Urban Mega Projects and Land Conversion in Peri-urban Areas—Impact on Vegetable Production Due to Outer Ring Road in Hyderabad, India

2014 ◽  
Vol 5 (2) ◽  
pp. 319-335 ◽  
Author(s):  
C. Ramachandraiah
Keyword(s):  
Urban Areas ◽  
Outer Ring ◽  
Vegetable Production ◽  
Land Conversion ◽  
Ring Road

scholarly journals The Impact of the Ring Roads on the Location Pattern of Shops in Town and City Centres. A Space Syntax Approach

2021 ◽  
Vol 13 (7) ◽  
pp. 3927
Author(s):  
Akkelies van Nes
Keyword(s):  
Urban Areas ◽  
Space Syntax ◽  
Optimal Location ◽  
Spatial Integration ◽  
Street Network ◽  
Location Pattern ◽  
Ring Road ◽  
Road Projects ◽  
The Impact ◽  
City Centres

This contribution demonstrates how inner ring roads change the location pattern of shops in urban areas with the application of the space syntax method. A market rational behaviour persists, in that shop owners always search for an optimal location to reach as many customers as possible. If the accessibility to this optimal location is affected by changes in a city’s road and street structure, it will affect the location pattern of shops. Initially, case studies of inner ring road projects in Birmingham, Coventry, Wolverhampton, Bristol, Tampere, and Mannheim show how their realisation affect the spatial structure of the street network of these cities and the location pattern of shops. The results of the spatial integration analyses of the street and road network are discussed with reference to changes in land-use before and after the implementation of ring roads, and current space syntax theories. As the results show, how an inner ring road is connected to and the type of the street network it is imposed upon dictates the resulting location pattern of shops. Shops locate and relocate themselves along the most spatially-integrated streets. Evidence on how new road projects influence the location pattern of shops in urban centres are useful for planning sustainable city centres.

scholarly journals Spatio-Temporal Change Characteristics of Spatial-Interaction Networks: Case Study within the Sixth Ring Road of Beijing, China

2019 ◽  
Vol 8 (6) ◽  
pp. 273 ◽  
Author(s):  
Jing Yang ◽  
Disheng Yi ◽  
Bowen Qiao ◽  
Jing Zhang
Keyword(s):  
Urban Areas ◽  
Traffic Management ◽  
Spatial Interaction ◽  
Small World ◽  
Core Layer ◽  
Vital Role ◽  
Interaction Networks ◽  
Ring Road ◽  
The Core ◽  
Spatio Temporal

Spatial-interaction networks are an important factor in geography that could help in the exploration of both human spatial-temporal behavior and the structure of urban areas. This paper analyzes changes in the spatio-temporal characteristics of the Spatial-Interaction Networks of Beijing (SINB) in three consecutive steps. To begin with, we constructed 24 sequential snapshots of spatial population interactions on the basis of points of interest (POIs) collected from Dianping.com and various taxi GPS data in Beijing. Then, we used Jensen–Shannon distance and hierarchical clustering to integrate the 24 sequential network snapshots into four clusters. Finally, we improved the weighted k-core decomposition method by combining the complex network method and weighted distance in a geographic space. The results showed: (1) There are three layers in the SINB: a core layer, a bridge layer, and a periphery layer. The number of places greatly varies, and the SINB show an obvious hierarchical structure at different periods. The core layer contains fewer places that are between the Second and Fifth Ring Road in Beijing. Moreover, spatial distribution of places in the bridge layer is always in the same location as that of the core layer, and the quantity in the bridge layer is always superior to that in the core layer. The distributions of places in the periphery layer, however, are much greater and wider than the other two layers. (2) The SINB connected compactly over time, bearing much resemblance to a small-world network. (3) Two patterns of connection, each with different connecting ratios between layers, appear on weekdays and weekends, respectively. Our research plays a vital role in understanding urban spatial heterogeneity, and helps to support decisions in urban planning and traffic management.

scholarly journals DESIGN AND DEVELOPMENT OF SMART VERTICAL GARDEN SYSTEM FOR URBAN AGRICULTURE INITIATIVE IN MALAYSIA

2019 ◽  
Vol 82 (1) ◽  
Author(s):  
Munirah Hayati Hamidon ◽  
Samsuzana Abd Aziz ◽  
Tofael Ahamed ◽  
Muhammad Razif Mahadi
Keyword(s):  
Urban Agriculture ◽  
Urban Areas ◽  
Light Exposure ◽  
Maximum Level ◽  
Vegetable Production ◽  
Hydroponic System ◽  
Growth Performances ◽  
Significant Difference ◽  
Number Of Leaves ◽  
Two Phases

