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Variability in groundwater depth and composition and their impacts on vegetation succession in the lower Heihe River Basin, north-western China

作者：

Zhu, J. T. 【所有文章和数据】
Yu, J. J. 【所有文章和数据】
Wang, P. 【所有文章和数据】
Yu, Q. 【所有文章和数据】
Eamus, D. . 【所有文章和数据】

引用方式

Zhu, J. T. , Yu, J. J. , Wang, P. , Yu, Q. , & Eamus, D. . (2014). Variability in groundwater depth and composition and their impacts on vegetation succession in the lower heihe river basin, north-western china. Marine and Freshwater Research, 65.

文献信息
Type Of Reference	JOUR
Title	Variability in groundwater depth and composition and their impacts on vegetation succession in the lower Heihe River Basin, north-western China
Authors	Zhu, JunTao\| Yu, JingJie\| Wang, Ping\| Yu, Qiang\| Eamus, Derek\|
Secondary Title	Marine and Freshwater Research
Abstract	Plant-community structure and groundwater attributes were investigated in Ejina Delta in north-western China to understand spatial variability of groundwater depth and composition and their impacts on vegetation succession. Geostatistical methods and ordination analysis were performed to analyse the data. In addition, we tried to obtain vegetation successional series by using an approach of spatial sequences instead of temporal sequences. The findings of the present study were as follows: (1) the coefficient of variation for groundwater depth (GWD), salinity (SAL), total dissolved solids (TDS), electrical conductivity (EC), pH, Ca2+, Mg2+, K+, Na+, SO42–, HCO3–, NO3–, Cl– and F– ranged from 0.04 to 1.53; (2) GWD, Mg2+, TDS, EC, Ca2+, HCO3–, NO3– and pH showed strong spatial autocorrelation, whereas K+ and SAL showed moderate spatial autocorrelation; (3) canonical correspondence analysis revealed that groundwater heterogeneity, especially GWD, followed by pH, SAL, TDS, EC and HCO3–, had an important impact on vegetation succession, and thus showed a prevalence of groundwater attributes-based niche differentiation among plant communities; and (4) there were two vegetation successional processes (drought and salinisation) in the lower Heihe River Basin, and salinisation processes increased with drought processes. Our results indicated that high spatial variability of groundwater attributes contributes to promoting maintenance of species and landscape diversity in the lower Heihe River Basin.
Date	2014///
Year	2014
Database Provider	CSIRO Publishing
volume	65
Issue Number	3
Start Page	206
Alternate Title1	Mar. Freshwater Res.
Url	http://dx.doi.org/10.1071/MF13082
Access Date	2014/05/22/12:15:01
Keywords	canonical correspondence analysis (CCA)\| groundwater heterogeneity\| semi-variogram.\|
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