区域尺度农田水盐动态模拟模型—GSWAP
由于土壤和水文气象等因子的空间变异性,区域尺度的农田水盐动态难以应用小尺度一维模型进行模拟。该文将一维农田水文模型(soil-water-atmosphere-plantmodel,SWAP)与ArcInfo进行紧密结合,构建了区域尺度的农田水盐动态模拟模型-GSWAP。该模型利用GIS强大的空间数据分析与处理功能,可高效地进行模型数据的前后处理与分析。模型将研究区划分为多个均质单元进行模拟,并以RS反演的表土含水率和ETa为观测资料,运用遗传算法确定各单元等效土壤水力参数。该文以内蒙河套灌区永联试验区为背景,对GSWAP模型进行了应用分析。结果表明,应用GSWAP模型可高效地进行区域农田水盐...
Saved in:
Published in | 农业工程学报 Vol. 27; no. 7; pp. 58 - 63 |
---|---|
Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
中国-以色列国际农业研究培训中心,北京100083%内蒙古农业大学水利与土木建筑工程学院,呼和浩特,010018
2011
中国农业大学水利与土木工程学院,北京100083 |
Subjects | |
Online Access | Get full text |
ISSN | 1002-6819 |
DOI | 10.3969/j.issn.1002-6819.2011.07.010 |
Cover
Summary: | 由于土壤和水文气象等因子的空间变异性,区域尺度的农田水盐动态难以应用小尺度一维模型进行模拟。该文将一维农田水文模型(soil-water-atmosphere-plantmodel,SWAP)与ArcInfo进行紧密结合,构建了区域尺度的农田水盐动态模拟模型-GSWAP。该模型利用GIS强大的空间数据分析与处理功能,可高效地进行模型数据的前后处理与分析。模型将研究区划分为多个均质单元进行模拟,并以RS反演的表土含水率和ETa为观测资料,运用遗传算法确定各单元等效土壤水力参数。该文以内蒙河套灌区永联试验区为背景,对GSWAP模型进行了应用分析。结果表明,应用GSWAP模型可高效地进行区域农田水盐动态模拟,实现数据输入输出、可视化显示与空间分析,且永联试验区的模拟结果具有合理性。 |
---|---|
Bibliography: | 11-2047/S regional scale; GIS; genetic algorithms; soil hydraulic property; SWAP; simulation Xu Xu,Huang Guanhua,Qu Zhongyi,Huang Quanzhong,(1.College of Water Conservancy and Civil Engineering,China Agricultural University,Beijing 100083,China;2.Chinese International center for Research and Training in Agriculture,Beijing 100083,China;3.Water Conservancy and Civil Engineering College,Inner Mongolia Agricultural University,Hohhot 010018,China) Due to the spatial variability of soil hydraulic properties and hydrological factors,field scale models with one-dimensional structure were not applicable to the regional scale modeling.A distributed model,which is named as GSWAP,was developed for simulating soil water flow and salt transport on a regional scale by closely coupling the Soil-Water-Atmosphere-Plant(SWAP) model and ArcInfo.The data of GSWAP can be efficiently pre/post processed based on the strong capabilities of spatial data analysis and processing in ArcInfo.The study area was divided into subunits through |
ISSN: | 1002-6819 |
DOI: | 10.3969/j.issn.1002-6819.2011.07.010 |