Variability in groundwater depth and composition and their impacts on vegetation succession in the lower Heihe River Basin, north-western China | |
Zhu, JunTao(朱军涛) ; Yu, JJ ; Wang, P ; Yu, Q ; Eamus, D | |
刊名 | MARINE AND FRESHWATER RESEARCH
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2014 | |
卷号 | 65期号:3页码:206-217 |
关键词 | canonical correspondence analysis (CCA) groundwater heterogeneity semi-variogram. |
通讯作者 | Zhu, JunTao(朱军涛) |
英文摘要 | 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. |
收录类别 | SCI |
资助信息 | National Youth Natural Science Foundation of China 41101056;National Natural Science Foundation Project of China 91025023;National Basic Research Program of China 2009CB421305;Postdoctoral Science Foundation of China 20110490571 |
公开日期 | 2014-04-03 |
内容类型 | 期刊论文 |
源URL | [http://ir.igsnrr.ac.cn/handle/311030/28755] ![]() |
专题 | 地理科学与资源研究所_研究生部 |
推荐引用方式 GB/T 7714 | Zhu, JunTao,Yu, JJ,Wang, P,et al. Variability in groundwater depth and composition and their impacts on vegetation succession in the lower Heihe River Basin, north-western China[J]. MARINE AND FRESHWATER RESEARCH,2014,65(3):206-217. |
APA | Zhu, JunTao,Yu, JJ,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(3),206-217. |
MLA | Zhu, JunTao,et al."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 65.3(2014):206-217. |
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