陇南嘉陵江流域年降水量空间结构的趋势面分析

Spatial Trend Surface Analysis of Precipitation in Longnan Jialing River Basin

降水趋势分布受地理位置、海拔高度及植被分布的影响显著,研究时应充分重视这种影响,本文利用陇南嘉陵江流域多年平均降水量资料,对区域内年平均降雨量进行趋势面分析,建立流域年降水量空间结构的趋势面方程,利用matlab绘制曲面图并运用ArcGIS趋势面分析模块对降水量空间结构的趋势进行分析,分析结果为相关工作研究者提供快速、直观的科学依据.

The tendency of precipitation distribution affected by geographical location,altitude and vegetation distribution very significantly,study should pay full attention to this effect.In this paper,Longnan river basin the average annual precipitation data be used,also within the region the average annual rainfall of trend surface be analyzed,in the meantime,establishment of annual precipitation spatial structural trend surface equation,use MATLAB figure drawing surface and use ArcGIS trend surface analysis module to the precipitation spatial structure trend analysis,the analysis results for the relevant work of providing fast,intuitive scientific basis.