Moderating effects of the geometry of reservoirs on the relation between urban land use and water quality

Hwang, Soon‐Jin; Lee, Sang‐Woo; Son, Ju-Youn; Park, Geun-Ae; Kim, Seong-Joon

doi:10.1016/j.landurbplan.2007.02.007

Cited by 31 publications

(17 citation statements)

References 41 publications

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“…For example, impounded streams and rivers have the classic dendritic shape, with elongated tendrils and a single linear edge, and simplified water body shapes are associated with urban activities (Hwang et al 2007). Hwang et al (2007) observed that urban land cover simplified the shape of reservoirs, and that the simplification of the shoreline also correlated with decreases in oxygen demand and phosphorus concentrations. Shape may provide a useful signature of the type and extent of alteration in cities.…”

Section: Mechanisms Leading To Hydrographic Differencesmentioning

confidence: 99%

Morphological characteristics of urban water bodies: mechanisms of change and implications for ecosystem function

Steele

Heffernan

2014

Ecological Applications

108

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Abstract. The size, shape, and connectivity of water bodies (lakes, ponds, and wetlands) can have important effects on ecological communities and ecosystem processes, but how these characteristics are influenced by land use and land cover change over broad spatial scales is not known. Intensive alteration of water bodies during urban development, including construction, burial, drainage, and reshaping, may select for certain morphometric characteristics and influence the types of water bodies present in cities. We used a database of over one million water bodies in 100 cities across the conterminous United States to compare the size distributions, connectivity (as intersection with surface flow lines), and shape (as measured by shoreline development factor) of water bodies in different land cover classes. Water bodies in all urban land covers were dominated by lakes and ponds, while reservoirs and wetlands comprised only a small fraction of the sample. In urban land covers, as compared to surrounding undeveloped land, water body size distributions converged on moderate sizes, shapes toward less tortuous shorelines, and the number and area of water bodies that intersected surface flow lines (i.e., streams and rivers) decreased. Potential mechanisms responsible for changing the characteristics of urban water bodies include: preferential removal, physical reshaping or addition of water bodies, and selection of locations for development. The relative contributions of each mechanism likely change as cities grow. The larger size and reduced surface connectivity of urban water bodies may affect the role of internal dynamics and sensitivity to catchment processes. More broadly, these results illustrate the complex nature of urban watersheds and highlight the need to develop a conceptual framework for urban water bodies.

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Section: Mechanisms Leading To Hydrographic Differencesmentioning

confidence: 99%

Morphological characteristics of urban water bodies: mechanisms of change and implications for ecosystem function

Steele

Heffernan

2014

Ecological Applications

108

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“…In agreement with Baker (2003), our results emphasize the importance of understanding unique regional characteristics of both human and environmental relationships between land use and water quality. It is important to note that land use per se does not cause pollution; rather, human activities on the land determine the types and extent of pollution (e.g., Hwang et al, 2007). Measuring land use types within watersheds can be a convenient, indirect method of projecting human activities and can allow for cautious generalizations of the relationships between land use and water quality.…”

Section: Regional Relationships Between Land Uses and Water Qualitymentioning

confidence: 99%

Landscape ecological approach to the relationships of land use patterns in watersheds to water quality characteristics

Lee

Hwang

Lee

et al. 2009

Landscape and Urban Planning

Self Cite

469

236

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“…The fourth water body at the fringe is not protected and the area of this water body is decreasing by continuous earth filling to extend housing area. In a study by Hwang et al (2007) it was identified that "Urban land use within a watershed affects the water quality of the adjacent water reservoirs, and that the magnitude of this impact might depend on the shape complexity of the reservoirs". Their results also identified that human related land use is always associated with simple geometric shape of the water reservoirs, whereas the shape of the water reservoirs located in the area not effected by anthropogenic activities are mostly complex.…”

Section: Generalmentioning

confidence: 99%

“…Urban wetlands with complex shape in its natural form can positively contribute to water quality while simultaneously moderating the negative effects of land use and increasing the cooling capacity of urban wetland (Hwang et al 2007). …”

Section: Urban Micro-climatic Measurementmentioning

confidence: 99%

Study of Urban Water Bodies in View of Potential for Micro-climatic Cooling and Natural Purification of Waste Water

Shahjahan

Ahmed

2016

Balanced Urban Development: Options and Strategies for Liveable Cities

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Urban wet lands and water bodies can reduce overheating of the urban environment as well their general function of natural water purification. Nonetheless, urban wetlands are either diminishing or contracted from their original shape and size due to pressures from the housing sector and unplanned urbanisation. This chapter presents the findings of a study investigating into the possible relationships existing between water quality of urban and peri-urban water bodies and three selected parameters; shape complexity, micro-climatic temperature and land use around water bodies. For this reason three urban and one peri-urban water bodies in Dhaka have been studied with regard to those four parameters. The study was conducted by both parametric techniques and field campaigns.

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Moderating effects of the geometry of reservoirs on the relation between urban land use and water quality

Cited by 31 publications

References 41 publications

Morphological characteristics of urban water bodies: mechanisms of change and implications for ecosystem function

Morphological characteristics of urban water bodies: mechanisms of change and implications for ecosystem function

Landscape ecological approach to the relationships of land use patterns in watersheds to water quality characteristics

Study of Urban Water Bodies in View of Potential for Micro-climatic Cooling and Natural Purification of Waste Water

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