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林业科学 ›› 2004, Vol. 40 ›› Issue (4): 2-8.doi: 10.11707/j.1001-7488.20040401

• 论文及研究报告 •    下一篇

苹果-小麦复合系统SPAC水分运移模拟模型

张劲松 孟平   

  1. 中国林业科学研究院林业研究所,国家林业局林木培育重点实验室北京100091
  • 收稿日期:2003-12-15 修回日期:1900-01-01 出版日期:2004-07-25 发布日期:2004-07-25

Model on Water Transfer of SPAC in Apple-Wheat Multiplex System

Zhang Jinsong,Meng Ping   

  1. Research Institute of Forestry, CAF Key Laboratory of Forest Silviculture of the State Forestry Administration Beijing100091
  • Received:2003-12-15 Revised:1900-01-01 Online:2004-07-25 Published:2004-07-25

摘要:

根据土壤-植物-大气连续体(SPAC)水分传输理论原理,充分考虑农林复合系统的特殊性和复杂性,建立太行山低山丘陵地苹果-小麦复合系统SPAC水分运移模拟模型,该模型具有二维空间属性。采用数值计算法求解模型方程,利用土壤水分实测数据对模型进行验证,结果表明:168对模拟值与实测值相对误差的平均值为6.89% ,线性相关系数r可达0.8367,t=0.197<t3340.01=2.568。

关键词: 苹果-小麦复合系统, SPAC, 水分运移模型

Abstract:

Based on the water transfer theories of SPAC, Model on water transfer of SPAC with two spatial dimensions in the apple-wheat multiplex system were developed in the hilly area of Taihang Mountain, which were verified with the experimental data on soil water. The results showed that the estimated value of soil water had good agreement with the measured, and that the linear correlation coefficient r between them was 0.836 7(n=168), the average relative error was 6.89%,t=0.197<t3340.01=2.568.The developed model will estimate the spatial and temporal value of transpiration from wheat and tree, water uptake by roots of wheat and tree, and soil water content.

Key words: Apple-wheat multiplex system, SPAC, Water transfer model