气候变化领域集成服务门户(CCPortal): Groundwater Depths Affect Phosphorus and Potassium Resorption but Not Their Utilization in a Desert Phreatophyte in Its Hyper-Arid Environment

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DOI	10.3389/fpls.2021.665168
	Groundwater Depths Affect Phosphorus and Potassium Resorption but Not Their Utilization in a Desert Phreatophyte in Its Hyper-Arid Environment
	Zhang, Bo; Tang, Gangliang; Yin, Hui; Zhao, Shenglong; Shareef, Muhammad; Liu, Bo; Gao, Xiaopeng; Zeng, Fanjiang
通讯作者	Zhang, B ; Zeng, FJ (通讯作者)，Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang Key Lab Desert Plant Roots Ecol & Vegeta, Urumqi, Peoples R China. ; Zhang, B (通讯作者)，Chinese Acad Sci, Natl Engn Technol Res Ctr Desert Oasis Ecol Const, Xinjiang Inst Ecol & Geog, Urumqi, Peoples R China. ; Zhang, B ; Zeng, FJ (通讯作者)，Cele Natl Stn Observat & Res Desert Grassland Eco, Cele, Xinjiang, Peoples R China. ; Zeng, FJ (通讯作者)，Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi, Peoples R China.
发表日期	2021
ISSN	1664-462X
卷号	12
英文摘要	Nutrients are vital for plant subsistence and growth in nutrient-poor and arid ecosystems. The deep roots of phreatophytic plants are necessary to access groundwater, which is the major source of nutrients for phreatophytes in an arid desert ecosystem. However, the mechanisms through which changes in groundwater depth affect nutrient cycles of phreatophytic plants are still poorly understood. This study was performed to reveal the adaptive strategies involving the nutrient use efficiency (NUE) and nutrient resorption efficiency (NRE) of desert phreatophytes as affected by different groundwater depths. This work investigated the nitrogen (N), phosphorus (P), and potassium (K) concentrations in leaf, stem, and assimilating branch, as well as the NUE and NRE of the phreatophytic Alhagi sparsifolia. The plant was grown at groundwater depths of 2.5, 4.5, and 11.0 m during 2015 and 2016 in a desert-oasis transition ecotone at the southern rim of the Taklimakan Desert in northwestern China. Results show that the leaf, stem, and assimilating branch P concentrations of A. sparsifolia at 4.5 m groundwater depth were significantly lower than those at 2.5 and 11.0 m groundwater depths. The K concentrations in different tissues of A. sparsifolia at 4.5 m groundwater depth were significantly higher than those at 2.5 and 11.0 m groundwater depths. Conversely, the NRE of P in A. sparsifolia was the highest among the three groundwater depths, while that of K in A. sparsifolia was the lowest among the three groundwater depths in 2015 and 2016. The N concentration and NUE of N, P, and K in A. sparsifolia, however, were not influenced by groundwater depth. Further analyses using structural equation models showed that groundwater depth had significant effects on the P and K resorption of A. sparsifolia by changing soil P and senescent leaf K concentrations. Overall, our results suggest groundwater depths affect P and K concentrations and resorption but not their utilization in a desert phreatophyte in its hyper-arid environment. This study provides a new insight into the phreatophytic plant nutrient cycle strategy under a changing external environment in a hyper-arid ecosystem.
关键词	NITROGEN-USE-EFFICIENCY ALHAGI-SPARSIFOLIA SHAP.NUTRIENT RESORPTION SEMIARID GRASSLAND FUNCTIONAL-GROUPS RESPONSES PLANT WATER LEAVES PATTERNS
英文关键词	nutrient resorption; Alhagi sparsifolia; groundwater table; internal nutrient cycling; desert ecosystem
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:000663833700001
来源期刊	FRONTIERS IN PLANT SCIENCE
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/255139
作者单位	[Zhang, Bo; Tang, Gangliang; Yin, Hui; Shareef, Muhammad; Zeng, Fanjiang] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang Key Lab Desert Plant Roots Ecol & Vegeta, Urumqi, Peoples R China; [Zhang, Bo] Chinese Acad Sci, Natl Engn Technol Res Ctr Desert Oasis Ecol Const, Xinjiang Inst Ecol & Geog, Urumqi, Peoples R China; [Zhang, Bo; Tang, Gangliang; Yin, Hui; Shareef, Muhammad; Zeng, Fanjiang] Cele Natl Stn Observat & Res Desert Grassland Eco, Cele, Xinjiang, Peoples R China; [Zhao, Shenglong] Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou, Peoples R China; [Liu, Bo] Linyi Univ, Coll Resources & Environm, Linyi, Shandong, Peoples R China; [Gao, Xiaopeng] Univ Manitoba, Dept Soil Sci, Winnipeg, MB, Canada; [Zeng, Fanjiang] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Bo,Tang, Gangliang,Yin, Hui,et al. Groundwater Depths Affect Phosphorus and Potassium Resorption but Not Their Utilization in a Desert Phreatophyte in Its Hyper-Arid Environment[J]. 中国科学院西北生态环境资源研究院,2021,12.
APA	Zhang, Bo.,Tang, Gangliang.,Yin, Hui.,Zhao, Shenglong.,Shareef, Muhammad.,...&Zeng, Fanjiang.(2021).Groundwater Depths Affect Phosphorus and Potassium Resorption but Not Their Utilization in a Desert Phreatophyte in Its Hyper-Arid Environment.FRONTIERS IN PLANT SCIENCE,12.
MLA	Zhang, Bo,et al."Groundwater Depths Affect Phosphorus and Potassium Resorption but Not Their Utilization in a Desert Phreatophyte in Its Hyper-Arid Environment".FRONTIERS IN PLANT SCIENCE 12(2021).