[1]李建刚,王继和,蒋志荣,等.民勤县主要治沙造林树种空间结构及其防风作用[J].水土保持研究,2008,15(03):121-124.
　LI Jian-gang,WANG Ji-he,JIANG Zhi-rong,et al.Study on the Tree Spatial Structure and the Wind Break Function on Psammophyte in Minqin County[J].Research of Soil and Water Conservation,2008,15(03):121-124.
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民勤县主要治沙造林树种空间结构及其防风作用

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 15 期数: 2008年03期 页码: 121-124 栏目: 出版日期: 2008-06-20
Title:
Study on the Tree Spatial Structure and the Wind Break Function on Psammophyte in Minqin County
作者:
李建刚1, 王继和2, 蒋志荣1, 柴薇薇1
1. 甘肃农业大学 林学院, 兰州 730070;
2. 甘肃省治沙研究所, 甘肃 武威 733000
Author(s):
LI Jian-gang1, WANG Ji-he2, JIANG Zhi-rong1, CHAI Wei-wei1
1. College of Forestry，Gansu Agricultural University，Lanzhou 730070, China;
2. Gansu Desert Control and Research Institute，Wuwei, Gansu 733000, China
关键词:
沙生植物; 空间结构; 防风作用
Keywords:
psammophyte; spatial structure; wind break function
分类号:
S718.512;X171.4
摘要:
通过对民勤主要治沙造林树种梭梭、柠条、花棒和沙拐枣4种沙生植物空间结构及其防风作用的研究，结果表明：4种沙生植物枝条总数，直径为0～2，2～4，4～6，6～8，8～10 mm的枝条数和迎风面宽度随植株高度逐渐增大，达到最大值后随株高逐渐降低，直径>10 mm的枝条随植株高度呈下降趋势；4种沙生植物都具有明显的降低风速作用，且随植株后距离的增大降低风速作用逐渐减弱；植株降低风速作用与枝条阻挡面宽度以及迎风面宽度有密切联系，且随着阻挡宽度和迎风面宽度的增大而增大，迎风面宽度与枝条阻挡面宽度呈正相关。
Abstract:
The tree spatial structure and the wind break function are studied on psammophyte,such as Holoxylom ammodendron Bunge,Hedysarum scoparium Fiseh.et Mey,Caragana korshinskii Kom and Calligonum mongolicum Turcz which are desertification control afforestation trees.The results showed that the total number of branch,the number of branch which have the diameter between 0～2,2～4,4～6,6～8,8～10 mm,the windward side width are increasing with the tree height,and when reach the maximum,then reduced.The number of branches whose diameter above on 10 mm declined.The four psammophyte all have the function of weakening wind speed,but the function gradually reduced with the increasing of the distance behind tree.The wind break function has a correlation with barrier side and windward side width.There is a positive correlation between windward side width and barrier side width.

参考文献/References:

[1] 李滨生.治沙造林学[M].北京:中国林业出版社.1994:105.
[2] 凌裕泉, 屈建军, 金炯.稀疏天然植被对输沙量的影响[J].中国沙漠, 2003, 23(1):12-17.
[3] 朱震达, 吴正.塔克拉玛干沙漠风沙地貌研究[M].北京:科学出版社, 1981:110.
[4] 恩和, 毕玉革.沙生灌木平茬工艺及切割机理的分析[J].林业机械与木工设备, 2004, 32(8):50-51.
[5] 黄金田.沙生灌木资源与我区林业产业[J].林业实用技术, 2005(7):13-15.

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备注/Memo

收稿日期:2007-3-27。
基金项目:国家自然科学基金项目“西北地区沙生植物资源保护与持续利用”
作者简介:李建刚（1978－），男，在读硕士，主要从事水土保持与荒漠化防治研究。E-mail：lijggsau@126.com
通讯作者:蒋志荣（1959- ），男，教授，主要从事林学水土保持研究。E-mail：jzhirong@gsau.edu.cn

更新日期/Last Update: 1900-01-01