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https://www.readbyqxmd.com/read/29116532/assessment-of-addition-of-biochar-to-filtering-mixtures-for-potential-water-pollutant-removal
#1
Lea Piscitelli, Pierre-Adrien Rivier, Donato Mondelli, Teodoro Miano, Erik J Joner
Green roofs are used increasingly to alleviate peaks of water discharge into the sewage systems in urban areas. Surface runoff from roofs contain pollutants from dry and wet deposition, and green roofs offer a possibility to reduce the amounts of pollutants in the water discharged from roofs by degradation and filtering. These pollutants would otherwise enter wastewater treatments plants and ultimately end up in sewage sludge that is spread on agricultural soils. The most common substrates used in green roofs have limited capacity for filtration and sorption...
November 7, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29078119/habitat-template-approach-for-green-roofs-using-a-native-rocky-sea-coast-plant-community-in-japan
#2
Ayako Nagase, Yurika Tashiro-Ishii
The present study examined whether it is possible to simulate a local herbaceous coastal plant community on a roof, by studying the natural habitats of rocky sea coast plants and their propagation and performance on a green roof. After studying the natural habitat of coastal areas in Izu peninsula, a germination and cutting transplant study was carried out using herbaceous plants from the Jogasaki sea coast. Many plant species did not germinate at all and the use of cuttings was a better method than direct seeding...
October 24, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28876249/growing-substrates-for-aromatic-plant-species-in-green-roofs-and-water-runoff-quality-pilot-experiments-in-a-mediterranean-climate
#3
Cristina M Monteiro, Cristina S C Calheiros, Paulo Palha, Paula M L Castro
Green roof technology has evolved in recent years as a potential solution to promote vegetation in urban areas. Green roof studies for Mediterranean climates, where extended drought periods in summer contrast with cold and rainy periods in winter, are still scarce. The present research study assesses the use of substrates with different compositions for the growth of six aromatic plant species - Lavandula dentata, Pelargonium odoratissimum, Helichrysum italicum, Satureja montana, Thymus caespititius and T. pseudolanuginosus, during a 2-year period, and the monitoring of water runoff quality...
September 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28847103/assessing-summertime-urban-warming-and-the-cooling-efficacy-of-adaptation-strategy-in-the-chengdu-chongqing-metropolitan-region-of-china
#4
Xiaojuan Liu, Guangjin Tian, Jinming Feng, Jun Wang, Lingqiang Kong
Western China has experienced rapid urbanization since the Chinese reform process began in the late 1970s. It is essential to study the spatiotemporal patterns of warming induced by historical and future urban expansion and to evaluate adaptation strategies for the Chengdu-Chongqing metropolitan region (CCMR) in western China. The observed urban heat island intensity was ~1.5K in July 2009-2011. We employed the weather research and forecasting (WRF) model using real and projected urban land-use data to simulate near-surface air temperatures for a crop, urban in 2010 and urban in 2030 scenarios in summer over the CCMR...
January 1, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/28772892/effects-of-wastes-from-the-brewing-industry-in-lightweight-aggregates-manufactured-with-clay-for-green-roofs
#5
Romina D Farías, Carmen Martínez García, Teresa Cotes Palomino, Myriam Martínez Arellano
This study investigates the effects of sieved wastes generated from the brewing industry on lightweight aggregates manufactured with clay. Sludge from a wastewater treatment plant, bagasse and diatomaceous earth were used to obtain the samples. These wastes are usually dumped in landfills, but the current increase in restrictions on dumping and interest in improving the environment make our proposal for gaining value from these wastes a significant contribution. Laboratory tests show that the new aggregate has low bulk density and increased water absorption and porosity...
May 15, 2017: Materials
https://www.readbyqxmd.com/read/28772140/enhancing-future-resilience-in-urban-drainage-system-green-versus-grey-infrastructure
#6
Xin Dong, Hao Guo, Siyu Zeng
In recent years, the concept transition from fail-safe to safe-to-fail makes the application of resilience analysis popular in urban drainage systems (UDSs) with various implications and quantifications. However, most existing definitions of UDSs resilience are confined to the severity of flooding, while uncertainties from climate change and urbanization are not considered. In this research, we take into account the functional variety, topological complexity, and disturbance randomness of UDSs and define a new formula of resilience based on three parts of system severity, i...
November 1, 2017: Water Research
https://www.readbyqxmd.com/read/28709096/extensive-green-roof-co2-exchange-and-its-seasonal-variation-quantified-by-eddy-covariance-measurements
#7
Jannik Heusinger, Stephan Weber
The CO2 surface-atmosphere exchange of an unirrigated, extensive green roof in Berlin, Germany was measured by means of the eddy covariance method over a full annual cycle. The present analysis focusses on the cumulative green roof net ecosystem exchange of CO2 (NEE), on its seasonal variation and on green roof physiological characteristics by applying a canopy (A-gs) model. The green roof was a carbon sink with an annual cumulative NEE of -313gCO2m(-2)year(-)(1), equivalent to -85gCm(-2)year(-)(1). Three established CO2 flux gap-filling methods were applied to estimate NEE and to study the performance during different meteorological situations...
