摘要
在复杂山地地形条件下,近地表风速是空间随机向量,受地形、地貌和地物影响较大.采用正交试验设计采样点,使用手持气象站对风速进行采样,利用普通最小二乘法回归分析(OLS)、空间回归分析方法对采样数据进行分析,建立平均风速和小地形因子的数学推算模型.结果表明OLS回归模型对研究区风速的模拟效果良好,模拟结果基本能够反映山地近地表风速的分布差异.
In the conditions of complex mountainous terrain,near-surface wind speed is a space random vector which is influenced significantly by the topography and surface features.This paper is to design sampling points by using orthogonal experimental design.Wind speed value is sampled with the hand-hold weather station.Average near-surface wind speed is analyzed by methods of OLS regression analysis and spatial regression analysis.The average wind speed prediction model is established which is related with small topographic factors.The simulation result of OLS regression model in the study area is good,the simulation results basically reflect distributional characteristics of near-surface wind speed in hilly area.
出处
《云南大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第S2期255-258,共4页
Journal of Yunnan University(Natural Sciences Edition)
基金
国家科技支撑子项目“西南林区火灾扑救技术”资助(2006BAD04B0503)
关键词
山地近地表风速
模拟
地形因子
回归分析
near-surface wind speed in mountain areas
simulation
terrain factors
regression analysis
