摘要
气象要素是草原综合顺序分类中重要的指标,对生态系统中物种的组成、生长、演替更新及干物质的积累有很大的影响。利用甘肃及其周边186个气象台站30年平均降水资料,分别采用了反距离加权法(In-verse distance weight tension)、样条函数法(Spline methods)和普通克里格法(Ordinary Kriging)等3种常见的空间内插方法较为系统的分析比较了这3种内插方法插值结果,结果表明:3种方法的结果都基本上反映了甘肃降水大体空间分布规律,而普通克里格法的插值效果最好,样条函数法次之,反距离加权法较差。
Climate factor is important index bases in the comprehensive and sequential classes of grassland classification, and has great impact on composing, growth and succession of species, accumula- tion of dry matter. Average annual precipitation data of the last 30 years from 1961 to 1990 at 186 meteorological stations in Gansu and its nearby regions was compared and analyzed by Inverse distance weight tension, Spline, Ordinary Kiging methods. The result showed that the three interpolators could reflect the spatial distribution of precipitation of Gansu province. Ordinary Kriging method was the most effective, followed by Spline methods and Inverse distance weight tension method.
出处
《草业科学》
CAS
CSCD
2008年第6期19-23,共5页
Pratacultural Science
基金
国家高新技术研究发展计划"草业生产数字化管理关键技术研究"(2006AA10Z24)
关键词
空间插值
年降水量
反距离加权平方法
样条函数法
普通克里格法
spatial interpolation
average annual precipitation
Inverse distance weight tension
Spline
Ordinary Kiging
