福建省降雨侵蚀力R值预测预报方法研究  

Studies on Rainfall Erosivity-R and Its Forecast Methods in Fujian Province

作　　者：张坤 洪伟 吴承祯 丁新新 

机构地区：[1]福建省高校森林生态系统过程与经营重点实验室,福州350002

出　　处：《水土保持研究》2008年第3期23-25,48,共4页Research of Soil and Water Conservation

基　　金：福建省科技厅重大项目(2001F007)

摘　　要：降雨侵蚀力反映由降雨引起的土壤侵蚀的潜在能力,是建立通用土壤流失方程USLE的最基本因子之一。由于降雨侵蚀力计算过程中所需资料较难收集,给其计算增加了难度。利用福建省46个代表性气象站资料,建立了利用经度、纬度、海拔高度以及月降雨量估算降雨侵蚀力的简易算法模型,结果表明该模型预测预报效果较好,能够用于估算平均降雨侵蚀力。Rainfall erosivity reflects the potential ability of the soil loss caused by rainfall and it is very important for predicting soil loss quantitatively. Two rainfall erosivity models basing on longitude,latitude, height above sea level and monthly rainfall a- mount to estimate rainfall erosivity directly were established from data of 46 weather stations in Fujian province. The models worked very well and could be used to estimate the average rainfall erosivity.

关 键 词：地理因素 降雨侵蚀力 模型 

分 类 号：S157.1[农业科学—土壤学]