Temporal and Spatial Characteristics of Rainfall Erosivity in Southeast Fujian Province During 1980-2009

CUI Xiaoyan; ZHA Xuan; HUANG Shaoyan

doi:10.13961/j.cnki.stbctb.2015.01.001

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Temporal and Spatial Characteristics of Rainfall Erosivity in Southeast Fujian Province During 1980-2009

- Temporal and Spatial Characteristics of Rainfall Erosivity in Southeast Fujian Province During 1980-2009
- Bulletin of Soiland Water Conservation Vol. 35, Issue 1, Pages: 1-4(2015)
- 作者机构：
  
  福建省亚热带资源与环境重点实验室, 福建师范大学地理科学研究所,福建,福州,350007
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2015.01.001
  CLC：
- Published：2015
- 稿件说明：
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CUI Xiaoyan, ZHA Xuan, HUANG Shaoyan. Temporal and Spatial Characteristics of Rainfall Erosivity in Southeast Fujian Province During 1980-2009[J]. Bulletin of Soiland Water Conservation, 2015, 35(1): 1-4.
DOI：

CUI Xiaoyan, ZHA Xuan, HUANG Shaoyan. Temporal and Spatial Characteristics of Rainfall Erosivity in Southeast Fujian Province During 1980-2009[J]. Bulletin of Soiland Water Conservation, 2015, 35(1): 1-4. DOI： 10.13961/j.cnki.stbctb.2015.01.001.

摘要

[目的

]

揭示闽东南地区降雨侵蚀力的时空变异特征

为区域水土流失防治及水土保持规划提供依据。[方法

]

基于闽东南地区1980-2009年26个雨量站的逐日降雨数据

运用福建省降雨侵蚀力简易算法。[结果

]

闽东南地区降雨侵蚀力年内分布集中于5-8月

呈现双峰式分布;降雨侵蚀力年际间变化幅度较大。1982年年降雨侵蚀力(R值)低至253.82(MJ·mm)/(hm

·h)

2006年R值高达725.39(MJ·mm)/(hm

·h)

极值比为2.86;30 a内的闽东南地区的降雨侵蚀力并未出现明显的突变现象。[结论

]

研究区内降雨侵蚀力R值空间分布不均匀

总体上呈现沿海向内陆增加

西南高东北低的趋势。

Abstract

[Objective] Studying the distribution pattern of rainfall erosivity in the southeastern area of Fujian Province to privide basis for soil erosion control and soil and water conservation plan.[Methods] Based on the data from 26 rainfall station in the Southeastern Fujian Province during 1980-2009

simple algorithm for rainfall erosivity was used.[Results] Rainfall erosivity in Southeastern Fujian Province showed a bimodal distribution as it occoured mainly from May to August. Rainfall erosivity varied greatly over years. The highest value was 725.39 (MJ·mm)/(hm2·h) occurred in 2006

while the lowest value was 253.82 (MJ·mm)/(hm2·h) occurred in 1982

with the extreme ratio of 2.86. Rainfall erosivity in Southeast Fujian Province during the past 30 years did not showed abrupt changes.[Conclusion] Rainfall erosivity showed an uneven distribution pattern with increasing trend from coast to inland

and the value was comparatively higher in southwest than that in northeast.

关键词

Keywords

references

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