摘要
基于新疆地区52个气象观测站点的逐日气温和降水量数据,利用空间展开模型研究了1970,1980,1990和2000年新疆地区平均气温与年降水量回归关系的空间异质性,并将结果予以可视化.采用空间展开模型用各观测站点的地理位置函数来代替各观测点的位置特性加入到模型当中,很好地解决了由于各站点地理特性而导致的空间异质性.研究表明,新疆地区气温对降水量的影响强度随着地理空间位置的变化而变化,二者的回归关系呈现出显著的空间非平稳性.北疆地区的影响系数显著为正,天山山区的大多数气象观测站点为正,而南疆地区的回归系数所反映的影响强度特征较为散乱,这种不一致性取决于南疆地区的特殊地理格局.研究结论充分说明新疆地区气温对降水量的影响强度存在明显的地域差异.
Based on the daily temperature and precipitation data at 52 representative meteorologi- cal stations in Xinjiang during 1970,1980,1990 and 2000,we analyzed the spatial heterogeneitythe of the regression relationship between average temperature and annual precipitation of Xinjiang region using the spatial expansion method, and visualized the results . The functions of each loca- tion site were added to the model to replace the position characteristics of each observation point, which had resolved the spatial heterogeneity due to the geographical characteristics of each site. The influences of temperature on precipitation were changed with the change of geospatial loca- tions, and the regression relationship between them showed the significant spatial non-stationary. The impact factor of the northern area is significantly positive, the impact factors of most meteor- ological observation stations＂ in the Tianshan Mountains are positive, but the impact strength characteristics of the regression coefficients of the southern region are more scattered. This in- consistency depends on the particular geographical pattern in southern region . The results showed that there are obvious regional differences among the influences of temperature on precipi- tation in Xinjiang region .
出处
《山东理工大学学报（自然科学版）》
CAS
2015年第2期36-39,43,共5页
Journal of Shandong University of Technology:Natural Science Edition
关键词
空间展开模型
年均气温
年降水量
新疆地区
spatial expansion method
average temperature
annual precipitation
Xinjiang region
