自然资源学报

自然资源学报 ›› 2005, Vol. 20 ›› Issue (1): 132-139.doi: 10.11849/zrzyxb.2005.01.019

• 研究方法 • 上一篇    下一篇

基于GIS的黄土高原小流域土壤水分时空分布模拟——以定西安家沟为例

张秀英1, 冯学智1, 赵传燕2,3   

  1. 1. 南京大学城市与资源学系, 南京 210093;
    2. 兰州大学西部环境教育部重点实验室, 兰州 730000
  • 收稿日期:2004-07-22 修回日期:2004-08-18 出版日期:2005-02-25 发布日期:2005-02-25
  • 作者简介:张秀英(1977-),女.河北滦县人.在读博士生.主要从事遥感和地理信息系统应用力而的研究.
  • 基金资助:

    教育部高等学校骨干教师资助项目(40025105)资助.

GIS-assisted Modeling of Temporal and Spatial Distribution of Soil Water Content in Loess Plateau- A Case Study in Anjiagou Catchment

ZHANG Xiu-ying1, FENG Xue-zhi1, ZHAO Chuan-yan2,3   

  1. 1. Department of Urban and Resources , Nanjing University, Nanjing 210093, China;
    2. National Laboratory of Western China's Environmental Systems, Lanzhou 730000, China;
    3. State Key Laboratory of Frozen Soil Eog., Cold and Arid Region Environmental and Engineering Research Institute, CAS, Lanzhou 730000, China
  • Received:2004-07-22 Revised:2004-08-18 Online:2005-02-25 Published:2005-02-25

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被引次数

69

摘要： 土壤水是黄土高原生态环境的主控因素,进行土壤水时空分布的模拟对黄土丘陵区农业生产、植被恢复和土地合理利用及配置具有重要的指导意义。从水量平衡的角度出发,采用GIS软件Arc/Info的GRID数据结构,对定西县安家沟小流域影响土壤水分时空分布的要素:降雨、径流和蒸散(发)进行了空间分布的模拟,并利用实测土壤水分数据进行检验,合格率达到83.146%。结果表明,利用水量平衡原理并对参数进行一定的化简进行黄土高原土壤水分的模拟是可行的。

关键词: 土壤水分, 时空分布, GIS, 黄土高原, 安家沟

Abstract: Soil water content is a key factor influencing the ecological environment in the Loess Plateau of China.Thus,modeling temporal and spatial distribution of soil water content in loess hill region is of theoretical significance in the ecological restoration and also of practical signifi-cance in land use management.This study is accomplished by employing water balance-based model.The research uses GRID data structure in the GIS software of Arc/Info and uses its AML (Arc Macro Language)to program to model the spatially distributed soil water content every ten days from April to October.First,the spatial distribution of precipitation is considered uniform according to the situation of the study area.Second,the SCS model is employed to calculate the distributed spatial runoff.Third,Butikle method is employed to model the distributed spatial actual evapotranspiration and the Hargreaves equation is used to model the spatial distribution of potential evaporation.Finally,we obtain the spatial distribution of soil water content in Anjiagou catchment area.The eligibility ratio of the simulated soil moisture is 83.146% through the measured soil data,which shows the method of dealing with the parameters of the water balance-based model is reasonable.

Key words: Anjiagou catchment, soil water content, spatial and temporal distribution, GIS, Loess Plateau

中图分类号: 

  • S152.7