Soil water and root distribution under jujube plantations in the semiarid Loess Plateau region, China

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• 作者：Xing Wang ; Delan Zhu ; Youke Wang ; Xindong Wei ; Lihui Ma
• 关键词：Jujube plantation ; Root depth ; Soil water content ; Hilly Loess Region
• 刊名：Plant Growth Regulation
• 出版年：2015
• 出版时间：September 2015
• 年：2015
• 卷：77
• 期：1
• 页码：21-31
• 全文大小：1,672 KB
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• 作者单位：Xing Wang (1)
  Delan Zhu (1)
  Youke Wang (1) (2) (3)
  Xindong Wei (1) (4)
  Lihui Ma (2) (3)
  
  1. College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
  2. Institute of Soil and Water Conservation, Northwest A&F University, Yangling, 712100, Shaanxi, China
  3. Institute of Soil and Water Conservation, CAS and MWR, Yangling, 712100, Shaanxi, China
  4. College of Earth Science and Resources, Chang’an University, Xi’an, 710054, Shaanxi, China
  
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Plant Physiology
  
• 出版者：Springer Netherlands
• ISSN：1573-5087

文摘

This study aimed to analyze the spatial correlation between soil water and root distribution in dense-dwarf jujube plantations in the Hilly Loess Region (HLR) of China. The soil coring method was used to sample roots at different depths within the 0-,000?cm soil profile. The results showed that increase in average annual root depth decreased with increasing jujube stand age. The maximum root depth of the 12-year-old jujube was 520?cm. The difference between the maximum and minimum root depths in the 12-year-old jujube trees was 180?cm. Lateral roots started developing intersection networks 3?years after planting. Soil water fluctuation was not induced by vertical root systems of dense-dwarf jujube plants. With increasing jujube stand age, root depth, dry soil layer depth (below 240?cm) and annual soil water variance within the top 0-00?cm soil layer increased. However, root-zone soil water content decreased with increasing stand age while dry soil layer depth was slightly larger than root depth. The results of this study have important significance to provide vital technical support for jujube cultivation especially under semiarid conditions and were expected to find application in water management for plantations in the HLR.