Effect of land use types on stream water quality under seasonal variation and topographic characteristics in the Wei River basin, China

Yu, Songyan; Xu, Zongxue; Wu, Wenbin; Zuo, Depeng

doi:10.1016/j.ecolind.2015.06.029

Cited by 192 publications

(112 citation statements)

References 33 publications

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“…Tu 2011), urban runoff generally has been considered a major non-point source of pollutants within catchments (e.g. Yu et al 2016). Direct relationships have been reported between pollutant concentrations and percentage urban surface (e.g.…”

Section: Introductionmentioning

confidence: 98%

Dynamics of surface water quality driven by distinct urbanization patterns and storms in a Portuguese peri-urban catchment

et al. 2016

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Purpose Although the influences of urban land use on water quality have been widely investigated, the impacts of different urbanization patterns, particularly in Mediterranean environments, are not well understood. Focussing on a Portuguese peri-urban catchment with 40 % urban cover, this paper explores (1) the impact of areas with differing urban extent and storm drainage system on streamwater quality and (2) temporal variations driven by season and storm events of differing magnitude, intensity and antecedent weather. Materials and methods Water quality was assessed at the catchment outlet (E) and for three upstream tributaries: (1) Porto Bordalo (PB), 39 % urban with a new major road and piping of some overland flow from impervious surfaces directly into the stream; (2) Espírito Santo (ES), 49 % urban, mostly comprising detached houses surrounded by gardens, and with overland flow infiltrating into downslope pervious soils; and (3) Quinta (Q), 22 % urban with partial piping of overland flow from a recent enterprise park area. Water samples were collected at different stages in storm hydrograph responses to ten rainfall events from October 2011 to March 2013. The water quality variables analysed included chemical oxygen demand (COD), nutrients (Kjeldahl nitrogen [Nk-N], ammonium , nitrate [NO 3 -N] and total dissolved phosphorus (TDP) and heavy metals (Zn and Cu). Results and discussion Urban areas had great impact on COD, with the highest median concentrations in ES and the lowest in Q. In ES, fertilizing lawns and gardens may have been responsible for its higher median NO 3 -N concentrations. High concentrations of heavy metals were recorded in PB and Q, probably due to the piping of road runoff directly into the stream. Generally, higher pollutant concentrations were recorded in the first storm events after the summer drought due to the flushing of accumulated solutes and a lower dilution effect, with Nk-N and NH 4 -N exceeding water quality standards. Over the wet season, increasing soil moisture favoured greater flow connectivity between runoff processes from pollutant sources and the stream network, leading to a higher proportion of samples exceeding pollution thresholds. Conclusions No direct relationship was identified between urban extent and water quality, possibly due to the overriding impact of different storm drainage systems and flow connectivities of different urban patterns. Hydrological regime, linked to seasonal changes, also exerted a major influence on the water quality dynamics. Information on the spatiotemporal dynamics of pollutants, linked to different urban patterns and storm drainage systems, should help enable urban planners to minimize the adverse impacts of urbanization on aquatic ecosystems.

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Section: Introductionmentioning

confidence: 98%

Dynamics of surface water quality driven by distinct urbanization patterns and storms in a Portuguese peri-urban catchment

et al. 2016

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“…The quality of water is relevant to determine its use, as well as being a management and pollution indicator (Laino-Guanes et al 2016, Yu et al 2016). Water quality variables allow to have a vision of a specic moment, and serve as a baseline to observe the changes or trends DOI: 10.19136/era.a5n13.1334 www.ujat.mx/era Musálem-Castillejos et al Water quality of the Grijalva River Ecosist.…”

Section: Introductionmentioning

confidence: 99%

Water quality of the Grijalva river in the Chiapas and Tabasco border

Musálem¹,

R²,

Bello-Mendoza

et al. 2018

Ecosist. Recur. Agropec.

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The objective was to characterize water quality for a section of the Grijalva River and its tributaries, for rainy and dry season in the border of the States of Chiapas and Tabasco. 23 physical, chemical, and microbiological parameters as well as contaminants were determined and compared with the Mexican norm NOM-127-SSA1-1994 which establishes water quality maximum permissible limits for use and human consumption and with the water quality classi cation scale proposed by the Comisión Nacional del Agua. Water quality of the Grijalva River in the studied section and tributaries, also locally named Almandros river, decreases as it descends to more populated areas of Tabasco. Water turbidity and high levels of coliforms and Escherichia are the main problems associated with the rivers of the studied area, even in water sources destined for human consumption. Other studied parameters have acceptable water quality mainly during the dry season, except for Mercury, which showed higher levels than the recommended by the norm in all sampling sites. The need to further study presence of Mercury in the Grijalva River basin is suggested.

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“…HCA and FA performed on the river water samples depicted three distinct water groups based on major ion composition; urban wastewater, agricultural runoff and mixed water. However, compared to the previous researches (e.g., Wayland et al 2003;Yu et al 2016), these urban waste water and agricultural runoffs showed a little difference in ion composition. Unusual high concentration of Na + and K + and low concentration of NO 3 − and PO 4 3− in the agricultural stream compared with the urban wastewater reflects the presence of shrimp farm end-products in the agricultural sites.…”

Section: Discussionmentioning

confidence: 71%

Hydrochemistry, water quality and land use signatures in an ephemeral tidal river: implications in water management in the southwestern coastal region of Bangladesh

et al. 2018

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Despite its complexity and importance in managing water resources in populous deltas, especially in tidal areas, literatures on tidal rivers and their land use linkage in connection to water quality and pollution are rare. Such information is of prior need for Integrated Water Resource Management in water scarce and climate change vulnerable regions, such as the southwestern coast of Bangladesh. Using water quality indices and multivariate analysis, we present here the land use signatures of a dying tidal river due to anthropogenic perturbation. Correlation matrix, hierarchical cluster analysis, factor analysis, and bio-geo-chemical fingerprints were used to quantify the hydro-chemical and anthropogenic processes and identify factors influencing the ionic concentrations. The results show remarkable spatial and temporal variations (p < 0.05) in water quality parameters. The lowest solute concentrations are observed at the mid reach of the stream where the agricultural and urban wastewater mix. Agricultural sites show higher concentration of DO, Na + and K + reflecting the effects of tidal spill-over and shrimp wastewater effluents nearby. Higher level of Salinity, EC, Cl − , HCO 3 − , NO 3 − , PO 4 3− and TSS characterize the urban sites indicating a signature of land use dominated by direct discharge of household organic waste into the waters. The spatial variation in overall water quality suggests a periodic enhancement of quality especially for irrigation and non-drinking purposes during monsoon and post-monsoon, indicating significant influence of amount of rainfall in the basin. We recommend that, given the recent trend of increasing precipitation and ground water table decrease, such dying tidal river basins may serve as excellent surface water reservoir to supplement quality water supply to the region.

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Effect of land use types on stream water quality under seasonal variation and topographic characteristics in the Wei River basin, China

Cited by 192 publications

References 33 publications

Dynamics of surface water quality driven by distinct urbanization patterns and storms in a Portuguese peri-urban catchment

Dynamics of surface water quality driven by distinct urbanization patterns and storms in a Portuguese peri-urban catchment

Water quality of the Grijalva river in the Chiapas and Tabasco border

Hydrochemistry, water quality and land use signatures in an ephemeral tidal river: implications in water management in the southwestern coastal region of Bangladesh

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