scholarly journals Investigating the Patterns and Dynamics of Urban Green Space in China’s 70 Major Cities Using Satellite Remote Sensing

2020 ◽  
Vol 12 (12) ◽  
pp. 1929 ◽  
Author(s):  
Wenhui Kuang ◽  
Yinyin Dou
Keyword(s):  
Green Infrastructure ◽  
Urban Areas ◽  
Green Space ◽  
Urban Ecosystem ◽  
Urban Green Space ◽  
Western China ◽  
Urban Green ◽  
Effective Strategies ◽  
Data Platform ◽  
Western Zone

Urban green space (UGS) plays a pivotal role in improving urban ecosystem services and building a livable environment for urban dwellers. However, remotely sensed investigation of UGS at city scale is facing a challenge due to the pixels’ mosaics of buildings, squares, roads and green spaces in cities. Here we developed a new algorithm to unmix the fraction of UGS derived from Landsat TM/ETM/8 OLI using a big-data platform. The spatiotemporal patterns and dynamics of UGSs were examined for 70 major cities in China between 2000 and 2018. The results showed that the total area of UGS in these cities grew from 2780.66 km2 in 2000 to 6764.75 km2 in 2018, which more than doubled its area. As a result, the UGS area per inhabitant rose from 15.01 m2 in 2000 to 18.09 m2 in 2018. However, an uneven layout of UGS occurred among the coastal, western, northeastern and central zones. For example, the UGS percentage in newly expanded urban areas in the coastal zone rose significantly in 2000–2018, with an increase of 2.51%, compared to the decline in UGS in cities in the western zone. Therefore, the effective strategies we have developed should be adopted to show disparities and promote green infrastructure capacity building in those cities with less green space, especially in western China.

scholarly journals Urban Green Space Arrangement for an Optimal Landscape Planning Strategy for Runoff Reduction

Land ◽  
2021 ◽  
Vol 10 (9) ◽  
pp. 897
Author(s):  
Byungsun Yang ◽  
Dongkun Lee
Keyword(s):  
Green Infrastructure ◽  
Urban Areas ◽  
Green Space ◽  
Water Cycle ◽  
Urban Green Space ◽  
Space Distribution ◽  
Urban Water ◽  
Stormwater Treatment ◽  
Urban Green ◽  
Urban Water Cycle

Increased impervious surfaces due to urbanization have reduced evaporation and infiltration into the soil compared with existing natural water cycle systems, which causes various problems, such as urban floods, landslides, and deterioration of water quality. To effectively solve the urban water cycle issue, green infrastructure using urban green space has emerged to reduce runoff and increase evaporation. It has the advantage of restoring the water cycle system of urban areas by complementing the failure of conventional stormwater treatment systems. However, urban areas under high-density development have limited green space for stormwater treatment. Hence, it is necessary to efficiently utilize street trees and small green spaces to improve the urban water cycle through green space. In this study, we simulated different green space distribution scenarios in the virtual domain to find the optimal strategy of green space planning. Compared to clustered scenarios, dispersed green space distribution scenarios and placing green space downstream were more effective in reducing the runoff amount. The paper provides insights into the considerations for determining green space spatial plan and zoning regulations for stormwater treatment by green infrastructure.

scholarly journals Planning Strategy for the Reduction of Runoff Using Urban Green Space

2021 ◽  
Vol 13 (4) ◽  
pp. 2238
Author(s):  
Byungsun Yang ◽  
Dong Kun Lee
Keyword(s):  
Green Infrastructure ◽  
Urban Areas ◽  
Green Space ◽  
Reduction Rate ◽  
Area Ratio ◽  
Urban Green Space ◽  
Tree Canopy ◽  
Area Index ◽  
Urban Green ◽  
Runoff Reduction

Urban green space plays an important role in treating stormwater. In a highly dense urban environment, it is difficult to create large areas of green space. To utilize green space in urban areas effectively, locating an effective green space type is important. In this study, we examined the effect of green space on runoff reduction by comparing different green space setting scenarios. By changing the green space area ratio, green space structure, street tree type, and rainfall duration and amount, we compared the runoff rates. The results showed that the green space area ratio was more effective when more than 10% of the area was green space, and the runoff reduction rate was decreased more effectively when the tree canopy LAI (leaf area index) value increased from 2 to 2.5 than when the LAI value was higher. Green space was more effective at lower intensities of rainfall events. Different green space structures cause other effects on evaporation and soil infiltration. Each strategy needs to be implemented correctly for green infrastructure policy purposes.