December 31, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28659523/hydrological-performance-of-dual-substrate-layer-green-roofs-using-porous-inert-substrates-with-high-sorption-capacities
#8
Xiaoou Wang, Yimei Tian, Xinhua Zhao, Chenrui Peng
Given that the common medium in existing green roofs is a single layer composed of organic and inorganic substrates, seven pilot-scale dual-substrate-layer extensive green roofs (G1-G7), which include nutrition and adsorption substrate layers, were constructed in this study. The effectiveness of porous inert substrates (activated charcoal, zeolite, pumice, lava, vermiculite and expanded perlite) used as the adsorption substrate for stormwater retention was investigated. A single-substrate-layer green roof (G8) was built for comparison with G1-G7...
June 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28633111/drought-avoiding-plants-with-low-water-use-can-achieve-high-rainfall-retention-without-jeopardising-survival-on-green-roofs
#9
Christopher Szota, Claire Farrell, Nicholas S G Williams, Stefan K Arndt, Tim D Fletcher
Green roofs are increasingly being used among the suite of tools designed to reduce the volume of surface water runoff generated by cities. Plants provide the primary mechanism for restoring the rainfall retention capacity of green roofs, but selecting plants with high water use is likely to increase drought stress. Using empirically-derived plant physiological parameters, we used a water balance model to assess the trade-off between rainfall retention and plant drought stress under a 30-year climate scenario...
June 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28618315/simulation-of-green-roof-runoff-under-different-substrate-depths-and-vegetation-covers-by-coupling-a-simple-conceptual-and-a-physically-based-hydrological-model
#10
Konstantinos X Soulis, John D Valiantzas, Nikolaos Ntoulas, George Kargas, Panayiotis A Nektarios
In spite of the well-known green roof benefits, their widespread adoption in the management practices of urban drainage systems requires the use of adequate analytical and modelling tools. In the current study, green roof runoff modeling was accomplished by developing, testing, and jointly using a simple conceptual model and a physically based numerical simulation model utilizing HYDRUS-1D software. The use of such an approach combines the advantages of the conceptual model, namely simplicity, low computational requirements, and ability to be easily integrated in decision support tools with the capacity of the physically based simulation model to be easily transferred in conditions and locations other than those used for calibrating and validating it...
June 12, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28558261/regulating-urban-surface-runoff-through-nature-based-solutions-an-assessment-at-the-micro-scale
#11
Teresa Zölch, Lisa Henze, Patrick Keilholz, Stephan Pauleit
Urban development leads to changes of surface cover that disrupt the hydrological cycle in cities. In particular, impermeable surfaces and the removal of vegetation reduce the ability to intercept, store and infiltrate rainwater. Consequently, the volume of stormwater runoff and the risk of local flooding rises. This is further amplified by the anticipated effects of climate change leading to an increased frequency and intensity of heavy rain events. Hence, urban adaptation strategies are required to mitigate those impacts...
August 2017: Environmental Research
https://www.readbyqxmd.com/read/28520817/heat-in-the-southeastern-united-states-characteristics-trends-and-potential-health-impact
#12
Jeremy E Diem, Christine E Stauber, Richard Rothenberg
High summer temperatures in extratropical areas have an impact on the public's health, mainly through heat stress, high air pollution concentrations, and the transmission of tropical diseases. The purpose of this study is to examine the current characteristics of heat events and future projections of summer apparent temperature (AT)-and associated health concerns-throughout the southeastern United States. Synoptic climatology was used to assess the atmospheric characteristics of extreme heat days (EHDs) from 1979-2015...
2017: PloS One
https://www.readbyqxmd.com/read/28504300/effect-of-protection-against-hot-climate-on-growth-performance-physiological-response-and-endocrine-profile-of-growing-lambs-under-semi-arid-tropical-environment
#13
Kalyan De, Davendra Kumar, Anoop Kumar Singh, Kamal Kumar, Artabandhu Sahoo, Syed Mohammed Khursheed Naqvi
In the hot semi-arid tropical region, extreme summer is a major constraint in sheep production. The growth performance of growing lambs is impaired during the summer. Therefore, the present study was conducted to assess the effect of protection against hot climate on growth performance, physiological response, and endocrine profile of growing lambs under semi-arid tropical environment. All the data in the experiment were presented as mean ± SE. Thirty Malpura lambs with the age of 122.7 ± 6.05 days and body weight of 19...
August 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28480127/towards-providing-solutions-to-the-air-quality-crisis-in-the-mexico-city-metropolitan-area-carbon-sequestration-by-succulent-species-in-green-roofs
#14
Margarita Collazo-Ortega, Ulises Rosas, Jerónimo Reyes-Santiago
INTRODUCTION: In the first months of 2016, the Mexico City Metropolitan Area experienced the worst air pollution crisis in the last decade, prompting drastic short-term solutions by the Mexico City Government and neighboring States. In order to help further the search for long-term sustainable solutions, we felt obliged to immediately release the results of our research regarding the monitoring of carbon sequestration by green roofs. Large-scale naturation, such as the implementation of green roofs, provides a way to partially mitigate the increased carbon dioxide output in urban areas...
