基于GIS的LLCHEN-A分布式水文模型与水资源预测  

LLCHEN-A distributed hydrological model based on GIS and water resources prediction

作　　者：李兰[1,2] 陈攀[1] 孟洁[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072 [2]水资源安全保障湖北省协同创新中心,湖北武汉430072

出　　处：《武汉大学学报（工学版）》2015年第5期591-598,共8页Engineering Journal of Wuhan University

基　　金：水利部公益性行业科研专项项目(编号:201201066)

摘　　要：构建了一种以地理信息系统技术为支撑,充分利用DEM高程数据、土壤类型数字化、土地利用遥感数据等数字化信息以及考虑流域水资源利用情况的数字流域分布式水文模型(命名为LLCHEN-A模型).该模型产汇流原理采用了通用的水量平衡原理和蓄泄关系,模型代码全部是自编源代码,模型集成上除了融雪产汇流模块外,还有暴雨径流产汇流模块和水资源利用模块,使得模型具有适应性,能广泛适用于融雪地区、暴雨径流地区及河口地区的洪水预报和水资源预测,同时水循环模拟对象也从汛期洪水径流扩大到全年的水资源模拟.多个水文变量过程计算结果分析表明:该模型结构合理,计算的各环节水文过程符合实际水文规律.将模型应用于暴雨径流为主的杭州瓶窑以上东苕溪流域,应用实例表明该模型在水资源模拟与预测中能取得较好的效果.A distributed hydrological model named LLCHEN-A model supported by geographic information system （GIS） technology is built which can make full use of digital elevation model （DEM） data and re- mote sensing （RS） image （soil data and land use） and water resources utilization information. Runoff-con- flux calculation of the model is based on general principles of water balance and storage-discharge relation- ship. All the model codes are originally developed by the authors. The model is modularized into a runoff- conflux module for snow-runoff regions, a runoff-conflux module for rainstorm-runoff regions and a water resources utilization module, which makes it can be widely used in flood forecast and water resources pre- diction at snow-runoff regions, rainstorm-runoff regions and estuaries areas throughout the year not just in snowmelt period. Comparison of several hydrological variables shows that the proposed model is reasona- ble in structure and each hydrological process is in accordance with the actual hydrological regulation. The application example in the upstream part of Dongtiaoxi river basin relative to Pingyao station mainly char- acterized by rainstorm runoff indicates that the model leads to satisfactory results in water resources simu- lation and prediction.

关 键 词：水资源管理 分布式水文模型 水循环 数字水文 

分 类 号：P338.9[天文地球—水文科学]