沿海风口木麻黄基干林带防风效能研究  

Study on the Wind Prevention Effect of Casuarina equisetifolia Main Shelterbelt in the Draught of the Coastal Zone

作　　者：朱炜[1] 吴惠忠[2] 李茂瑾[2] 苏亲桂 Zhu Wei;Wu Huizhong;Li Maojin;Su Qingui(Fujian Forestry Academy of Sciences,Fuzhou 350012,China;Fujian Province Huian Chihu State-owned Forest Farm,Quanzhou 362131,China)

机构地区：[1]福建省林业科学研究院,福建福州350012 [2]福建省惠安赤湖国有防护林场,福建泉州362131

出　　处：《防护林科技》2023年第2期17-21,共5页Protection Forest Science and Technology

基　　金：福建省科技计划项目(2021R1010001);国家林业局南方山地用材林重点实验室、福建省森林培育与林产品加工利用重点实验室资助。

摘　　要：福建省沙地木麻黄基干防护林带是沿海地区抵御风沙的生态屏障,在改善沿海地区的生态环境中发挥了重要作用。通过建立的生态定位监测站,利用长期观测的年序列数据针对沿海风口木麻黄基干林带不同季节、风向的防风效能进行统计分析,结果表明:春季、秋季和冬季主风向以NNE、NE和ENE为主,夏季以SSW、SW为主,主风向上风速等级高频率也大。主风向在不同季节垂直方向上,随着高度增加,风速增加,防风效能降低;林带内垂直于林带的风向,防风效能最小,而随着角度的减少,防风效能逐渐增大;水平方向上,林带后1 H防风效能最大,垂直于林带的风向防风效能最大,随着角度的减少,防风效能逐渐减小,林带后5~20 H随着距离的增加防风效能下降,但趋势变缓。Casuarina equisetifolia main shelterbelt in sandy land of Fujian Province is an ecological barrier against wind and sand in coastal areas,and plays an important role in improving the ecological environment in coastal areas.Based on the established ecological positioning monitoring station,the statistical analysis of its wind prevention effectiveness in different seasons and wind directions was carried out by using the long-term observed annual series data.The results showed that the main wind direction in spring,autumn and winter was mainly NNE,NE and ENE,and in summer was mainly SSW and SW,and the wind speed grade in the main wind direction was high and the frequency was large.In the vertical direction of the main wind direction in different seasons,with the increase of height and wind speed,the wind prevention effect decreased.In the forest belt,the wind direction perpendicular to the forest belt had the lowest windproof efficiency,and with the decrease of the angle,the wind prevention effect gradually increased.In the horizontal direction,the wind prevention effect was the largest in 1H after the forest belt,and the effect was the largest in the wind direction perpendicular to the forest belt,and with the decrease of the angle,the wind prevention effect gradually decreased,and the effect decreased with the increase of distance from 5H to 20H after the forest belt,but the trend slowed down.

关 键 词：木麻黄 基干林带 防风效能 风向 风速 

分 类 号：S792.93[农业科学—林木遗传育种] S727.26[农业科学—林学]