[1]戴海伦,苑爽,张科利,等.贵州省降雨侵蚀力时空变化特征研究[J].水土保持研究,2013,20(01):37-41.
　DAI Hai-lun,YUAN Shuang,ZHANG Ke-li,et al.Study on the Spatiotemporal Distribution of Rainfall Erosivity in Guizhou Province[J].Research of Soil and Water Conservation,2013,20(01):37-41.
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贵州省降雨侵蚀力时空变化特征研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 20 期数: 2013年01期 页码: 37-41 栏目: 出版日期: 2013-02-28
Title:
Study on the Spatiotemporal Distribution of Rainfall Erosivity in Guizhou Province
作者:
戴海伦1,2, 苑爽1,2, 张科利1,2, 朱青3
1. 北京师范大学 地表过程与资源生态国家重点实验室, 北京 100875;
2. 北京师范大学 地理学与遥感科学学院, 北京 100875;
3. 贵州省农科院 土肥研究所, 贵阳 550006
Author(s):
DAI Hai-lun1,2, YUAN Shuang1,2, ZHANG Ke-li1,2, ZHU Qing3
1. State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China;
2. School of Geography, Beijing Normal University, Beijing 100875;
3. Soil and Fertilizer Institute, Guizhou Academy of Agricultural Sciences, Guiyang 550006, China
关键词:
降雨侵蚀力; 土壤侵蚀; 贵州省; 时空分布
Keywords:
rainfall erosivity; soil erosion; Guizhou Province; spatiotemporal distribution
分类号:
S157.1
摘要:
降雨侵蚀力是区域土壤侵蚀状况定量化的首要因子，反映了区域降雨对土壤侵蚀的潜在作用。贵州省地处喀斯特强烈发育地区，水土流失极为严重。利用罗甸小区降雨过程资料及相应的土壤流失量资料，得出贵州省降雨侵蚀力指标的最佳组合为EI30；采用回归分析得出降雨侵蚀力的简易算法为：R=2.0354P1.2159+45.5649。利用264个站点1956—2000年的月降雨量、多年平均降雨量资料得出各站点降雨侵蚀力，并采用Kriging方法进行插值，得到降雨侵蚀力的空间分布图。结果表明：贵州省降雨侵蚀力的空间变化表现为由南向北递减的趋势。按照月降雨侵蚀力的分布状况，将贵州省全年划分为干季和湿季两个阶段，其中湿季降雨侵蚀力约占多年平均降雨侵蚀力的57%。总体而言，近年来贵州省的降雨侵蚀力变化不明显，但仍不能排除个别区域有增高的趋势。
Abstract:
Rainfall erosivity is the top priority in terms of quantifying regional soil erosion compared with other factors. It represents the potential effects of rainfall on soil erosion. Karst develops widely and intensively in Guizhou Province where soil erosion is severe. Data of rainfall events and their soil loss of a plot in Luodian, Guizhou Province were used to select the most suitable rainfall erosivity factor. The simple calculation equation developed by regression analysis was R=2.0354P1.2159+45.5649. This equation was adopted to calculate the rainfall erosivity in Guizhou Province by using the precipitation data of 264 stations from 1956 to 2000. The results indicated that there was a descending trend of rainfall erosivity from south to north. According to the temporal distribution of monthly rainfall erosivity, the whole year was divided into two periods which were dry season and wet season, and the latter occupied 57% of the annual rainfall erosivity. In general, the rainfall erosivity in Guizhou Province had little varied in recent years. However, there were still a few areas where rainfall erosivity was increasing.

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备注/Memo

收稿日期:2012-07-02;改回日期:2012-08-14。
基金项目:国家自然科学基金资助项目（41071184）；贵州省水利科技重点项目（KJZD200801）
作者简介:戴海伦(1986-),女,上海人,博士研究生,主要从事土壤侵蚀研究。E-mail:daihailun@mail.bnu.edu.cn
通讯作者:张科利(1962-),男,陕西宝鸡人,博士,教授,主要从事土壤与环境研究。E-mail:keli@bnu.edu.cn

更新日期/Last Update: 1900-01-01