摘要
从岩溶水文和灌区水文两方面分析了西南岩溶灌区水文的特殊性和脆弱性。针对西南岩溶灌区水文特点,在对自然流域水文模型SWAT改进的基础上,构建岩溶灌区分布式水文模型。建立的岩溶灌区分布式水文模型主要添加了表层岩溶带水循环模块、岩溶地下河汇流过程,改进浅层岩溶水计算方法、稻田水分循环模块、渠系渗漏计算模块,增加塘堰的灌溉功能等,并介绍了模型的流域离散方法和水循环结构。岩溶灌区分布式水文模型的构建可为西南岩溶灌区水文特性及其对变化环境的响应等研究提供有效的工具和手段。
The paper analyzed the speciality and vulnerability of hydrology in southwest karst irrigated area from hydrology of karst and irrigation area.According to the hydrologic characteristics in southwest karst irrigated area,a distributed hydrological model for karst irrigated area was developed based on SWAT（Soil and Water Assessment Tool）.The epi-karst zone water cycle module,underground river system module,canal seepage module and irrigation function of pond were added into SWAT,and the irrigation water movement,paddy field water balance module in SWAT model were improved.The spatial discretization method and model structure for karst irrigated area were analyzed.The distributed hydrological model is a useful tool for studying the influence of human activity and climate change on the hydrology in karst irrigated area.
出处
《水资源与水工程学报》
2011年第4期11-15,共5页
Journal of Water Resources and Water Engineering
基金
国家自然科学基金项目(51009031)
水资源与水电工程科学国家重点实验室开放基金(2010B069)
关键词
岩溶灌区
水文特性
分布式水文模型
SWAT
karst irrigation area
hydrology characteristics
distributed hydrological model
SWAT