March 31, 2017: PLoS Currents
https://www.readbyqxmd.com/read/28412623/the-urban-heat-island-effect-its-causes-and-mitigation-with-reference-to-the-thermal-properties-of-asphalt-concrete
#15
REVIEW
Abbas Mohajerani, Jason Bakaric, Tristan Jeffrey-Bailey
The Urban Heat Island (UHI) is a phenomenon that affects many millions of people worldwide. The higher temperatures experienced in urban areas compared to the surrounding countryside has enormous consequences for the health and wellbeing of people living in cities. The increased use of manmade materials and increased anthropogenic heat production are the main causes of the UHI. This has led to the understanding that increased urbanisation is the primary cause of the urban heat island. The UHI effect also leads to increased energy needs that further contribute to the heating of our urban landscape, and the associated environmental and public health consequences...
July 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28405299/multifunctionality-is-affected-by-interactions-between-green-roof-plant-species-substrate-depth-and-substrate-type
#16
Yann Dusza, Sébastien Barot, Yvan Kraepiel, Jean-Christophe Lata, Luc Abbadie, Xavier Raynaud
Green roofs provide ecosystem services through evapotranspiration and nutrient cycling that depend, among others, on plant species, substrate type, and substrate depth. However, no study has assessed thoroughly how interactions between these factors alter ecosystem functions and multifunctionality of green roofs. We simulated some green roof conditions in a pot experiment. We planted 20 plant species from 10 genera and five families (Asteraceae, Caryophyllaceae, Crassulaceae, Fabaceae, and Poaceae) on two substrate types (natural vs...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28333081/hyperspectral-monitoring-of-green-roof-vegetation-health-state-in-sub-mediterranean-climate-preliminary-results
#17
Patrizia Piro, Michele Porti, Simone Veltri, Emanuela Lupo, Monica Moroni
In urban and industrial environments, the constant increase of impermeable surfaces has produced drastic changes in the natural hydrological cycle. Decreasing green areas not only produce negative effects from a hydrological-hydraulic perspective, but also from an energy point of view, modifying the urban microclimate and generating, as shown in the literature, heat islands in our cities. In this context, green infrastructures may represent an environmental compensation action that can be used to re-equilibrate the hydrological and energy balance and reduce the impact of pollutant load on receiving water bodies...
March 23, 2017: Sensors
https://www.readbyqxmd.com/read/28318693/the-influence-of-dual-substrate-layer-extensive-green-roofs-on-rainwater-runoff-quantity-and-quality
#18
Xiaoou Wang, Yimei Tian, Xinhua Zhao
This study investigates the ability of dual-substrate-layer extensive green roofs to retain rainwater and reduce pollutant leaching. The substrates in dual-substrate-layer green roofs consist of an upper organic nutrition layer for plant growth and a lower inorganic adsorption layer for water retention and pollutant reduction. One traditional single-substrate-layer extensive green roof was built for comparison with dual-substrate-layer green roofs. During the experimental period, dual-substrate-layer green roofs supported better natural vegetation growth, with coverage exceeding 90%, while the coverage in single-substrate-layer green roof was over 80%...
March 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28304134/a-modified-eco-efficiency-framework-and-methodology-for-advancing-the-state-of-practice-of-sustainability-analysis-as-applied-to-green-infrastructure
#19
Santosh R Ghimire, John M Johnston
We propose a modified eco-efficiency (EE) framework and novel sustainability analysis methodology for green infrastructure (GI) practices used in water resource management. Green infrastructure practices such as rainwater harvesting (RWH), rain gardens, porous pavements, and green roofs are emerging as viable strategies for climate change adaptation. The modified framework includes 4 economic, 11 environmental, and 3 social indicators. Using 6 indicators from the framework, at least 1 from each dimension of sustainability, we demonstrate the methodology to analyze RWH designs...
September 2017: Integrated Environmental Assessment and Management
https://www.readbyqxmd.com/read/28274257/prevalence-and-determinants-of-malaria-among-children-in-zamb%C3%A3-zia-province-mozambique
#20
James G Carlucci, Meridith Blevins Peratikos, Charlotte B Cherry, Melanie L Lopez, Ann F Green, Lazaro González-Calvo, Troy D Moon
BACKGROUND: Malaria is the leading cause of death among children in Mozambique. Prevalence and factors associated with malaria are not well studied among children in rural Zambézia Province. Whether prevalence of malaria varies across diverse districts within the province is unknown. METHODS: A cross-sectional survey of female heads of household was conducted during April and May 2014, a period of peak malaria transmission. Data were collected on up to two randomly selected children aged 6-59 months per household...
March 9, 2017: Malaria Journal
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