Temporal variation of water-use efficiency and water sources of Phragmites australis in the coastal wetland: Based on stable isotopic composition (d(13)C and d???????O-18)

doi:10.1016/j.ecolind.2022.108957

	Temporal variation of water-use efficiency and water sources of Phragmites australis in the coastal wetland: Based on stable isotopic composition (d(13)C and d???????O-18)
	Zhang, Liwen1,2 ; Lan, Siqun 2,3; Zhao, Lianjun 2,3; Yi, Huapeng 3; Han, Guangxuan2,4
发表期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
	2022-06-01
卷号	139 页码:8
关键词	Common reed Water use Water stress Salt marsh Precipitation Yellow River Delta
DOI	10.1016/j.ecolind.2022.108957
通讯作者	Zhang, Liwen([email protected]) ; Han, Guangxuan([email protected])
英文摘要	Water-use characteristics are important aspects of plant adaptation to environmental factors. While water-use efficiency (WUE) and water sources used by plants in arid habitats are commonly studied, water-use strategies of plants in coastal wetlands are poorly studied. Although ample water is available in coastal wetlands, water conditions vary among seasons, suggesting that the plant in coastal wetlands may need to adapt to seasonal changes in water availability. To uncover temporal variation in plant water-use strategies in the coastal wetland, we investigated WUE and water sources used by Phragmites australis in the tidal marsh of the Yellow River Delta employing stable isotopic composition indicators. Temporal variation of delta C-13 and delta O-18 in leaf organic matter were measured in two years (2018 and 2019) along with plant traits and environmental factors, to determine the factors affecting delta C-13 and delta O-18 in leaf organic matter. Water sources (rainfall, soil water in different depths, tidal water, and groundwater) were sampled for delta O-18 composition in the early growth season (2019 May, June, and July) to determine water sources using the Bayesian mixing model MixSIAR. We found that P. australis had high WUE in spring and autumn, but WUE declined during summer. Changes in WUE were explained by variation in plant height, leaf nutrient concentrations (C: N, total N, total S), leaf traits (leaf length and leaf number), soil electronic conductivity (EC), soil pH, soil nutrients (NO3-N at 0-30 cm soil depth, total S at 0-30 cm soil depth, available P at the soil depths of 0-10 cm and 40-50 cm, and total C at the 30-40 cm soil depth). Spring drought may enhance WUE through increasing soil salinity (i.e., EC) and lowering pH. Water uptake in the early growth season was composed mainly of rainfall, soil water, and groundwater. However, tidal water (i.e., ocean water) was not a main water source. To sum up, leaf WUE varied with seasons in the coastal wetland, which may be related to plant traits and soil factors, particularly salinity and pH. The plant in the tidal marsh may not take up ocean water, even though it is really abundant. Precipitation is still an important water source promoting growth of these plants in the coastal wetland, therefore, to conserve them, supplementing fresh water in the drought season is suggested.
资助机构	National Natural Science Foundation of China ; Youth Innovation Promotion As-sociation CAS
收录类别	SCI
语种	英语
关键词[WOS]	STOMATAL CONDUCTANCE ; SEASONAL-VARIATIONS ; CARBON ; PLANT ; LEAF ; DROUGHT ; DISCRIMINATION ; RESPONSES ; ECOSYSTEM ; DEPTH
研究领域[WOS]	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS记录号	WOS:000804539200003
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/37542
专题	中国科学院海岸带环境过程与生态修复重点实验室中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室支撑部门_中国科学院黄河三角洲滨海湿地试验站
通讯作者	Zhang, Liwen; Han, Guangxuan
作者单位	1.Tianjin Normal Univ, Coll Life Sci, Tianjin Key Lab Anim & Plant Resistance, Tianjin 300387, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Key Lab Coastal Environm Proc,YICCAS,Yell, Yantai 264003, Shandong, Peoples R China 3.Ludong Univ, Sch Resources & Environm Engn, Yantai 264025, Shandong, Peoples R China 4.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Liwen,Lan, Siqun,Zhao, Lianjun,et al. Temporal variation of water-use efficiency and water sources of Phragmites australis in the coastal wetland: Based on stable isotopic composition (d(13)C and d???????O-18)[J]. ECOLOGICAL INDICATORS,2022,139:8.
APA	Zhang, Liwen,Lan, Siqun,Zhao, Lianjun,Yi, Huapeng,&Han, Guangxuan.(2022).Temporal variation of water-use efficiency and water sources of Phragmites australis in the coastal wetland: Based on stable isotopic composition (d(13)C and d???????O-18).ECOLOGICAL INDICATORS,139,8.
MLA	Zhang, Liwen,et al."Temporal variation of water-use efficiency and water sources of Phragmites australis in the coastal wetland: Based on stable isotopic composition (d(13)C and d???????O-18)".ECOLOGICAL INDICATORS 139(2022):8.