林业科学2012，Vol.48Issue(10)：13-17,5.
青海湖湖东人工治理沙丘风沙流结构特征
Characteristics of the Sand Flow Structure of Artificially Governed Sand Dune on the East Shore of Qinghai
摘要
Abstract
In this we studied relationships between the total sand transport rate and wind speed, between the transport rates at different heights and wind speed, and between sand transport rate under different wind speeds with the height in the sand flow structure of artificially managed sand dune and mobile dune on the East shore of Qinghai Lake based on field measurement and SPSS data analysis. We also compared sand flow structures of the artificially governed dunes and mobile dunes at the same wind speed and the similar sand transport rate. The results showed that artificial measures had effects on sand flow structure. Total sand transport rate went up as wind velocity increased on artificially managed sand dune. When wind velocity was greater than 11 m·s-1 , total sand transport rate increased obviously. The variation of sand transport rate at 0 ～ 2 cm height was not obviously related to wind velocity. However, at 2 ～ 60 cm height, sand transport rate increased with wind velocity, but simple curve simulation did not fit the change pattern. The transport rate of the both sand dunes decreased exponentially with height, at the same wind velocity, the transport rate in artificially governed sand dune was lower than that in mobile dune. When sand transport rate was similar, the wind on mobile dune was stronger than that on artificially governed sand dune, and there was obvious difference in the sand flow structures between the two dunes.关键词
风沙流结构/风速/输沙率/青海湖流域Key words
wind-sand flow structure/ wind velocity/ sand transport rate/ Qinghai Lake drainage area分类
农业科技引用本文复制引用
张登山,石昊,魏殿生,鲁瑞洁,田丽慧,尚媛,王希..青海湖湖东人工治理沙丘风沙流结构特征[J].林业科学,2012,48(10):13-17,5.基金项目
国家科技支撑项目"青海湖流域沙漠化土地综合治理技术集成与试验示范"(2007BAC30B03) （2007BAC30B03）
林业公益性行业科研专项"青海湖周抗寒抗旱固沙植物筛选与快繁研究"(201004025) （201004025）
国家自然科学基金项目"青海湖周沙漠化演变及其防沙治沙模式研究"(40761026). （40761026）
