陕北榆林风沙区护岸林生态效益研究  

Ecological Benefit of River Bank Protection Forests of Yulin Sandy Area in Northern Shaanxi

作　　者：谢燕[1] 黄炎和[1] 廖超英[2] 高保山[2] 

机构地区：[1]福建农林大学,福建福州350003 [2]西北农林科技大学,陕西杨陵712100

出　　处：《西北林学院学报》2008年第4期52-55,61,共5页Journal of Northwest Forestry University

基　　金：陕西省科技攻关项目“榆林风沙区综合治理与农林牧复合经营关键技术研究”(2006k03-C11-02)

摘　　要：以提高防风效能、减少水面蒸发、减少输沙量等为指标,对陕北榆林风沙区护岸林进行调查和观测,结果表明:陕北榆林风沙区护岸林具有降低风速、减少水面蒸发、减少输沙量、降低河岸冲刷等功能。紧密型林带其输沙量只有对照地的4.27%~5.04%;其防风效能在一倍树高处可达到25.93%~46.2%,在5倍树高处可达到18.76%~25.4%;其有叶期与无叶期防风效能差值只有4.32;4月份紧密型林带比对照地降低蒸发量22.6%~30.7%,5月份比对照地降低蒸发量31.4%~34.8%。所以紧密型林带对于河岸防护更为合适,其防护效果更好。The investigation and observation on the river bank protection forests in the view of their wind protection function improvement,evaporation,reducing and sediment discharge reducing showed that in the Yulin sandy area in northern Shaanxi,bank protection forests could reduce wind speed and water sutface evaporation,reduce sediment discharge and bank washing.The sediment discharge of the dense shelter were only 4.27%～5.04% to the comparison site.The wind protection function of the dense shelter could reach to...

关 键 词：榆林风沙区 护岸林 生态效益 

分 类 号：S727.2[农业科学—林木遗传育种]