Nutrient leaching in extensive green roof substrate layers with different configurations

Xu, Chen; Liu, Zaohong; Cai, Guanjun; Zhan, Jie

doi:10.1007/s11356-021-17969-3

Cited by 7 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Consistent patterns were also reported in the qualitative summary, with Liao et al also revealing that biochar reduced substrate erosion loss (Table ). − Biochar showed no mean effect on substrate saturated hydraulic conductivity (ln RR = −0.285 ± 0.505), total porosity (ln RR = −0.079 ± 0.104), or air-filled porosity (ln RR = −0.015 ± 0.067).…”

Section: Resultsmentioning

confidence: 96%

Biochar Benefits Green Infrastructure: Global Meta-Analysis and Synthesis

Liao,

Halim,

Kayes

et al. 2023

Environ. Sci. Technol.

View full text Add to dashboard Cite

Urbanization has degraded ecosystem services on a global scale, and cities are vulnerable to long-term stresses and risks exacerbated by climate change. Green infrastructure (GI) has been increasingly implemented in cities to improve ecosystem functions and enhance city resilience, yet GI degradation or failure is common. Biochar has been recently suggested as an ideal substrate additive for a range of GI types due to its favorable properties; however, the generality of biochar benefits the GI ecosystem function, and the underlying mechanisms remain unclear.Here, we present a global meta-analysis and synthesis and demonstrate that biochar additions pervasively benefit a wide range of ecosystem functions on GI. Biochar applications were found to improve substrate water retention capacity by 23% and enhance substrate nutrients by 12−31%, contributing to a 33% increase in plant total biomass. Improved substrate physicochemical properties and plant growth together reduce discharge water volume and improve discharge water quality from GI. In addition, biochar increases microbial biomass on GI by ∼150% due to the presence of biochar pores and enhanced microbial growth conditions, while also reducing CO 2 and N 2 O emissions. Overall results suggest that biochar has great potential to enhance GI ecosystem functions as well as urban sustainability and resilience.

show abstract

Section: Resultsmentioning

confidence: 96%

Biochar Benefits Green Infrastructure: Global Meta-Analysis and Synthesis

Liao,

Halim,

Kayes

et al. 2023

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…The substrate mixture and the single substrate materials have good rainwater retention and pollution interception capacities, which have been proved in our previous studies. 21,22 Peat soil and vermiculite are the substrate materials commonly used in the EGR substrate layer. The substrate mixture is representative of the object for modification.…”

Section: Experimental Columnmentioning

confidence: 99%

Comparison of rainwater management performance of modified extensive green roof substrate layer with different additives in rainstorm events

Fei

Miao

et al. 2023

Environ. Sci.: Water Res. Technol.

View full text Add to dashboard Cite

show abstract

“…The leachate from GRs might contain different amounts of pollutants, and its combination with stormwater runoff turns it into a new non-point pollution source in urban areas. Substrate and drainage layer materials significantly impact the GR runoff quality (Xu et al 2022). Whether GRs act as a sink for substances through deposition or as non-point sources of pollution depends on the substrate and drainage materials (Berndtsson et al 2009;Alsup et al 2011;Karczmarczyk et al 2014;Wang et al 2017;Baryła et al 2018;Jennett and Zheng 2018;Qianqian et al 2019).…”

Section: Materials Impacts On Runoff Qualitymentioning

confidence: 99%

Sustainable green roofs: a comprehensive review of influential factors

Shahmohammad

Hosseinzadeh

Dvorak

et al. 2022

Environ Sci Pollut Res

View full text Add to dashboard Cite

Green roofs have gained much attention as a modern roofing surface due to their potential to deliver many environmental and social benefits. Studies have indicated that different GR designs deliver different ecosystem services, and there are important factors that affect GR performance. This article reviewed significant factors that influence GR performance and sustainability. Substrate and drainage layer material choice significantly affects stormwater retention potential, leachate quality, plant survival, and determines GR environmental footprints. Subsequently, type of plants, their form, and kinds used on GRs impact GR ecosystem function. Leaf area is the most studied trait due to its influence on the cooling potential and energy performance. In order to achieve a sustainable GR, it is essential to select the type of plants that have a high survival rate. Perennial herbs, particularly forbs and grass as dominant groups, are heat and drought tolerant, which make them suitable in GR experiment. Furthermore, selecting a suitable irrigation system is as important as two other factors for having a sustainable GR. Irrigation is essential for plant survival, and due to the current pressure on valuable water sources, it is important to select a sustainable irrigation system. This review presents three sustainable irrigation methods: (i) employing alternative water sources such as rainwater, greywater, and atmospheric water; (ii) smart irrigation and monitoring; and (iii) using adaptive materials and additives that improve GR water use. This review sheds new insights on the design of high-performance, sustainable GRs and provides guidance for the legislation of sustainable GR.

show abstract

Nutrient leaching in extensive green roof substrate layers with different configurations

Cited by 7 publications

References 36 publications

Biochar Benefits Green Infrastructure: Global Meta-Analysis and Synthesis

Biochar Benefits Green Infrastructure: Global Meta-Analysis and Synthesis

Comparison of rainwater management performance of modified extensive green roof substrate layer with different additives in rainstorm events

Sustainable green roofs: a comprehensive review of influential factors

Contact Info

Product

Resources

About