Vertical garden system has the potential to increase vegetable production in the urban areas in Malaysia. This research designed and developed a compact and smart vertical garden system for the urban agriculture. It also analysed the growth performances of lettuce in the smart vertical garden system which involved two phases; the development of vertical garden system and the monitoring system for nutrient solution. The growth performances of different stacks of lettuce (Lactuca sativa) in the vertical garden system were observed and compared against the commercialised conventional hydroponic system. The growth performances of lettuce in the vertical garden system showed that the most bottom stack (stack 5) of lettuce achieved the maximum level of lettuce height, and had the highest number of leaves and leaves width. Nevertheless, from the overall ANOVA results, at different levels of the stacks of lettuce, only lettuce height was observed as having a significant difference (P < 0.0001) while no significant difference was found in the number of leaves (P = 0.0002) and leaves width (P = 0.0046). The growth development varied due to different amounts of water and light exposure. On the other hand, no significant difference was found when comparing between the vertical garden system and the commercialised conventional hydroponic system (lettuce height, P = 0.4997; number of leaves, P = 0.5325; and leaves width, P = 0.5231). In short, the smart vertical garden system can give the same performance as the commercial conventional hydroponic system.

scholarly journals Irrigated urban vegetable production in Ghana: microbiological contamination in farms and markets and associated consumer risk groups

2007 ◽  
Vol 5 (3) ◽  
pp. 455-466 ◽  
Author(s):  
P. Amoah ◽  
P. Drechsel ◽  
M. Henseler ◽  
R. C. Abaidoo
Keyword(s):  
Low Income ◽  
Urban Areas ◽  
Fast Food ◽  
Risk Group ◽  
Risk Groups ◽  
Normal Diet ◽  
Vegetable Production ◽  
Sub Saharan ◽  
Contamination Levels ◽  
Questionnaire Surveys

Ghana is a typical low-income sub-Saharan African country facing significant sanitation challenges. In Ghana, fresh salads are not part of the normal diet, but have become a common supplement to urban fast food served in streets, canteens and restaurants. In Accra, about 200 000 people consume from such supplements every day. The figure also describes the size of the risk group from contamination, which comprises all income classes including the poor and children. The purpose of this study was to investigate widespread water pollution in urban and peri-urban areas, where 95% of the lettuce consumed in the city is produced. Over 12 months (April 2004–June 2005), lettuce samples from the same production sites in two cities were followed and analyzed along the “farm to fork” pathway for total and faecal coliform (FC) and helminth egg numbers. Questionnaire surveys were conducted among producers, sellers and consumers to quantify lettuce flows to the final risk group. The study identified the farm as the main point of lettuce contamination. Besides the irrigation water, contamination was also attributed to manure application and already contaminated soil. Despite poor sanitary conditions in markets, post-harvest handling and marketing did not further increase the farm-gate contamination levels. To reduce the health risk associated with the consumption of contaminated lettuce; safer farming and irrigation practices are required while the remaining risk could best be addressed where lettuce is prepared for consumption.

scholarly journals Heavy Metal Contamination in Soil: Sources, Accumulation in Vegetables and Remedial Measures: A Review

Agropedology ◽  
2019 ◽  
Vol 30 (2) ◽  
Author(s):  
Sandeep Kumar ◽  
◽  
Lal Chand Malav ◽  
Shiv Prasad ◽  
Sunita Yadav ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Toxic Metals ◽  
Urban Areas ◽  
Metal Contamination ◽  
Industrial Development ◽  
Heavy Metal Contamination ◽  
Biological Activities ◽  
Vegetable Production ◽  
Human Beings ◽  
Negative Effects

Presently, rapid industrialization and mechanization create a lot of heavy metal pollution around the globe. Both anthropogenic and natural sources are responsible for the discharge of heavy metal in the environment. Anyhow, these toxic metals reach into soil, water bodies, plants and finally to human beings through the food chain. These toxic metals create several problems in plants and living beings after intake from the soil and get accumulated in their body. Heavy metals also exhibit toxic effects on soil biological activities by affecting key microbial processes and also hamper the activities of soil microbes. Recently, due to industrial development in urban areas, heavy metal contamination has become a serious threat to peri-urban agriculture prevalent for vegetable production. There has long been a need for decontamination of these agricultural resources and prevention from the further contamination to avert the negative effects on living beings. In this article, an attempt has been made to provide an extensive understanding about different sources of heavy metal, such as zinc (Zn), copper (Cu), lead (Pb) and cadmium (Cd) etc., in agro-ecosystem and their possible risks to soil and plants. An effort has been also made to present in brief information on remediation techniques specially phytoremediation through this review.

