LI Bai,GAO Jia-rong,CUI Qiang,et al.Water-Blocking Properties Analysis of Biological Crust under the Artemisia ordosica, Hedysarun mongdicum Turcz Var and Hedysarum scoparium——Taking Yanchi County as Example[J].Research of Soil and Water Conservation,2011,18(04):136-139.
油蒿、羊柴和花棒下生物结皮阻水特性分析——以宁夏盐池县为例
- Title:
- Water-Blocking Properties Analysis of Biological Crust under the Artemisia ordosica, Hedysarun mongdicum Turcz Var and Hedysarum scoparium——Taking Yanchi County as Example
- Keywords:
- biological crust; desertification; water resistance; moisture
- 分类号:
- S154;S152.7
- 摘要:
- 生物结皮作为沙丘固定的明显标志，影响着沙土水分的变化特征，生物结皮的研究对我国荒漠化地区植被的合理配置、稳定性有着重要的意义。实验于2010年7月中旬进行，以宁夏盐池县沙泉湾生态实验站为实验地，采用随机取样的方法，布设16块样地，在样地内进行植被调查，测量植被和生物结皮盖度、生物结皮厚度以及植被高度和冠幅，运用人工降雨的方法，对油蒿、羊柴和花棒下方生物结皮阻水特性进行比较。结果表明：不同植被覆盖下生物结皮厚度表现为：花棒>羊柴>油蒿。在有植被条件下和在裸地条件下，以及在油蒿、羊柴和花棒下方生物结皮阻水特性表现为：花棒>羊柴>裸地>油蒿。通过对不同植被覆盖下生物结皮阻水特性的研究，总结出生物结皮阻水特性的规律，对当地植被的恢复、营造，以及合理放牧都有重要影响。
- Abstract:
- The biological crust as a clear sign of the dunes fixed, affects sand moisture variation features. And research on the biological crust on the vegetation of desertification areas rational allocation and stability has an important significance. The experiment was conducted in mid-July 2010 in Shaquanwan ecological experimental station, Yanchi country, Ningxia Hui Autonomous Region. The experiment used random sampling method to lay out 16 samples, within the vegetation investigation, and then measuring the vegetation and biological crust coverage, the biological thickness and the vegetation height and canopy widths. Artificial rainfall method was used to compare water blocking properties of crusts. The results indicate that the biological crust thickness under different vegetation coverage performance that:Hedysarum scoparium>Hedysarun mongdicum Turcz Var>Artemisia ordosica. Conditions in the vegetation and in bare conditions, biological crust water blocking properties showed as:Hedysarum scoparium>Hedysarun mongdicum Turcz Var>bare conditions>Artemisia ordosica. According to the research of water blocking properties of biological crust under different vegetation, the law of water blocking properties of biological crust was summarized. It has a significant impact on the restoration and construction of the local vegetation and the reasonable graze.
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备注/Memo
收稿日期:2010-12-8;改回日期:2011-3-2。
基金项目:国际科技合作项目（2008DFA32270）
作者简介:李柏（1986- ），男，辽宁沈阳人，硕士研究生，研究方向：山地灾害防治工程。E-mail：33126421@qq.com
通讯作者:高甲荣（1963- ），男，陕西省韩城县人，教授，研究方向：水土保持。E-mail：jiaronggao@sohu.com