Quantitative and qualitative analysis of groundwater affected by land use change مقاله

نویسنده: Javadi، Sh ؛ Zehtabian، Gh.R ؛ Jafary، M ؛ Abolhasani، A ؛

نویسنده مسئول: Khosravi، H ؛

DESERT Winter & Spring 2020, Volume 25 - Number 1 (‎11 صفحه - از 65 تا 75 )

کلیدواژه ها: GIS ENVI Groundwater Quality Land use Changes Groundwater Table Eshtehard <Param Name=value>GIS, ENVI</Param>

چکیده:

Compared to surface water, groundwater resources are the primary source of water supply in arid and semi-arid regions of Iran, hence the importance of the management of these resources . In this regard, we assessed the effects of landuse changes on the qualitative and quantitative status of groundwater resources in Eshtehard region, Iran. Through processing and analyzing the satellite images, the region was divided into six different land uses, namely agricultural lands, Haloxylon planted area, bareland, saline lands, rangelands, and urban areas; the maps pertaining to these land uses were then prepared. The ground water table fluctuation was assessed via the quantitative data of wells in the study area during 2000-2014. IDW interpolation method was employed to study the spatial variations of parameters, such as EC, Na, SAR, and TDS; afterwards, the maps related to the qualitative and quantitative changes in groundwater were prepared. The results showed that the rangelands, bare lands, and urban areas increased, and the agricultural lands decreased during the studied period. There was more reduction in groundwater table whereas water quality dropped. Generally, water quality was reduced from west to east, and there was more decrease in groundwater table from south to north. It could be deduced that human and natural factors, particularly over exploitation of groundwater, were the main reasons for these changes.

خلاصه ماشینی:

In this regard, we assessed the effects of land use changes on the qualitative and quantitative status of groundwater resources in Eshtehard region, Iran. It is necessary to assess the effects of land use changes on groundwater resources because compared to surface water, these resources have more advantages such as better quality and lower pollution, and they are the primary source of water supply in arid and semi-arid regions(Xu et al. (2018) investigated the effects of land use changes on groundwater resources of the lower Shiwalik hills, in Rupnagar, Punjab, India during 17 years; for this purpose, they utilized remote sensing and GIS techniques, images of IRS and LISS sensors, and groundwater quantitative and qualitative data. Chen (2008) assessed the effect of land use changes on groundwater resources using satellite images in Ansan city, Korea and concluded that the increased urban and industrial areas led to groundwater reduction. As a result, it is essential to study the effect of land use changes on water resources (Wittenberg, 2015). On the other hand, human activities and improper management resulted in land use changes, thereby reducing groundwater surface in the study area. (2018) investigated the effects of land use changes on groundwater quality in the Johannesburg region; Rossiter et al. According to the results, the reduced groundwater quality and quantity in the study area was due to the land use changes and also the inappropriate management. In conclusion, land use changes had important effects on groundwater quality and quantity in Eshtehard region over the study period.

دریافت فایل ارجاع :
(پژوهیار, , , )

دانلود PDF
دانلود HTML

لینک کوتاه:

صفحه:

ورود / عضویت

برای مشاهده متن مقاله و یا دانلود آن لازم است وارد پایگاه شوید. در صورتی که عضو نیستید از قسمت عضویت اقدام فرمایید.

ورود

عضویت

تحتاج دخول لعرض محتوى المقالة. إذا لم تكن عضوًا ، فتابع من الجزء الاشتراک.
إن كنت لا تقدر علی شراء الاشتراك عبرPayPal أو بطاقة VISA، الرجاء ارسال رقم هاتفك المحمول إلی مدير الموقع عبر webmaster@noormags.com .

You need Sign in to view the content of the article. If you are not a member, proceed from part Sign up.
If you fail to purchase subscription via PayPal or VISA Card, please send your mobile number to the Website Administrator via webmaster@noormags.com .

ورود / عضویت

ورود

عضویت