Assessing P fertiliser use in vegetable production: agronomic and environmental implications

Soil Research ◽  
2010 ◽  
Vol 48 (8) ◽  
pp. 674 ◽  
Author(s):  
K. Y. Chan ◽  
T. Wells ◽  
D. Fahey ◽  
S. M. Eldridge ◽  
C. G. Dorahy
Keyword(s):  
Water Quality ◽  
Urban Areas ◽  
Management Practices ◽  
Poultry Litter ◽  
Vegetable Production ◽  
Environmental Implications ◽  
Runoff Water ◽  
Soil P ◽  
Farming Practice

Vegetable production is often located in the peri-urban areas close to large cities. In Sydney, Australia, excessive levels of phosphorus (P) have been reported in the soils, and vegetable farms have long been regarded as a potential source of the P that enters Sydney’s waterways. We report vegetable production under varying soil P conditions and the consequent changes in soil P, as well as water quality of runoff and leachate after growing 5 crops in a field trial where inputs in the form of garden organic compost were compared to current farmers’ practice. No difference in vegetable yield was observed between 100 and 400 mg/kg of soil Colwell P (0–0.10 m); therefore, our results indicate that the excessive soil P levels in the vegetable farms around Sydney are not important for optimal vegetable production. Results from runoff and leachate studies clearly demonstrate that high concentrations of P in soils used for vegetable production under the current farming practice around Sydney have increased the potential to export P and to negatively affect water quality of receiving environments. The significant increases in soluble P concentrations found in the soil and runoff water from the current farming practice can be attributed to the use of poultry litter. In contrast, using compost in place of poultry litter resulted in significantly reduced soil P accumulation and P concentration in runoff and leachate. Training and education programs for farmers and their advisors are recommended to encourage more sustainable fertiliser management practices and reduce the accumulation of P in the environment.

Effect of householder characteristics, production, sales and safety awareness on farmers’ choice of vegetable marketing channels in Beijing, China

2017 ◽  
Vol 119 (6) ◽  
pp. 1216-1231 ◽  
Author(s):  
Biao Zhang ◽  
Zetian Fu ◽  
Jieqiong Wang ◽  
Xiaolin Tang ◽  
Yousen Zhao ◽  
...  
Keyword(s):  
Urban Areas ◽  
Positive Impact ◽  
Household Head ◽  
Multinomial Logit Model ◽  
Marketing Channels ◽  
Vegetable Production ◽  
Farmers Market ◽  
Content Type ◽  
Negative Effect ◽  
Farmer Decision Making

Purpose Farmers’ selection of vegetable marketing channels directly affects their income and is important to stable vegetable supply and food control. The purpose of this paper is to investigate the farmers’ selection behavior of vegetable marketing channels, and to determine the key factors which affected farmer’ decision making. Design/methodology/approach A total of 191 valid questionnaires were collected from 50 villages in seven main vegetable production districts in Beijing urban areas from September to December 2015, yielding a response rate of 86.8 percent. The multinomial logit model was used for analysis in this study. Findings The results revealed that the farmers mainly selected farmers’ market, cooperative, and wholesaler to sell their vegetables, which comprised 96.57 percent of total vegetable sales. Estimation results showed that cooperative, vegetable acreage, price satisfaction, and slow sales were most important factors which influence positively the probability of opting to sell vegetables at a cooperative rather than at the farmer’s market. For wholesalers, gender of the household head and cooperative had most significantly negative effect, and age had a positive impact on farmer’s choice of market channels. Originality/value The results and implications obtained in the present study could help policymakers to establish a scientific-based and reasonable policy to encourage vegetable producers to participate in the circulation of vegetables in Beijing and guarantee their income in vegetable supply chain. The suggestions of this study could also be used for the improvement of the vegetable sector in other cities facing similar issues.

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