[1]王彦武,罗玲,张峰,等. 民勤县绿洲边缘固沙林防风蚀效应研究[J].西北林学院学报,2018,33(4):64-70.[doi:10.3969/j.issn.1001-7461.2018.04.10]
 WANG Yan-wu,LUO Ling,ZHANG Feng,et al. Windbreak Effect of Sand-Fixation Forest on the Edge of Oasis in Minqin[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2018,33(4):64-70.[doi:10.3969/j.issn.1001-7461.2018.04.10]
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 民勤县绿洲边缘固沙林防风蚀效应研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第33卷
期数:
2018年第4期
页码:
64-70
栏目:
出版日期:
2018-07-31

文章信息/Info

Title:
 Windbreak Effect of Sand-Fixation Forest on the Edge of Oasis in Minqin
文章编号:
1001-7461(2018)04-0064-07
作者:
 王彦武1罗玲2张峰1陈天林3
 (1.甘肃省水土保持科学研究所,甘肃 兰州 730020;2.河南理工大学 资源环境学院,河南 焦作 454000;3.甘肃省水利厅 水土保持局,甘肃 兰州 730000)
Author(s):
 WANG Yan-wu1LUO Ling2ZHANG Feng1CHEN Tian-lin3
 (1.Gansu Institute of Soil and Water Conservation Sciences,Lanzhou,Gansu 730020,China; 2.College of Resource and Environment,Henan Polytechnic University,Jiaozuo,Henan 454000,China; 3.Soil and Water Conservation Bureau,Department of Water Resources of Gansu Province,Lanzhou,Gansu 730000,China)
关键词:
 民勤县绿洲固沙林土壤保护防风固沙
Keywords:
 Minqin County oasis sand-fixation forest soil conservation windbreak and sand fixation
分类号:
S714.7
DOI:
10.3969/j.issn.1001-7461.2018.04.10
文献标志码:
A
摘要:
 在民勤绿洲边缘,以林龄为30 a左右的柽柳林、白刺林和不同林龄的梭梭林为研究对象,测定和分析固沙林的防风固沙效应。结果表明,固沙林的防风固沙效应取决于树种类型及树龄,且保护效应在迎风面和背风面差异显著。不同树种固沙林降低风沙流流量和减少风蚀深度的效应均表现为30年生梭梭林>柽柳林>40年生梭梭林>20年生梭梭林>白刺>裸沙地,且随着梭梭林龄的增长,30 a林龄时达到最大;各固沙林地背风面地表粗糙度变化范围在0.57~4.18 cm,以30年生梭梭林最大,白刺最小,且均大于裸沙地,背风面距离林木越远,地表粗糙度逐渐减小;梭梭林背风面各测点的风积厚度、风速降低幅度和地表粗糙度的均值随着林龄的增长分别由0.21 cm、12.66%、2.25 cm增大到0.5 cm、20.41%、3.38 cm;植株的高度对防风效果有显著影响,越接近固沙林中部,对风速的影响越大,林木背风面中部的风速降低幅度是顶端处的1.16~3.99倍。梭梭林与其他固沙林相比防风固沙效果明显,是当地值得推广种植的防风固沙树种。
Abstract:
 The stands of about 30 years of Tamarix,Nitraria and the different ages of Haloxylon forests were studied to determine and analyze the windbreak and sand-fixation effects at the edge of Minqin Oasis.The results showed that the windbreak and sand fixation effects of sand fixation depended on the type and age of the tree species.The protective effect had significant difference between windward and leeward.Effects of different tree species on reducing the wind-sand flow rate and wind erosion depth were in the order of 30-year-old Haloxylon>Tamarix>40-year-old Haloxylon forest>20-year-old Haloxylon forest >Nitraria>bare sandy land.Haloxylon ammodendron reached the maximum effects at the age of 30.The surface roughness of sand fixing forest leeward changed in the range of 0.57-4.18 cm,30-year-old Haloxylon was the maximum and the smallest was Nitraria,and all of them were larger than those in the bare sand.The surface roughness gradually decreased with the trees farther away the leeward face.The means of wind product thickness,the decreasing amplitude of wind speed and surface roughness of the measured points in the leeward side of Haloxylon were increased from 0.21 cm,12.66%,2.25 cm to 0.5 cm,20.41% and 3.38 cm,respectively.The plant height had a significant impact the windbreak effect.The closer to the middle of the sand fixing forest,the greater of the impact on the wind speed.The decreasing amplitude of wind speed in the middle of the forest leeward was 1.16-3.99 times lower than the top.Compared to other forests,Haloxylon forest was the best choice to be promoted in Minqin Oasis for its significant windproof effect.

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备注/Memo

备注/Memo:
 收稿日期:2017-10-27修回日期:2017-12-07
基金项目:甘肃省青年科技基金资助项目(1506RJYA177);甘肃省自然科学基金资助项目(1308RJZA237);甘肃省水利重点科研计划项目(甘水科外发[2013]293-9)。
作者简介:王彦武,男,博士,高级工程师,研究方向:水土保持与荒漠化防治。E-mail:wang_yanwu@163.com
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