Urban Land Pattern Impacts on Floods in a New District of China

Su, Weizhong; Ye, Gaobin; Yao, Shuntian; Gao, Yang

doi:10.3390/su6106488

Cited by 38 publications

(22 citation statements)

References 33 publications

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“…This study agrees with Mejía & Moglen (2009), Wagner et al (2013) and Su et al (2014) who argue that urban imperviousness patterns within catchments can play an important role in determining changes in streamflow characteristics, particularly because of changes in the fraction of flow becoming surface runoff. When the settlement area is clustered, peak flows will increase without much affecting the flow volume compared to scattered settlement (Corbett et al, 1997).…”

Section: Discussionsupporting

confidence: 92%

“…When the settlement area is clustered, peak flows will increase without much affecting the flow volume compared to scattered settlement (Corbett et al, 1997). When the urban development is located in the downstream area near the catchment outlet (as simulated in this study under the clustered scenario), more concentrated impacts can be expected compared to settlement scattered over the catchment (Su et al, 2014;Wheater & Evans, 2009). …”

Section: Discussionmentioning

confidence: 80%

“…Studies in tropical regions have shown that changes from vegetated areas into settlements may significantly reduce canopy interception and soil infiltration capacity, resulting in a large fraction of precipitation being transformed into surface runoff (Bruijnzeel, 2004;Valentin et al, 2008;Marhaento et al, 2017a). In addition, the spatial distribution of different land uses may affect the hydrological response of catchments, for example the velocity and volume of surface flow entering a stream (Wheater & Evans, 2009;Su et al, 2014). Hence, land use management can be used as a measure in water management practice for flood prevention and drought mitigation (Wheater &Evans, 2009 andZhang et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Effects of changes in land use and climate on water availability of a tropical catchment

Marhaento

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 99%

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Effects of changes in land use and climate on water availability of a tropical catchment

Marhaento

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“…Previous studies of the impact of imperviousness distribution on peak flows in urban catchments have suggested greater hydrologic impacts from land development closer to streams (Su, Ye, Yao, & Yang, ). The physical rationale of the linkage between impervious surface location and peak flow can be explained by surface runoff travel time.…”

Section: Introductionmentioning

confidence: 95%

Distribution of surface imperviousness in small urban catchments predicts runoff peak flows and stream flashiness

Roodsari

Chandler

2017

Hydrological Processes

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Urban growth is a global phenomenon, and the associated impacts on hydrology from land development are expected to increase, especially in peri-urban catchments. It is well understood that greater peak flows and higher stream flashiness are associated with increased surface imperviousness and storm location. However, the effect of the distribution of impervious areas on runoff peak flow response and stream flashiness of peri-urban catchments has not been well studied. In this study, a new geometric index, Relative Nearness of Imperviousness to the Catchment Outlet (RNICO), is defined to correlate imperviousness distribution of peri-urban catchments with runoff peak flows and stream flashiness. Study sites include 21 suburban catchments in New York representing a range of drainage area from 5 to 189 km 2 and average imperviousness from 10% to 48%. On the basis of RNICO, all development patterns are divided into 3 classes: upstream, centralized, and downstream. Results showed an obvious increase in runoff peak flows and decrease in time to peak when moving from upstream to centralized and downstream urbanization classes. This indicates that RNICO is an effective tool for classifying urban development patterns and for macroscale understanding of the hydrologic behavior of small peri-urban catchments, despite the complexity of urban drainage systems. We also found that the impact of impervious distribution on runoff peak flows and stream flashiness decreases with catchment scale. For small catchments (A < 40 km 2 ), RNICO was strongly correlated with the average (R 2 = .95) and maximum (R 2 = .91) gaged peak flows due to the relatively efficient subsurface routing through stormwater and sewer networks. Furthermore, the Richards-Baker stream flashiness index in small catchments was positively correlated with fractional impervious area (R 2 = .84) and RNICO (R 2 = .87). For large catchments (A > 40 km 2 ), the impact of impervious surface distribution on peak flows and stream flashiness was negligible due to the complex drainage network and great variability in travel times. This study emphasizes the need for greater monitoring of discharge in small peri-urban catchments to support flood prediction at the local scale.

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“…As it is experiencing rapid economic development and industrialization, rivers are overloaded with pollutants, resulting in deterioration of water quality and potential threats to the safety of functional water zones, especially for drinking water sources [1][2][3]. As such, efficient pollution control in this complex river network area is the key to water environment management of the Taihu Basin.…”

Section: Introductionmentioning

confidence: 99%

Emission Control in River Network System of the Taihu Basin for Water Quality Assurance of Water Environmentally Sensitive Areas

et al. 2017

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Abstract:As pollution incidents frequently occurred in the functional water areas of the Taihu Basin, Yangtze Delta, effective emission control to guarantee water quality in the Taihu Basin became the priority for environmental management. In this study, a new total emission control (TEC) method was proposed with an emphasis on the concept of water environmentally sensitive areas (WESAs). This method was verified in Wujiang District and the techniques can be concluded in three steps: (1) a 1-D mathematical model for the study area was established and the model was calibrated using field measurement data; (2) based on an analysis of administrative planning and regulations, WESAs were identified as the main controlling objectives for emission control calculations. The weighting coefficient of local pollution sources was investigated to discuss the effectiveness of TEC on water quality improvement at WESAs; and (3) applying the river network mathematical model, water quality along the river segments was simulated under different pollution control plans. The results proved the effectiveness of TEC in the study area and indicated that a 14.6% reduction in the total amount of ammonia-nitrogen (NH 3 -N), as well as a 31.1% reduction in the total amount of chemical oxygen demand (COD cr ), was essential in order to meet the water quality standard in the WESAs.

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Urban Land Pattern Impacts on Floods in a New District of China

Cited by 38 publications

References 33 publications

Effects of changes in land use and climate on water availability of a tropical catchment

Effects of changes in land use and climate on water availability of a tropical catchment

Distribution of surface imperviousness in small urban catchments predicts runoff peak flows and stream flashiness

Emission Control in River Network System of the Taihu Basin for Water Quality Assurance of Water Environmentally Sensitive Areas

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