New Zealand Journal of Agricultural Research abstracts
Simulation of effects of agricultural activities on groundwater
level by combining FEFLOW and GIS
Z. L. Huo
S. Y. Feng*
S. Z. Kang
S. J. Cen
Y. Ma
Centre for Agricultural Water Research in China
China Agricultural University
No. 17 Qinghua East Road, Haidian
Beijing 100083, PR China
*Author for correspondence: fengsycau@163.com
Abstract Effects of agricultural
activities are obvious in
arid-inland regions. A numerical model for two-dimensional phreatic
groundwater flow was developed based on the water budget in the Minqin
oasis, a typical arid-inland region. The spatial data of source/sink
terms were processed by combining global information system (GIS) and
the finite element subsurface flow (FEFLOW) model. The verified results
showed errors for the model of 0.37 and 0.48 m respectively in the
Quanba and Huqu areas. The groundwater level changes were simulated
with the developed model. The results indicate that groundwater level
maintained a decreasing trend of 1.8 and 1.1 m year–1
respectively in the Quanba and Huqu areas under current water resource
utilisation. Therefore, further study is needed to determine the
rational exploitation volume of groundwater and distribution schemes
for surface water
Keywords agricultural activities;
FEFLOW; GIS; groundwater
level
A07099; Online publication date 31 January 2008; Received and
accepted 10 August 2007
New Zealand Journal of Agricultural Research, 2007, Vol. 50:
839–846
0028–8233/07/5005–0839 © The Royal Society of New Zealand 2007
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