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JOURNAL OF DESERT RESEARCH  2014, Vol. 34 Issue (1): 67-74    DOI: 10.7522/j.issn.1000-694X.2013.00188
    
Root Distribution of Salix cheilophila along a Chronosequence in High-Cold Sandland
Yu Yang1, Jia Zhiqing1, Zhu Yajuan1, Zhao Shuling2, Liu Haitao1, Li Qingxue1, Wei Dengxian3
1. Qinghai Gonghe Desert Ecosystem Research Station, Institute of Desertification Studies, Chinese Academy of Forestry, Beijing 100091, China;
2. Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China;
3. Sand Control Experimental Station of Qinghai Province, Gonghe 813005, Qinghai, China
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Abstract  Root distribution and biomass of planted Salix cheilophila were measured based on different plantation ages (6, 11, 16 years and 21 years) in High-Cold sand land. Soil organic matters in the soil profile were also measured. Variance analysis, multi-comparison, regression analysis was used to analyze experimental results. The result indicated that: (1) The root system of Salix cheilophila on different plantation ages is mainly make up of fine roots and middle roots. Fine roots (diameter<2.0 mm) take more than 50% of the total amount. (2) The root system of Salix cheilophila mainly exists in soil depth of 0~50 cm and the weight of roots decreased below 30 cm with the soil depth. The root systems of 6-year old trees were distributed in 0~130 cm and the vertical distribution of 21-year old trees could reached 200 cm, respectively. Root biomass increased significantly with the lasting of recovery time. (3) The root system showed main roots with the extension of restoration time, Salix cheilophila of different stand ages have typical vertical root system and the taproots expanded vertically and developed obviously. (4) Regression results showed that the weight of the root has significantly effect on the soil organic matters which provide the basis to evaluated the soil improvement after the establishment of artificial Salix cheilophila plantation in the vegetation restoration area.
Key words:  high-cold sand land      Salix cheilophila      root distribution      artificial shelter forest     
Received:  10 November 2012      Published:  20 January 2014
ZTFLH:  Q948  
Corresponding Authors:  贾志清,jiazq@caf.ac.cn     E-mail:  jiazq@caf.ac.cn

Cite this article: 

Yu Yang, Jia Zhiqing, Zhu Yajuan, Zhao Shuling, Liu Haitao, Li Qingxue, Wei Dengxian. Root Distribution of Salix cheilophila along a Chronosequence in High-Cold Sandland. JOURNAL OF DESERT RESEARCH, 2014, 34(1): 67-74.

URL: 

http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00188     OR     http://www.desert.ac.cn/EN/Y2014/V34/I1/67

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