Edge effect of streets in old residential areas in Chengdu, China

Zhong, Lingyan; Tan, Ming

doi:10.1108/ohi-04-2020-0003

Cited by 6 publications

(6 citation statements)

References 31 publications

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“…Among them, the range of δ 18 O P values (6.0–20.9‰) was the largest in the Huangbai River . The δ 18 O P values were 12.0–20.0‰ (mean of 15.8 ± 3.0‰) in the Mianyuan River, which were higher than those in the Tuojiang River. This was due to the higher δ 18 O P values of the P source in the Huangbai River and Mianyuan River.…”

Section: Resultsmentioning

confidence: 90%

“…The SRP was mainly attributed to fertilizer (49.2 ± 23.2%) and sewage (50.8 ± 23.2%) in the residential/agricultural area . The SRP was mainly attributed to IS, farmland soil, and DS in the upper, middle, and lower reaches of the Mianyuan River, respectively. Our results were consistent with those in the Mianyuan River basin.…”

Section: Resultsmentioning

confidence: 99%

“…This was mainly because in the middle and upper reaches, the flow speed of water was faster, the biomass was lower, and the oxygen isotope exchange between SRP and water was slower. The river surface is wide in the lower reaches; there are many river intersections, and the microbial effect is strong …”

Section: Resultsmentioning

confidence: 99%

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Using a Multi-isotope Approach and Isotope Mixing Models to Trace and Quantify Phosphorus Sources in the Tuojiang River, Southwest China

Liu

Zhang

et al. 2023

Environ. Sci. Technol.

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Identifying phosphorus (P) sources is critical for solving eutrophication and controlling P in aquatic environments. Phosphate oxygen isotopes (δ 18 O p ) have been used to trace P sources. However, the application of this method has been greatly restricted due to δ 18 O P values from the potential source having wide and overlapping ranges. In this research, P sources were traced by combining δ 18 O p with multiple stable isotopes of nitrogen (δ 15 N), hydrogen (δD), and dissolved inorganic carbon (δ 13 C). Then, a Bayesian-based Stable Isotope Analysis in R (SIAR) model and IsoSource model were used to estimate the proportional contributions of the potential sources in the Tuojiang River. δ 18 O p was not in equilibrium with ambient water, and statistically significant differences in the δ 18 O p values were found between the potential sources, indicating that δ 18 O p can be used to trace the P sources. δ 15 N, δD, and δ 13 C could assist δ 18 O p in identifying the main sources of P. The SIAR and IsoSource models suggested that industrial and domestic sewage was the largest contributor, followed by phosphate rock and phosphogypsum and agricultural sewage. The uncertainty of the calculation results of the SIAR model was lower than that of the IsoSource model. These findings provide new insights into tracing P sources using multiple stable isotopes in watersheds.

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Section: Resultsmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 99%

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Using a Multi-isotope Approach and Isotope Mixing Models to Trace and Quantify Phosphorus Sources in the Tuojiang River, Southwest China

Liu

Zhang

et al. 2023

Environ. Sci. Technol.

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“…Users are not attracted by the physical factors that much as they are not comfortable with the current pedestrian conditions. Zhong and Tan (2020), Gehl (2010) and Tibbalds (1992) also supported that the importance of attractive public places in urban areas depended on accumulating a feeling of comfort or well-being of the users.Users' frequency of using the areas…”

Section: Resultsmentioning

confidence: 95%

User-friendly street- a study on users' perception ranking on physical attributes of pedestrian environment of Dhaka city

Israt¹,

Hassan

2022

OHI

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PurposeThe purpose of this research is to examine the current physical qualities and activities of pedestrian environment from the perspective of the users' needs and perceptions for making user-friendly streets in Dhaka city.Design/methodology/approachCase study research approach was adapted with a mixed method approach in data collection and analysis to gather information about the interrelationship concerning the variables. The questionnaire survey and direct observation was conducted with the users of the streets to get the actual scenes of the study areas. For the findings, multiple sources of evidence were triangulated and used to analyze which were derived from the convergence of the data.FindingsThe findings of this study show that the needs for the factors which make people to use the street are similar with the previous theories derived by different scholars. The results establish that making of user-friendly street from the users' perspective has a significant relationship with the attributes of public spaces in the context of Dhaka. Correlation among the attributes of public spaces concerning sociability, uses and activities, access and linkage and safety, comfort and image showed the issues affecting the pedestrian environment toward a crucial condition in Dhaka city.Research limitations/implicationsTime allocation, inadequacy of secondary data sources and earlier research on this topic in the context of Dhaka city, were the primary limitations to let an in-depth and full exploration of the research.Originality/valueThe study provided a detailed representation of Dhaka's users' perception of the pedestrian environment. This study suggests a new perspective of bettering pedestrian experience in the city center.

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“…Streets around the world embrace different uses and have different forms, this helps in giving the city identity and in creating sense of place (Lynch, 1960;Cullen, 1971). Streets over time become rich, diverse and spatially unique due to the daily life that exists within it (Zhong and Tan, 2020). One of the most common scenes in cities is the street market, where vendors either formally or informally sell all types of goods (Crawford, 1999).…”

Section: Introductionmentioning

confidence: 99%

Perception of street vendors and their effect on urban settings in Portobello Road, London

Torky

Heath

2021

ARCH

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PurposeStreet vendors create a vital urban street and a significant and important part of our urban areas are streets, they cater to our leisure, social and functional needs. There are many debates concerning street vendors; on one hand, there are those who argue against them because they believe they create problems and should be abolished, and on the other hand, there are arguments that defend them and believe that they are vital to the street life.Design/methodology/approachThis paper aims to identify people's perception and acceptance of street vending and its effect on experience of the street. Observations and user interviews were undertaken in Portobello and Golborne Road to explore the influence of street vendors on urban settings and analyze their vending patterns and their relationship with urban users.FindingsFindings state that street vending takes up a large part in the liveliness and attractiveness of the market in London. People tend to accept street vendors because they have many benefits for vitality and liveliness of the urban environment; however, they sometimes cause problems with ease of mobility in the area for pedestrians and the public in general.Originality/valueStreet vendors create a vital urban street and provide affordable goods. There are many debates concerning street vendors; on the one hand, there are those who argue against them because they believe they create problems and should be abolished, and on the other hand, there are arguments that defend them and believe that they are vital to the street life. It was important to study street vending in detail in order to explore this unique and important activity that takes place in almost all cities of the world. The case study chosen was quite unique and street vending taking place in Portobello Road and London in general is mostly formal street vending, which wasn't studied in detail previously.

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Edge effect of streets in old residential areas in Chengdu, China

Cited by 6 publications

References 31 publications

Using a Multi-isotope Approach and Isotope Mixing Models to Trace and Quantify Phosphorus Sources in the Tuojiang River, Southwest China

Using a Multi-isotope Approach and Isotope Mixing Models to Trace and Quantify Phosphorus Sources in the Tuojiang River, Southwest China

User-friendly street- a study on users' perception ranking on physical attributes of pedestrian environment of Dhaka city

Perception of street vendors and their effect on urban settings in Portobello Road, London

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