[1]郑海金,杨洁,左长清,等.红壤坡地侵蚀性降雨及降雨动能分析[J].水土保持研究,2009,16(03):30-33.
　ZHENG Hai-jin,YANG Jie,ZUO Chang-qing,et al.Analysis of the Erosive Rainfall and Rainfall Erosion Energy on Red-soil Slopeland[J].Research of Soil and Water Conservation,2009,16(03):30-33.
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红壤坡地侵蚀性降雨及降雨动能分析

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 16 期数: 2009年03期 页码: 30-33 栏目: 出版日期: 2009-06-20
Title:
Analysis of the Erosive Rainfall and Rainfall Erosion Energy on Red-soil Slopeland
作者:
郑海金1, 杨洁1, 左长清2, 喻荣岗1, 张华明1, 张龙1
1. 江西省水土保持科学研究所, 南昌 330029;
2. 水利部 水土保持生态工程技术研究中心, 北京 100044
Author(s):
ZHENG Hai-jin1, YANG Jie1, ZUO Chang-qing2, YU Rong-gang1, ZHANG Hua-ming1, ZHANG Long1
1. Jiangxi Institute of Soil and Water Conservation, Nanchang 330029, China;
2. Research Center on Soil and Water Conservation of the Ministry of Water Resources, Beijing 100044, China
关键词:
红壤坡地; 侵蚀性降雨; 降雨动能
Keywords:
red-soil slopeland; erosive rainfall; rainfall erosion energy
分类号:
S157.1
摘要:
侵蚀性降雨标准的确定、降雨动能的科学测算以及侵蚀性降雨和降雨动能特征的分析，是开展降雨侵蚀力研究和土壤侵蚀预测预报的基础，而目前针对红壤坡地的系统研究还较为鲜见。通过气象观测站与标准径流小区连续5 a的实测资料，采用80%经验频率法确定了江西红壤坡地侵蚀性降雨标准，其中雨量标准为9.97 mm，雨强标准为0.756 mm/h；在此基础上计算了侵蚀性降雨和侵蚀性降雨动能，并分析了侵蚀性降雨及其动能的时间变异规律。结果表明：侵蚀性降雨场次不多，仅占总降雨场次的25.85%，但雨量大强度高；侵蚀性降雨及其动能时间分配不均，主要集中在4-9月，分别占全年的74.51%和75.37%。最后建立了降雨动能简易估算方法，这对探讨江西红壤坡地降雨侵蚀力和土壤侵蚀预报模型具有积极的意义。
Abstract:
Establishing rainfall standard of soil erosion, calculating rainfall erosion energy and analyzing their characteristics are important to the studies on rainfall erosivity and erosion prediction. However, these studies on red-soil slopeland are comparable less. By analyzing experiment data through the climate observation station and the bareness runoff plot during 5 years, the erosive rainfall standard on red-soil slopeland in Jiangxi province is established, and that is 9.97 mm and 0.756 mm/h. Then, the erosive rainfall and its energy are calculated and their distribution regulars in time are studied. It is shown that the number of erosive rainfall is only 25.82 percent during experimental period, but precipitation and rainfall intensity are higher. The erosive rainfall and rainfall erosion energy are variety in yearly, seasonal and monthly distribution, and all mainly distributes between April and September, accounting for 74.51% and 75.37% respectively among one year. Last, the equation of rainfall erosion energy and precipitation was induced for estimating evalues. This study is important to research the rainfall erosivity and establish soil loss equation in this region.

参考文献/References:

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备注/Memo

收稿日期:2008-11-17。
基金项目:江西省科技支撑项目“红壤坡地生态农业减灾技术研究”
作者简介:郑海金（1978- ），女，江西临川人，硕士，主要从事水土保持与土壤污染调控研究。E-mail：haijinzheng@163.com

更新日期/Last Update: 1900-01-01