and Nitrogen Concentrations of a Desert Phreatophyte in Northwest China.FRONTIERS IN PLANT SCIENCE,9. |
MLA | Zhang, Bo,et al."Groundwater Depth Affects Phosphorus But Not Carbon and Nitrogen Concentrations of a Desert Phreatophyte in Northwest China".FRONTIERS IN PLANT SCIENCE 9(2018). |
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