| 围封沙化草地"种子岛"效应研究 |
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| 引用本文： | 曹子龙,郑翠玲,赵廷宁,孙保平.围封沙化草地"种子岛"效应研究[J].水土保持研究,2006,13(3):255-257,261. |
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| 作者姓名： | 曹子龙 郑翠玲 赵廷宁 孙保平 |
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| 作者单位： | 1. 北京林业大学水土保持学院,北京,100083
2. 北京市门头沟区水土保持工作站,北京,102300 |
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| 基金项目： | “十五”国家科技攻关课题“沙区农田、草地土壤风蚀防治技术研究(2002BA517A-10)” |
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| 摘 要： | 在浑善达克沙地南缘,以围封7年的沙化草地以及围栏外周围不同地段作为研究对象,通过对比分析围栏外不同地段,草地群落特征及土壤根系含量,并以围栏内草地作对照,对围封沙化草地的“种子岛”效应进行了尝试性研究。结果表明:围封沙化草地有显著的“种子岛”效应,且这一效应约在围栏500 m外逐渐消失。另外,这一效应还显示出,围封沙化草地具有以围栏为中心,成辐射状促进周边草地植被恢复的作用。
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| 关 键 词： | 围封 沙化草地 “种子岛”效应 |
| 文章编号： | 1005-3409（2006）03-0255-03 |
| 收稿时间： | 2005-07-02 |
| 修稿时间： | 2005-07-02 |
Study on the Seed Source Effect of Enclosed Sandy Grassland |
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| CAO Zi-long,ZHENG Cui-ling,ZHAO Ting-ning,SUN Bao-ping.Study on the Seed Source Effect of Enclosed Sandy Grassland[J].Research of Soil and Water Conservation,2006,13(3):255-257,261. |
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| Authors: | CAO Zi-long ZHENG Cui-ling ZHAO Ting-ning SUN Bao-ping |
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| Institution: | 1. College of Soil and Water Conservation, Beijing Forestry University, Beijing i00083, China ; 2. Mentougou Soil and Water Conservaton Station ,Beijing 102300,China |
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| Abstract: | In the south edge of Hunshandake sand,the seed source effect of enclosed sandy grassland is tentatively researched by contrasting the grassland community's characteristics and grass root content in different places grassland out of fence and the grassland which was enclosed for 7 years as contrast.The results show that the seed source effect of enclosed sandy grassland is dramatic,and the effect is fade-away out of fence for 500 m.In addition,the seed source effect also indicates that enclosed sandy grassland can restore radially the vegetation around. |
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| Keywords: | enclosure sandy grassland seed source effect |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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