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[1]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.

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Water-Blocking Properties Analysis of Biological Crust under the Artemisia ordosica, Hedysarun mongdicum Turcz Var and Hedysarum scoparium——Taking Yanchi County as Example

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 18 Number of periods: 2011 04 Page number: 136-139 Column: Public date: 2011-08-20

Title:: Water-Blocking Properties Analysis of Biological Crust under the Artemisia ordosica, Hedysarun mongdicum Turcz Var and Hedysarum scoparium——Taking Yanchi County as Example

Author(s):: LI Bai^1,2, GAO Jia-rong¹, CUI Qiang^1,2, QIAN Bin-tian¹, WANG Yue¹, LIU Fa^1,2; 1. Key Lab of Soil and Water Conservation & Desertification Combation of Ministry of Education, Beijing Forestry University, Beijing 100083, China;
2. Ningxia Yanchi Desert Ecosystem ResearchStation of the State Forestry Administration, Beijing Forestry University Yanchi, Ningxia 751500, China

Keywords:: biological crust; desertification; water resistance; moisture

CLC:: S154;S152.7

DOI:: -

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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