scholarly journals Evaluation of the Equity and Regional Management of Some Urban Green Space Ecosystem Services: A Case Study of Main Urban Area of Xi’an City

Forests ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 813
Author(s):  
Hui Dang ◽  
Jing Li ◽  
Yumeng Zhang ◽  
Zixiang Zhou
Keyword(s):  
Ecosystem Services ◽  
Carbon Sequestration ◽  
Urban Areas ◽  
Green Space ◽  
Well Being ◽  
Urban Green Space ◽  
Green Spaces ◽  
Deposition Flux ◽  
Urban Green ◽  
Xi’An City

Urban green spaces can provide many types of ecosystem services for residents. An imbalance in the pattern of green spaces leads to an inequality of the benefits of such spaces. Given the current situation of environmental problems and the basic geographical conditions of Xi’an City, this study evaluated and mapped four kinds of ecosystem services from the perspective of equity: biodiversity, carbon sequestration, air purification, and climate regulation. Regionalization with dynamically constrained agglomerative clustering and partitioning (REDCAP) was used to obtain the partition groups of ecosystem services. The results indicate that first, the complexity of the urban green space community is low, and the level of biodiversity needs to be improved. The dry deposition flux of particulate matter (PM2.5) decreases from north to south, and green spaces enhance the adsorption of PM2.5. Carbon sequestration in the south and east is higher than that in the north and west, respectively. The average surface temperature in green spaces is lower than that in other urban areas. Second, urban green space resources in the study area are unevenly distributed. Therefore, ecosystem services in different areas are inequitable. Finally, based on the regionalization of integrated ecosystem services, an ecosystem services cluster was developed. This included 913 grid spaces, 12 partitions, and 5 clusters, which can provide a reference for distinct levels of ecosystem services management. This can assist urban managers who can use these indicators of ecosystem service levels for planning and guiding the overall development pattern of green spaces. The benefits would be a maximization of the ecological functions of green spaces, an improvement of the sustainable development of the city, and an improvement of people’s well-being.

Landscape Design of Urban Green Space Adaptive to Global Climate Change a Review

2011 ◽  
Vol 243-249 ◽  
pp. 6842-6845
Author(s):  
Jian Zhang ◽  
Yan Hui Sui ◽  
Xue Biao Geng
Keyword(s):  
Climate Change ◽  
Green Infrastructure ◽  
Green Space ◽  
Global Climate ◽  
Urban Green Space ◽  
Design Solution ◽  
Low Carbon ◽  
Urban Green ◽  
Ecological Principle ◽  
Low Carbon City

Low-carbon city provide both opportunity and challenge for landscape architecture. Urban green space planning and design are the most important way to achieve the landscape adaptive to globe climate change. In this paper, we introduced importance and significance of urban green space in low-carbon landscape, and reviewed many new design solutions, such as construction of green infrastructure, protection of natural vegetation and ecosystems, use of phytoremediation and application of urban productive landscape. Via innovative design solution and ecological principle, landscape architects would create a substantially new aesthetics to ensure the survivance of humanity.

scholarly journals THE EFFECT OF GREEN SPACE ON THE LAND SURFACE TEMPERATURE IN HUE CITY

2018 ◽  
Vol 55 (4C) ◽  
pp. 129
Author(s):  
Nguyen Bac Giang
Keyword(s):  
Surface Temperature ◽  
Land Surface Temperature ◽  
Land Surface ◽  
Urban Areas ◽  
Green Space ◽  
Satellite Image ◽  
Urban Green Space ◽  
Landsat 8 ◽  
Urban Green ◽  
Study Results

This paper presents the analysis of the effect of urban green space types on land surface temperature in Hue city. Data are collected with temperature monitoring results from each green space type and the interpretation of surface temperature based on Landsat 8 satellite image data to determine temperatures at different times of the year. Results showed that there was a significant correlation between types of urban green space and the surface temperature. Types of green space with a large area and vegetation indexes have a greater effect on temperature than areas with a smaller green space do. Green space types including forest green space, dedicated green space and agriculture green space have the most effect on the surface temperature. The forest area has the greatest influence on the temperature with a temperature difference of more than 1.6 degrees Celsius at 9:00 in the daytime. Besides, the results extracted from satellite images also show that the area of urban green space going to be reduced makes a contribution to increase the surface temperature of urban areas. The study results have established foundation for planning the green spaces in climate change challenges in Hue City.

