Numerical Simulation and Verification of Soil Phosphorus Transport under Environmental Pollution Condition Caused by Cow Manure
This paper had taken field experiment to study the influence to soil phosphorus content by heaping cow manure on the land under the artificial rainfall condition. The monitoring results show that heaping cow manure on the field has obvious influence to soil phosphorus and keep a long time. After 80 days, the total phosphorus and available phosphorus of 0-15cm soil layers all have obvious increase, the 0-5cm soil layer has the biggest increment: the total phosphorus increase 163.36mg·kg-1 and available phosphorus increase 5.77 mg·kg-1. The soil phosphorus moving distance less than 15cm, has little effect to groundwater. At the same time, on the basis of soil water movement and solute transport in unsaturated soil theories, using HYDRUS-1D software, one dimensional mathematical transport model of phosphorus in soil was established, which is on the condition of heaping cow manure on the land. The dynamic distribution and transport of phosphorus in soil has simulated by this model, and the simulative results agree with the measured data satisfactorily, proves that the model can relatively be true to reflect the distribution and transport of phosphorus in soil under dairy farms point source pollution condition, so has a positive significance to analyse phosphorus pollution of soil and to evaluate environment pollution risks of breeding industry.
cow manure environmental pollution soil phosphorus transport numerical simulation
SHAN Jie SHAO Xiaohou
College of Agricultural Engineering, Hohai University, Nanjing 210098, Jiangsu, China
国际会议
2007环境科学与技术国际会议(The 2007 International Symposium on Environmental Science and Technology)
北京
英文
2007-11-13（万方平台首次上网日期，不代表论文的发表时间）