Arid
DOI10.1134/S0097807818020100
Changing Land Use a Threat to Surface Water Quality: a Vulnerability Assessment Approach in Zanjanroud Watershed, Central Iran
Mirhosseini, Mahsa1; Farshchi, Parvin1; Noroozi, Ali Akbar2; Shariat, Mahmood1; Aalesheikh, Ali Asghar3
通讯作者Farshchi, Parvin
来源期刊WATER RESOURCES
ISSN0097-8078
EISSN1608-344X
出版年2018
卷号45期号:2页码:268-279
英文摘要

Maintaining the quality of surface water resources as one of the most vital water supplies has always been at the center of global concerns. A set of manifest and latent factors have yet been identified by researchers worldwide that are subject to affect the quality of surface water. Among which, the effect of land use change, due to a spatial and temporal complexity, is often not easily verifiable. The present study attempts to offer an index-based model to quantify vulnerability of surface water resources in a semi arid basin in central Iran against land use changes. For this, water quality data including Na, K, Mg, Ca, Sodium Adsorption Ratio (SAR), total anions (Sum. A), SO4, Cl, HCO3, EC, TDS, and pH were collected from hydrometric stations over a period of 26 years (1987-2013). In order to detect land use changes, the land use maps of the years 1987, 1998, 2002, 2009, and 2013 were prepared from TM satellite images using supervised classification method. At next step, changing patterns of different land uses were traced by Shanon’s Diversity Index (SHDI) as a metric of patch diversity indicating diversity and heterogeneity of a landscape over time. Relationship between the SHDI values and water quality indicators revealed the impact of land use changes on quality of surface water resources. Statistical analysis confirmed a significant relationship between nine water quality factors and water discharge in the basin during the study period. From 1998 to 2009, the greatest changes were visible in the total anions, Ca, SO4, and HCO3. These parameters along with salinity were increasing in almost all sub-basins. According to the results, conversion of poor rangelands to rain fed agriculture fields is the most apparent land use change occurred in the study area over the study period. In 1987, SHDI as an indicator of the diversity and changes in the basin, showed a significant relationship with good rangelands (R-2 = -0.835). This indicates that fragmentation of the entire watershed area was initiated in 1987, which reached its peak in 2013. Generally speaking, urbanization, poor rangeland, and irrigated agriculture were recognized as three influential land uses adversely affect the water quality in the study area.


英文关键词vulnerability surface water quality Shanon’s Diversity Index land use change detection
类型Article
语种英语
国家Iran
收录类别SCI-E
WOS记录号WOS:000434917200013
WOS关键词COVER CHANGES ; IMPACTS ; CHINA ; AREA
WOS类目Water Resources
WOS研究方向Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/213685
作者单位1.Islamic Azad Univ, Sci & Res Branch, Fac Environm & Energy, Dept Environm Sci, Tehran, Iran;
2.Soil Conservat & Watershed Management Res Ctr, Tehran, Iran;
3.KN Toosi Univ Technol, Fac Geodesy & Geomat Engn, Dept GIS, Tehran, Iran
推荐引用方式
GB/T 7714
Mirhosseini, Mahsa,Farshchi, Parvin,Noroozi, Ali Akbar,et al. Changing Land Use a Threat to Surface Water Quality: a Vulnerability Assessment Approach in Zanjanroud Watershed, Central Iran[J],2018,45(2):268-279.
APA Mirhosseini, Mahsa,Farshchi, Parvin,Noroozi, Ali Akbar,Shariat, Mahmood,&Aalesheikh, Ali Asghar.(2018).Changing Land Use a Threat to Surface Water Quality: a Vulnerability Assessment Approach in Zanjanroud Watershed, Central Iran.WATER RESOURCES,45(2),268-279.
MLA Mirhosseini, Mahsa,et al."Changing Land Use a Threat to Surface Water Quality: a Vulnerability Assessment Approach in Zanjanroud Watershed, Central Iran".WATER RESOURCES 45.2(2018):268-279.
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