Watershed-Scale Impacts of Forest Buffers on Water Quality and Runoff in Urbanizing Environment

Matteo, Michelle; Randhir, Timothy O.; Bloniarz, David

doi:10.1061/(asce)0733-9496(2006)132:3(144)

Cited by 48 publications

(35 citation statements)

References 11 publications

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“…Consistent with previous studies (Matteo et al, 2006;Gill et al, 2007), our modeling work suggests that planning for urban green space offers significant potential for reducing surface runoff. Adding nearly 11% tree canopy resulted in a >30% increase in V over the entire study area.…”

Section: Benefits Of Runoff Reduction By Urban Green Spacessupporting

confidence: 89%

“…Similarly, Armson et al (2013) demonstrated that a single "tree unit" (a single tree and its pit) reduced surface runoff by >50% annually compared with asphalt. On a larger scale, afforestation results in significant reductions in runoff and sediment yield within urban catchments (Sanders, 1986;Matteo et al, 2006). In general, urban green space acts as an effective sink for receiving and storing rainwater and as an important element of urban water management.…”

Section: Introductionmentioning

confidence: 99%

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Potential reduction in urban runoff by green spaces in Beijing: A scenario analysis

Yao

Chen

Wei

et al. 2015

Urban Forestry & Urban Greening

118

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a b s t r a c tUrban green space provides multiple ecological benefits, among which the reduction of rainfall runoff is important for sustainable urban development, particularly for cities experiencing severe flooding and water hazards. However, the effectiveness of urban green space in mitigating runoff has not been fully determined. We evaluated potential reductions in surface runoff associated with urban green space in central Beijing under a greening scenario using the Soil Conservation Service Curve Number method. The results show that urban green space offers significant potential for runoff mitigation. In 2012, a total of 97.9 million m 3 of excess surface runoff was retained by urban green space; adding nearly 11% more tree canopy was projected to increase runoff retention by >30%, contributing to considerable benefits of urban rainwater regulation. At a more detailed scale, there were apparent internal variations. Urban function zones with >70% developed land showed less mitigation of runoff, while green zones (vegetation >60%), which occupied only 15.54% of the total area, contributed 31.07% of runoff reduction. Runoff reduction by urban green space, however, is influenced by many factors, such as rainfall, soil condition, and urban morphology. In regulating urban runoff, therefore, the priorities and integrating adaptive approaches to urban greening should be combined with compensatory and complementary measures.

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Section: Benefits Of Runoff Reduction By Urban Green Spacessupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Potential reduction in urban runoff by green spaces in Beijing: A scenario analysis

Yao

Chen

Wei

et al. 2015

Urban Forestry & Urban Greening

118

View full text Add to dashboard Cite

show abstract

“…These changes have an impact on the water cycle and aquatic ecosystems, due to the increase and acceleration of surface runoff, decrease of groundwater recharge and a modification of natural water pathways due to the artificial networks (e.g. Bras and Perkins, 1975;Chocat et al, 2001;Booth et al, 2002;Randhir, 2003;Matteo et al, 2006;Marsalek et al, 2007). This can lead to flooding, pollution and erosion problems within periurban rivers.…”

Section: Introductionmentioning

confidence: 99%

Evidence of the impact of urbanization on the hydrological regime of a medium-sized periurban catchment in France

Braud¹,

Breil²,

Thollet³

et al. 2013

Journal of Hydrology

141

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International audienceIn this paper we explore several indicators to evidence the impact of land use change, and particularly of urbanization/artificialization on discharge series of periurban catchments. A first set of indicators is derived from the literature and describes the monthly and annual hydrological regime, low flows and high flows, and flow components. Statistical tests are also applied to assess the existence of trends/rup-tures on the longest time series. In addition, new indicators, especially built to show the impact of sewer overflow devices (SODs) and infiltration into sewer networks are proposed. The method is applied to the Yzeron (150 km 2) catchment, located close to Lyon city (France) where various discharge gauges with a variable time step are available on sub-catchments ranging from a few to 130 km 2 (some of them nested), with a large variety of land uses (forest, agricultural land, artificialized areas). In addition, discharge is also measured in a SOD and a combined sewer network so that the relevance of the new proposed indicators can be assessed. In the largest sub-catchments, the results show a decrease of specific discharge from upstream to downstream corresponding to an increase of artificialized areas, except for high flows. When a SOD is present, the specific discharge is increased for frequencies larger than 50%, and the frequency of zero daily discharge is decreased. Waste water can be the only source of water in autumn month in a 4.1 km 2 sub-catchment. Base flow is also decreased for the most urbanized catchments. Our results confirm the impact of SODs on the modification of the flood regime, with an increase of frequent floods, but a marginal impact on the largest floods, mainly governed by saturation of the rural parts of the catchments. The decomposition of the sewer discharge shows that, on an annual basis, infiltration in the sewer network accounts for 30% of the total discharge and runoff due to rainwater to about 40% (the remaining being composed of the waste water discharge). It can explain the decrease of base flow. Our analysis shows that, for periurban catchments, a long term monitoring of nested sub-catchments and infrastructures (SODs, sewer networks) with a small time step, is very valuable and provides data allowing a quantitative assessment of the impact of urbanization on the whole hydrological regime

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“…Forest areas can also be associated with better water quality given their capacity to reduce runoff, sediments, and nutrients in surface waters. They could also have a positive influence on surface water quality by promoting water infiltration to the water tables [61].…”

Section: Agricultural Activitiesmentioning

confidence: 99%

Monitoring Recreational Waters: How to Integrate Environmental Determinants

Turgeon¹

2012

JEP

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Recreational waters are associated with a higher risk of disease for people engaged in activities that bring them into contact with these waters. The primary cause of contamination of recreational waters is fecal microorganisms, which may originate from various sources and involve several modulating factors, making it a complex public health and environmental issue. Monitoring recreational water quality should include two key components: Microbial water testing and monitoring environmental determinants associated with higher risks of contamination. Conducting both activities provides the foundation for a comprehensive assessment according to risk and the actual level of fecal pollution and thus could promote good management actions to ensure safe water quality. Nevertheless, monitoring of environmental determinants is rarely fully integrated in monitoring programs and is also harder to achieve, especially when water pollution is mainly associated with nonpoint sources. In order to achieve identification and monitoring of environmental determinants associated with fecal contamination of recreational waters, some specific steps should be followed and some questions must be answered. The objective of this review article is to present current knowledge on this topic and to suggest and discuss recommendations. Potential sources of contamination and factors able to modulate them should be identified and measured after the geographical area influencing fecal contamination of recreational water has been delineated. Statistical models have been developed to identify the relative importance of these environmental characteristics on fecal pollution of recreational waters but they do not allow for a full comprehension of the exact processes leading to this pollution, thus other methods should also be used to better understand these processes.

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Watershed-Scale Impacts of Forest Buffers on Water Quality and Runoff in Urbanizing Environment

Cited by 48 publications

References 11 publications

Potential reduction in urban runoff by green spaces in Beijing: A scenario analysis

Potential reduction in urban runoff by green spaces in Beijing: A scenario analysis

Evidence of the impact of urbanization on the hydrological regime of a medium-sized periurban catchment in France

Monitoring Recreational Waters: How to Integrate Environmental Determinants

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