闽西地区近30年降雨侵蚀力变化分析  

Analyzing Variations in Rainfall Erosivity During Recent 30 Years over West Fujian

作　　者：黄瑶[1] 余明[1] 

机构地区：[1]福建师范大学地理科学学院,福建福州350007

出　　处：《福建师范大学学报（自然科学版）》2017年第1期68-74,共7页Journal of Fujian Normal University：Natural Science Edition

基　　金：福建省自然科学基金资助项目(2014J01149);福建省公益基金资助项目(2013R02)

摘　　要：利用闽西地区18个气象站30 a的日降雨资料为基础,计算全省的降雨侵蚀力.并采用统计分析、空间分析和M-K突变分析等方法对闽西地区降雨侵蚀力的时空变化特征进行分析.结果表明:从年降雨侵蚀力来看,降雨侵蚀力的年变化呈上升趋势;从季节变化趋势来看,降雨侵蚀力在夏季和冬季呈上升趋势,而春季和秋季降雨侵蚀力呈下降趋势,但降雨侵蚀力上升或者下降均不显著;闽西地区30 a内降雨侵蚀力变化表现为变率突变,R值年际间变化较大,降雨侵蚀力空间分布不均,总体表现为由西北部向东南部递减.Based on the daily rainfall date between 1980 and 2009 from 18 rainfall station in the western of Fujian to calculate the rainfall erosion. Analyzing the spatial and temporal variation by using the statistical analysis,spatial analysis,and Mann-Kendall test. The results showed that： the annual rainfall erosion showed an upward trend. There existed an insignificant increasing trend of rainfall erosion for summer and winter,a decreasing trend for autumn and spring. The rainfall erosion of the western of Fujian shows a change in variability in the past 30 years,which means that there is large change in average rainfall erosion but the variation coefficient of R value change significantly and uneven spatial distribution.

关 键 词：降雨侵蚀力 日雨量 趋势 M-K突变检验 闽西地区 

分 类 号：S157[农业科学—土壤学]