Carbon sequestration potential of green roofs using mixed-sewage-sludge substrate in Chengdu World Modern Garden City

Luo, Hong; Liu, Xiaoling; Anderson, Bruce; Zhang, Ke; Li, Xiaoting; Huang, Bo; Li, Mei; Mo, You; Fan, Liangqian; Shen, Qiong; Chen, Fenghui; Jiang, Mingshu

doi:10.1016/j.ecolind.2014.10.016

Cited by 68 publications

(47 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Green roofs can absorb harmful gases and particulate matter, reduce rainfall runoff, reduce energy consumption, and improve air quality [4][5][6][7]. Importantly, the substrates and plants on green roofs have a great carbon sequestration ability [8] (Getter et al, 2009), which may have a positive effect on mitigating the climate change [7]. Green roofs are receiving increased attention for their ability to improve to the urban climate, relieve the heat island effect, and beautify the environment.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of Biochar and Sludge on Carbon Storage of Urban Green Roofs

Chen

Wang

et al. 2018

Forests

View full text Add to dashboard Cite

Green roofs can improve urban ecological conditions by mitigating the heat island effect and absorbing harmful gases. Soil additives can improve roof soil properties and promote the stability of the urban ecosystem. As soil additives, biochar and sludge are widely used in the ground, but their application on roofs is still scarce. This study examined the carbon storage potential of green roofs amended with sludge and biochar. The roof soil was composed of soil and varying proportions of the additives (0%, 5%, 10%, 15%, and 20%, v/v); Sedum lineare was then planted. The carbon contents of the soils and plants were measured for one year. The influence of biochar or sludge on the carbon content of the roof soil and the factors affecting the roof carbon storage potential were analyzed. The results showed that the carbon storage potential of a biochar green roof (9.3 kg C m −2) was significantly higher than that of a sludge green roof (7.9 kg C m −2). Biochar increased the carbon content of the green roof by improving the physical properties of the roof soil and promoting plant growth, whereas sludge increased the carbon content of the green roof by improving the chemical properties of the roof soil. Moreover, biochar could not only store large amounts of stable carbon, but also reduce the weight of the green roof, improve soil moisture, and provide a resourceful utilization of municipal sludge. Thus, biochar can be considered a material for promoting carbon storage on green roofs.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Waste materials, such as clay, sewage sludge, and coal ash, are widely used as roof soil amendments for green roofs [7,10]. Biochar, as a new soil improvement material, has not been widely used on roofs.…”

Section: Introductionmentioning

confidence: 99%

Effects of Biochar and Sludge on Carbon Storage of Urban Green Roofs

Chen

Wang

et al. 2018

Forests

View full text Add to dashboard Cite

show abstract

“…Os benefícios proporcionados pelas envoltórias verdes, dependendo da escala de sua implantação (em escala urbana ou da edificação) podem contribuir com melhoria da qualidade do ar (LUO et al, 2015;MARCHI et al, 2015), amortecimento térmico de superfícies construídas (YANG et al, 2015), redução de reflexo luminoso de edificações nas ruas e no interior das próprias edificações (VIRK et al, 2015), retenção de água pluvial (HARPER et al, 2015;SEBTI;BENNIS;FUAMBA, 2016;VERSINI et al, 2015), redução de metais pesados e acidez da água pluvial (SHAFIQUE; KIM, 2015;VIJAYARAGHAVAN;JOSHI, 2014), aumento da biodiversidade (LIN; PHILPOTT;JHA, 2015;MADRE et al, 2014;MULLER et al, 2014), conforto acústico (AZKORRA et al, 2015;CONNELLY;HODGSON, 2015), bem-estar psicológico (ABDUL-RAHMAN et al, 2014;SCHERER;FEDRIZZI, 2014) e economia de energia por reduzir a necessidade de uso do ar condicionado para resfriamento (COMA et al, 2014;LA ROCHE;BERARDI, 2014;WONG;BALDWIN, 2016) e aquecimento (CAMERON; TAYLOR; EMMETT, 2014;WEDDLE;MACIVOR, 2014).…”

Section: Introductionunclassified

Comportamento térmico de ambientes internos sob a influência de envoltórias verdes

Montanari

Labaki

2018

PARC Pesq. em Arquit. e Constr.

View full text Add to dashboard Cite

ResumoAs envoltórias verdes são um meio de tornar a vegetação parte integrante da edificação e de seus sistemas, tais como o de resfriamento passivo. No entanto, as dinâmicas que sustentam o bom desempenho térmico destas envoltórias dependem de diversas variáveis. O objetivo deste artigo foi identificar, através de revisão sistemática da literatura recente sobre o tema, o comportamento térmico de ambientes construídos internos sob a influência das envoltórias verdes e verificar quais são as possíveis variáveis de desempenho térmico, conforme suas características. Os trabalhos analisados mostram que a redução de temperatura do ambiente interno é significativa, sendo mais acentuada no caso de paredes verdes. O desempenho térmico das envoltórias verdes depende de variáveis como o tipo de vegetação, densidade de folhagem, composição do substrato, etc., destacando as características climáticas, apesar da maioria das pesquisas focar em resultados de outras variáveis. Foi possível, também, verificar pontos frágeis do conhecimento atual, como as lacunas a respeito do peso da umidade do substrato no resfriamento de coberturas verdes e da falta de estudos que comparem o desempenho de coberturas verdes com coberturas de telhas cerâmicas ou de fibrocimento. A análise das variáveis identificou que estas exercem entre si relações multifacetadas, o que tornou evidente que determinar hierarquias entre estas não é possível e nem prudente. A análise da coerência entre as variáveis é mais importante do que a determinação de hierarquia entre as mesmas, bem como esta ação deve preceder a definição das características de uma determinada envoltória verde a ser implantada em dado lugar.Palavras-chave: Cobertura verde. Parede verde. Fachada verde. Comportamento térmico. Variáveis de desempenho. AbstractGreen envelopes are a means for vegetation to become an integral part of the building and its systems such as the passive cooling. However, the dynamics that sustain a good thermal performance of these envelopes depend on many variables. This article aimed to identify, through the systematic review of recent literature about the topic, the thermal behavior of internal built environments under the influence of green envelopes and which are the possible performance variables according to its features. The analyzed papers show that the temperature reduction of indoor spaces is significant, being more pronounced in the case of green walls. The thermal performance of green envelopes depends on variables such as the vegetation type, leaf density, substrate's composition, etc., highlighting the climatic features despite the fact that most studies focus on results from other variables. It was also possible to verify weak spots of the current knowledge, like the gaps regarding the weight of the substrate's humidity in green roofs' cooling and the lack of investigations that compare the green roof's performance with ceramic tile or fibro cement roofs. The analysis of the variables identified that these exert multifaceted relations between themselves...

show abstract

“…Organic matter (OM) was measured using Multi N/C 3100 TOC analyzer with HT 1300 Solids module (Analytik Jena AG Multi N/C 3100, Jena, Germany) [21]. Soil pH was measured in a 2.5:1 soil-water suspension using a digital pH meter (Shanghai Rex Instrument Factory PHB-4, Shanghai, China) [22].…”

Section: Determination Of Soil Nutrientsmentioning

confidence: 99%