漓江含沙量预测及侵蚀坡面径流调控模式研究  

Sediment Forecast Based on Least Squares Support Vector Machine and Slope Runoff Adjustment Measures in Lijiang River

作　　者：覃星铭[1,2] 蒋忠诚[1] 罗为群[1] 邓艳[1] 赵一[1] 

机构地区：[1]中国地质科学院岩溶地质研究所,国土资源部岩溶动力学重点实验室/岩溶生态系统与石漠化治理重点开放实验室,广西桂林541004 [2]西南大学资源环境学院,重庆400716

出　　处：《中国农村水利水电》2015年第11期101-105,共5页China Rural Water and Hydropower

基　　金：国家“十二五”科技支撑计划项目(2012BAC16B02);广西自然科学基金项目(2013GXNSFBA019220);中国地质科学院重点实验室基本科研业务费资助项目(2010-SYS-16);桂林市科学研究与技术开发计划项目(20140117-3)

摘　　要：为了探讨漓江含沙量变化及其流域内侵蚀坡面径流的调控对策,通过运用最小二乘支持向量机(LS-SVM)理论对漓江含沙量进行了预测,并依据漓江流域侵蚀坡面的类型、分布和侵蚀特征,分析研究了适用于漓江流域侵蚀坡面径流调控的技术方法。研究结果表明:基于LS-SVM所构建的预测模型能较准确快速的预测漓江含沙量;提出的4种径流调控技术模式具有分流、截沙、储水灌溉的生态功能,适用性强,对增强侵蚀坡面水土保持,解决漓江降沙减沙,缓解漓江生态环境压力具有重要的参考意义。In order to explore the variation of suspended sediment concentration and slope runoff adjustment measures in Lijiang River, the sediment concentration was forecast based on least squares support vector machine （LS-SVM）. And according to the erosion type, distribution and erosion characteristics of erosion slopes in Lijiang River Basin. Slope runoff regulation models for Lijiang River basin are discussed and analyzed. Research reveals that a new effective assessment model with good prediction results and high speed is established, with continued calculations and comparative analyses. Moreover, the proposed model for sediment forecast is feasible. Four kinds of runoff regulation technology models that are being put forward in different forms have the ecological functions for water diversion, sand interception and irrigation with the advantages of extensive applicability. The results not only are helpful to reduce sediment in Lijiang River and enhance soil and water conservation on slopes, but also have important significance for alleviating the pressure of ecological environment in Lijiang River.

关 键 词：含沙量预测 LS-SVM 径流调控 漓江中上游 

分 类 号：P333[天文地球—水文科学]