洮河滩地柳树护岸林营造与防护效应  

Protective Effect of Willow Forests along the Beach of the Taohe River

作　　者：杨斌[1] 刘淑明[2] 

机构地区：[1]甘肃省林业科学技术推广总站,甘肃兰州730046 [2]西北农林科技大学理学院,陕西杨陵712100

出　　处：《西北林学院学报》2007年第6期48-50,共3页Journal of Northwest Forestry University

基　　金：甘肃省林业厅科研项目"柳树新品种丰产栽培技术研究示范"(2002001)

摘　　要：为减少洮河水流对河岸的冲刷和入黄泥沙量,在洮河滩地用5个柳树良种以4种密度配置营造护岸林,对其生长情况和防护效应进行观测。结果表明:J172柳的成活生长表现最好,3 a生平均树高为7.07 m,平均胸径为11.82 cm;最佳的护岸林密度是2 m×2 m和3 m×3 m;密度越大,阻拦的泥沙越厚,3 a生柳树最佳密度配置时阻拦泥沙平均厚1.36 m,可有效阻拦泥沙输入黄河。5 varieties of willow were planted with 4 densities along the beach of the Taohe River,one of the tributaries of the Yellow River,to investigate the effects of diminishing the bank erosion and the amount of sediment into the Yellow River.The results showed that the willow variety J172 exhibited best behaviors in survival rate and growth.3-year old trees could reach a height of 7.07 m in average,and 11.82 in average breast height diameter.The most optimal densities for afforestation were 2 m×3 m and 3 m×3 m;The denser the density of the willow trees planted,the thicker of the sediment retained.The thickness of the sediment retained for 3 years trees could be 1.36m under the optimal densities,indicating that willow forests could effectively retain the sediment form the Taohe River into the Yellow River.

关 键 词：柳树 护岸林 生长 防护效应 

分 类 号：S791.257.02[农业科学—林木遗传育种]