| 毛乌素沙地不同地貌下沙柳根系分布特征研究(英文) |
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| 引用本文： | 杨峰,刘立,王文科,赵贵章,段鹏.毛乌素沙地不同地貌下沙柳根系分布特征研究(英文)[J].Agricultural Science&Technology,2011(7). |
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| 作者姓名： | 杨峰 刘立 王文科 赵贵章 段鹏 |
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| 作者单位： | 长安大学环境科学与工程学院;长安大学电子与控制工程学院; |
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| 基金项目： | Supported by Science and Technology Research Major Project ofthe Ministry of Education (308021); Publicly-Traded Research Pro-ject of the Ministry of Land and Resources (200911004)~~ |
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| 摘 要： | 目的]研究毛乌素沙地不同地貌下沙柳(Salixpsammophila)根系分布特征,揭示干旱地区不同地貌下植物适应机理。方法]利用中子水分仪观测沙丘上和丘间洼地沙柳样地的土壤水分动态,采用挖掘法分别对沙丘和丘间洼地上的沙柳样地进行根系分布的调查研究。结果]在水平方向上,沙丘上沙柳根量呈指数函数减少;丘间洼地的沙柳根量呈乘幂函数减少。在垂直方向上,沙丘上的沙柳根系主要分布在0 ~30和80 ~120 cm的土层范围内,根量占总根量的72%;丘间洼地上的沙柳根系主要分布在0 ~40 cm的土层范围内,根量占总根量的54%。结论]沙丘上沙柳根系不仅利用表层土壤水,而且还利用中层地下水。丘间洼地沙柳根系则以利用表层土壤水为主。
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| 关 键 词： | 毛乌素沙地 挖掘法 土壤水分 根系分布 |
Distribution Characteristics Comparison of Salix Psammophila Roots under Different Landforms in Mu Us Desert |
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| YANG Feng,LIU Li,WANG Wen-ke,ZHAO Gui-zhang,DUAN Peng .College of Environmental Science , Engineering,Chang'an University,Xi'an ,.College of Electronic , Control Engineering.Distribution Characteristics Comparison of Salix Psammophila Roots under Different Landforms in Mu Us Desert[J].农业科学与技术(英文版),2011(7). |
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| Authors: | YANG Feng LIU Li WANG Wen-ke ZHAO Gui-zhang DUAN Peng College of Environmental Science Engineering Chang'an University Xi'an College of Electronic Control Engineering |
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| Institution: | YANG Feng1*,LIU Li2,WANG Wen-ke1,ZHAO Gui-zhang1,DUAN Peng1 1.College of Environmental Science and Engineering,Chang'an University,Xi'an 710054,2.College of Electronic and Control Engineering |
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| Abstract: | Objective] In order to study plant adaptation mechanism under different landforms in drought regions.Method] Observe soil moisture dynamic of Salix psammophila sample areas on the dune and depression with neutron moisture gauge and research the roots distribution of Salix psammophila sample areas on the dune and depression respectively by digging method.Result] The quantity of Salix psammophila roots on the dune exponentially decreases while that on the depression decreases by power function in horizonta... |
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| Keywords: | Mu Us Desert Digging method Soil moisture Roots distribution |
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