On the Strategies of Optimizing the Landscape of the Urban Green Space: Based on Ecological Security

2013 ◽  
Vol 357-360 ◽  
pp. 2014-2017
Author(s):  
Feng Quan Ji ◽  
Jin Long Chu
Keyword(s):  
Sustainable Development ◽  
Green Space ◽  
Urban Ecosystem ◽  
Urban Green Space ◽  
Ecological Security ◽  
Negative Effects ◽  
Ecological Functions ◽  
Protection Measures ◽  
The Sustainable Development ◽  
Urban Green

The design and planning of the urban green landscape is manipulated to attain the integrity and sustainability of the process of landscaping the urban green space. Based on the analysis of the problems in landscaping the urban green space, this study attempts to explore the strategies of optimizing the landscape of the urban green space so as to improve the ecological functions of the eco-city, better the layout of the urban planning, and increase the green quantity. Appropriate regulation and protection measures have been adopted to prevent the negative effects in planning the urban green space, guarantee the safety of the urban ecosystem, and maintain the sustainable development of the vegetation sources of the gardens and green lands.

A MSPA-Based Approach of Urban Green Space System Planning

2012 ◽  
Vol 518-523 ◽  
pp. 5972-5979
Author(s):  
Qing Chang ◽  
Yao Qiu ◽  
Xue Li ◽  
Jian Sheng Wu
Keyword(s):  
Green Infrastructure ◽  
Green Space ◽  
Life Support ◽  
Urban Green Space ◽  
Green Spaces ◽  
Spatial Pattern Analysis ◽  
Space System ◽  
Urban Green ◽  
Urban Green Spaces ◽  
Land Use Decisions

Urban green spaces are considered as the life support system in a city, if systematically planned, developed, and maintained, they may provide various ecosystem services in a sustainable way. By integrating the morphological spatial pattern analysis (MSPA) and the green infrastructure (GI) network based on GIS, this study provided an urban green space planning method to guide urban sustainable spatial development and land use decisions in the Longgang District of Shenzhen in China. The approach has a robust performance in identifying the vital hubs and linkages in the urban green space system. It is hoped that this plan model based on MSPA, the function connectivity of urban green spaces could be farther strengthened so that some key zones in landscape pattern could be protected in the future development.

Public Perceptions of the Value of Urban Trees in the River Rouge Watershed

2013 ◽  
Vol 41 (3) ◽  
pp. 310-331 ◽  
Author(s):  
ANDREA OLIVE ◽  
LARA RUSCH ◽  
ANGELA AYERS
Keyword(s):  
Urban Areas ◽  
Green Space ◽  
Public Attitudes ◽  
Urban Forestry ◽  
Urban Green Space ◽  
Urban Trees ◽  
Tree Planting ◽  
Individual Responsibility ◽  
Urban Green ◽  
Personal Benefit

ABSTRACT This study examines attitudes toward urban green space among homeowners in the River Rouge Watershed of southeast Michigan. Trees play a significant role in urban areas by providing numerous environmental, economic and social benefits to community residents. But public attitudes toward trees are not well understood. Through survey research we found that residents are most likely to value trees for personal benefit (like shade) but that social reasons are also valuable (improving the neighborhood). We also illustrate that cost is not an impeding factor in willingness to plant trees. Finally, our study reveals that homeowners felt tree planting is both an individual responsibility as well as a government responsibility. On the basis of these findings, we recommend that urban forestry policy should focus on education and outreach in an attempt to marry tree-planting initiatives to the individual benefits of trees as well as the community benefits of urban green space.

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