| 基于空间数据库和GIS的SPAC系统水分运动模型 |
| |
| 引用本文： | 张圣微,雷玉平,郑 力,李红军,王晓磊,姚 琴,赵鸿彬.基于空间数据库和GIS的SPAC系统水分运动模型[J].农业工程学报,2008,24(4):1-8. |
| |
| 作者姓名： | 张圣微 雷玉平 郑 力 李红军 王晓磊 姚 琴 赵鸿彬 |
| |
| 作者单位： | 1. 中国科学院遗传与发育生物学研究所农业资源研究中心,石家庄,050021;中国科学院研究生院,北京,100049
2. 中国科学院遗传与发育生物学研究所农业资源研究中心,石家庄,050021 |
| |
| 基金项目： | 中国科学院知识创新工程项目
,
欧盟FP6项目 |
| |
| 摘 要： | 农田SPAC系统水分空间变异通常较大,一维模型无法反应区域农田水分的运动和空间分布.该研究以空间数据库和组件式GIS为基础,结合适于北方平原农田水文过程的机理公式,开发出可以在ArcMAP(ESRITM)中加载的区域SPAC系统水分运动模拟工具,该工具结合GIS空间分析功能、空间数据库管理和水文过程数值模拟于一体,可以模拟计算SPAC系统水分的时空分布和运动,并提供二维或三维的输出结果.模型由多个数据处理和过程计算子模块组成,可模拟SPAC系统内土壤水分动态和蒸散量.验证表明,区域土壤水分模拟绝对误差在0.05(即体积含水量相差5%)以下的栅格点数达到总计算区域栅格数的95.61%;蒸散量验证显示,玉米生长季平均绝对误差为0.15 mm,平均相对误差为3.1%;小麦生长季平均绝对误差为0.13 mm,平均相对误差为5%.
|
| 关 键 词： | SPAC 水文模型 空间数据库 组件GIS 水平衡 蒸散发(ET) 降雨截留 |
| 文章编号： | 1002-6819(2008)-4-0001-08 |
| 收稿时间： | 2007/6/11 0:00:00 |
| 修稿时间： | 2007年6月11日 |
SPAC system water movement model based on GIS and spatial database |
| |
| Zhang Shengwei,Lei Yuping,Zheng Li,Li Hongjun,Wang Xiaolei,Yao Qin and Zhao Hongbin.SPAC system water movement model based on GIS and spatial database[J].Transactions of the Chinese Society of Agricultural Engineering,2008,24(4):1-8. |
| |
| Authors: | Zhang Shengwei Lei Yuping Zheng Li Li Hongjun Wang Xiaolei Yao Qin and Zhao Hongbin |
| |
| Institution: | Center for Agricultural Resources Research, Institute of Genetic and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021, China,Center for Agricultural Resources Research, Institute of Genetic and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021, China,Center for Agricultural Resources Research, Institute of Genetic and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021, China,1. Center for Agricultural Resources Research, Institute of Genetic and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021, China; 2.Graduate University of the Chinese Academy of Sciences, Beijing 100049,China,1. Center for Agricultural Resources Research, Institute of Genetic and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021, China; 2.Graduate University of the Chinese Academy of Sciences, Beijing 100049,China,1. Center for Agricultural Resources Research, Institute of Genetic and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021, China; 2.Graduate University of the Chinese Academy of Sciences, Beijing 100049,China and 1. Center for Agricultural Resources Research, Institute of Genetic and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050021, China; 2.Graduate University of the Chinese Academy of Sciences, Beijing 100049,China |
| |
| Abstract: | The spatial variation of water in crop field soil-plant-atmosphere-continuum(SPAC) is often significant. One-dimension model could not describe the spatial distribution and movement of water accuracy. This study presents a regional SPAC water movement tool based on spatial database and ComGIS. It integrates hydrological process function that is suitable for north-China plain. This tool can be loaded in ArcMap(ESRITM) as a tool-box. The model combines spatial analyses, spatial database management and simulation of hydrological process. The results of SPAC water movement simulation can be outputted two-dimension or three-dimension. It is consisted by several submodules, also can be used for estimating evapotranspiration(ET). The validation of the model shows that the grid number absolute error bellowing 0.05 is 95.61% in regional soil moisture simulation. In wheat ET simulation the absolute error and average relative error are 0.15mm and 3.1%, respectively. In summer corn ET simulation the absolute error and average relative error are 0.13mm and 5%, respectively. |
| |
| Keywords: | SPAC hydrological model spatial database ComGIS water balance evapotranspiration(ET) precipitation interception |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《农业工程学报》浏览原始摘要信息 |
| 点击此处可从《农业工程学报》下载免费的PDF全文 |
|
