YAO Zhi-hong,YANG Qing-ke,WU Zhe,et al.Study on A Computational Method of District RunoffⅠ-Algorithm Design[J].Research of Soil and Water Conservation,2006,13(05):306-308.
区域尺度降雨径流估算方法研究Ⅰ-算法设计
- Title:
- Study on A Computational Method of District RunoffⅠ-Algorithm Design
- Keywords:
- regional soil and water loss; runoff; algorithm design; GIS
- 分类号:
- TP79;S157
- 摘要:
- 径流是区域水土流失的基础.基于已有试验研究和观测数据,结合GIS空间分析功能,初步提出了区域径流计算的基本思路,并对降雨径流产生的各个环节做出了算法设计,考虑的过程包括降水、植被截留、入渗、微地形存储、地表径流等.基于DEM将流域划分为规则网格并以此为基本计算单元,将月降水过程划分为若干时段作为计算迭代的基本单元,本算法可以计算出区域内每一网格单元任一时段末的地表径流量,为进一步建立区域水土流失模型奠定了基础.
- Abstract:
- Runoff is an essential factor for regional soil and water loss.A set of algorithm for regional runoff estimation is initially designed based on the previous research,incorporated with GIS function.The process considered includes precipitation,interception,infiltration,storage in micro depressions,overland flow and so on.The region is divided into regular cells based on DEM,and the monthly process of rainfall is divided into time steps.The individual cell and time step are regarded as basic computing units.Runoff at the end of any time step can be calculated in each cell.It will lay a foundation for district soil erosion model.
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备注/Memo
收稿日期:2006-6-5。
基金项目:农业部948项目“土壤侵蚀及其环境效应评价模型”(2003-Z57);中国科学院知识创新重要研究方向项目;“黄土高原水土保持的区域环境效应研究”(KZCX3-SW-421)
作者简介:姚志宏(1970- ),女,在读硕士生,主要研究方向:基于GIS的区域水土流失定量评价,