Volume 1, Number 1 (2-2013)                   DEEJ 2013, 1(1): 39-50 | Back to browse issues page


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Abstract:  

In arid and semi-arid ecosystems shortage of surface water has led to a greater use of
groundwater resources. Water table in groundwater due to climate and human intervention is
always fluctuating. Assessing change groundwater resource in planning and sustainable
management of water resources in each region has of great importance. In this study were
investigated changes of water table in the plain aquifer Aspas. For this purpose monthly data
of 30 well of groundwater observation to demonstrate groundwater fluctuations in statistics
course (2002_2009) was used and using nonparametric tests Mann - Kendall and Spearman
significant trend for monthly and annual time series were evaluated at a significance level of
95%. For each series, the slope of trend line was computed using Sen's Estimator method.
The results showed that in all stations (except stations Pahlevani side drainage and riverside
Hajiabad, Babai, kenas - sefli and kenas sefla) groundwater level has a negative trend. Mann -
Kendall showed that nearly 83 percent of stations have negative significant trends.
Investigate slope of trend line in the Aspas plain shows that water table declined 73.5
centimeter in each year.

Type of Study: Research | Subject: General
Received: 2012/06/4 | Accepted: 2012/12/10 | Published: 2013/02/3

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نظرات کاربران
نظر ارسال شده توسط نام یا پست الکترونیک در تاریخ 2017/05/29
sajjad2552@gmail.com

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