Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1134/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
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ISSN | 0097-8078 |
EISSN | 1608-344X |
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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