BP Network Model Research on Water and Salt Transfer Forecast in Seasonal Freezing and Thawing Soils

摘要：

Prediction and simulation of water and salt transfer in freezing-thawing soils has always been of great attention and difficult research on the physics of frozen soils and soil water science.Inner Mongolia Hetao Irrigation District is a typical seasonal frozen soils area in western China.Salt and alkali accumulation especially ground freezing and thawing occurs every year.It is considered that the movement and distribution rule of frozen soil water and salt is one of significant factors on the evolution and transition of soil salinity and alkalinity.Based on field measurements for 5 years(1994-1998)over-winter in Hetao Irrigation District,this paper established the model of artificial neural network on soil water and salt transfer under freezing-thawing conditions.The results show that BP network of ten factors can reflect the coupling relation between soft water and salt under freezing and thawing conditions.The BP network can forecast field coupling transfer of soil water and salt under freezing and thawing conditions accurately.This study brings forward an effective and feasible method for management of irrigation district and forecast of soil water and salt transfer under freezingthawing conditions.

关键词： freezing-thawing soils water and salt transfer BP network

作者: Li Ruiping Shi Haibing Zou Chunxia

作者单位: College of Water Conservancy and Civil Engineering,Inner Mongolia Agricultural University,Huhhot,01 College of Water Conservancy and Civil Engineering,Inner Mongolia Agricultural University,Huhhot,010

会议类型: 国际会议

会议名称: International Conference on Effective Utilization of Agricultural Soil & Water Resources and Protection of Environment and the 4th Annual Academic Conference of Chinese Society of Agricultural Soil and Water Engineering

会议地点: 南京

会议语种:英文

页码: 129-133

在线出版日期: 2006-08-16（万方平台首次上网日期，不代表论文的发表时间）