Influence of soil moisture and electrical conductivity on the growth of Phragmites australis (Cav.) in the Keriya oasis, China

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• 作者：Zulpiya Mamat ; Umut Halik ; Polat Muhtar ; Ilyas Nurmamat…
• 关键词：Soil moisture ; EC ; Phragmites australis (Cav.) ; Soil–vegetation relationship ; Keriya oasis
• 刊名：Environmental Earth Sciences
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：75
• 期：5
• 全文大小：553 KB
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• 作者单位：Zulpiya Mamat (1) (2) (3) (4)
  Umut Halik (1) (2) (5)
  Polat Muhtar (6)
  Ilyas Nurmamat (1) (2)
  Abdulla Abliz (1) (2)
  Tayierjiang Aishan (1) (2)
  
  1. College of Resources and Environmental Science, Xinjiang University, Urumqi, 830046, China
  2. Key Laboratory of Oasis Ecology (Ministry of Education), Xinjiang University, Urumqi, 830046, China
  3. Ecological Postdoctoral Research Station, Xinjiang University, Urumqi, 830046, China
  4. Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi, 830011, China
  5. Faculty of Mathematics and Geography, Catholic University of Eichstaett-Ingolstadt, 85071, Eichstaett, Germany
  6. College of Tourism, Xinjiang University, Urumqi, 830046, China
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：None Assigned
• 出版者：Springer Berlin Heidelberg
• ISSN：1866-6299

文摘

In this study, we sought to explore the changes of soil moisture and soil electrical conductivity (EC), as well as to study the relationships between these soil properties and the vegetative indexes of plant coverage, height and crown density and diameter during the Phragmites australis (P. australis) growth period. By combining floristic and edaphic variables (soil moisture and EC), we found that at 0–10 cm depth, the soil moisture varied greatly, while the soil moisture at 10–50 cm depth, EC at 0–50 cm depth, and vegetation properties varied only moderately. A great amount of evaporation offered a possible reason for this moderate variability in soil moisture and EC. Geostatistical analyses revealed that the soil moisture at 0–50 cm depth, and the density of P. australis (Cav.) had a strong spatial autocorrelation, while the EC at 0–50 cm depth had only a weak spatial autocorrelation depending on the nugget effect. Furthermore, there was a positive correlation between the soil moisture and vegetation characteristics at the depth of 0–50 cm, but there was a negative correlation between EC and vegetation characteristics at the depth of 30–50 cm. Furthermore, an increase in soil moisture had a positive effect on P. australis (Cav.) growth, while an increase in EC had a negative effect.