scholarly journals Impacts of Urban Expansion Forms on Ecosystem Services in Urban Agglomerations: A Case Study of Shanghai-Hangzhou Bay Urban Agglomeration

2021 ◽  
Vol 13 (10) ◽  
pp. 1908
Author(s):  
Sinan Li ◽  
Youyong He ◽  
Hanliang Xu ◽  
Congmou Zhu ◽  
Baiyu Dong ◽  
...  
Keyword(s):  
Ecosystem Services ◽  
Food Supply ◽  
Large Scale ◽  
Urban Expansion ◽  
Multiple Linear Regression Model ◽  
Urban Agglomeration ◽  
Hangzhou Bay ◽  
Small Scale ◽  
The Impact

Exploring impacts of urban expansion on ecosystem services has become a hot topic for regional sustainable development, while analyzing the ecological effects of urban expansion forms under different expansion intensities and city sizes is relatively rare. Therefore, taking a typical urban agglomeration, Shanghai-Hangzhou Bay Urban Agglomeration, as a case study, this study first analyzed the dynamics of urban expansion forms (leapfrogging, edge-expansion, and infilling) and four critical ecosystem services (carbon sequestration, food supply, habitat quality, and soil retention) in three periods from 1990 to 2019. The multiple linear regression model and zonal statistics analysis model were used to quantitatively identify the impacts of urban expansion forms on ecosystem services, taking into account different expansion intensities and city sizes. The results showed that the urban expansion trend in the study area experienced a morphological change from integration to diffusion and then to integration in 1990–2019; edge-expansion was the dominant expansion form. Food supply decreased continuously while other ecosystem services had fluctuating changes, and they all had spatial heterogeneity. The leapfrogging, edge-expansion, and infilling all had negative impacts on ecosystem services, and among them, the edge-expansion intensity had the highest influence degree in the early expansion, and the leapfrogging intensity occupied the dominant position in all influences with the expansion of urban scales. For different city sizes, the impact of edge-expansion in large-scale cities was greater than in small-scale cities in the early expansion, and the impact of leapfrogging in large-scale cities exceeded the edge-expansion in the subsequent expansion. These findings will help further understand the influential mechanisms between urban expansion and ecosystem services and provide a scientific basis for formulating reasonable urban planning.

scholarly journals LANDSCAPE DESIGN FOR SUSTAINABILITY AND ECOSYSTEM SERVICES IN AN URBAN ENVIRONMENT: CASE STUDY OF TEHRAN AND HIS KAN RIVER

2020 ◽  
Author(s):  
Ilda Vagge ◽  
◽  
Gioia Maddalena Gibelli ◽  
Alessio Gosetti Poli ◽  
◽  
...  
Keyword(s):  
Ecosystem Services ◽  
Large Scale ◽  
Management Practices ◽  
Natural Capital ◽  
Landscape Design ◽  
Green Spaces ◽  
Small Scale ◽  
Design For Sustainability ◽  
Holistic Method

The authors, with the awareness that climate change affects and changes the landscape, wanted to investigate how these changes are occurring within the metropolitan area of Tehran. Trying to keep a holistic method that embraces different disciplines, reasoning from large scale to small scale, the authors tried to study the main problems related to water scarcity and loss of green spaces. Subsequently they dedicated themselves to the identification of the present and missing ecosystem services, so that they could be used in the best possible way as tools for subsequent design choices. From the analysis obtained, the authors have created a masterplan with the desire to ensure a specific natural capital, the welfare of ecosystem services, and at the same time suggest good water management practices. It becomes essential to add an ecological accounting to the economic accounting, giving dignity to the natural system and the ecosystem services that derive from it.

scholarly journals Noise assessment of the small-scale wind farm

2019 ◽  
Vol 112 ◽  
pp. 02011
Author(s):  
Cristian-Gabriel Alionte ◽  
Daniel-Constantin Comeaga
Keyword(s):  
Power Systems ◽  
Large Scale ◽  
Wind Farm ◽  
Wind Farms ◽  
Small Scale ◽  
Large Power ◽  
Small Power ◽  
Noise Assessment ◽  
The Impact

The importance of renewable energy and especially of eolian systems is growing. For this reason, we propose the investigation of an important pollutant - the noise, which has become so important that European Commission and European Parliament introduced Directive 2002/49/CE relating to the assessment and management of environmental noise. So far, priority has been given to very large-scale systems connected to national energy systems, wind farms whose highly variable output power could be regulated by large power systems. Nowadays, with the development of small storage capacities, it is feasible to install small power wind turbines in cities of up to 10,000 inhabitants too. As a case study, we propose a simulation for a rural locality where individual wind units could be used. This specific case study is interesting because it provides a new perspective of the impact of noise on the quality of life when the use of this type of system is implemented on a large scale. This option, of distributed and small power wind turbine, can be implemented in the future as an alternative or an adding to the common systems.

THE ECOLOGICAL IMPACT ASSESSMENT OF URBAN DEVELOPMENT POLICIES: A CASE STUDY OF JI'NAN CITY, CHINA

2009 ◽  
Vol 11 (04) ◽  
pp. 427-450 ◽  
Author(s):  
SHUJUN WANG ◽  
JENNIFER LI ◽  
DAQIAN WU ◽  
RENQING WANG ◽  
KAI ZHANG ◽  
...  
Keyword(s):  
Ecosystem Services ◽  
Urban Development ◽  
Impact Assessment ◽  
Urban Expansion ◽  
Ecological Impact ◽  
Environmentally Friendly ◽  
Ecological Impact Assessment ◽  
Development Policies ◽  
The Impact

Based on socio-economic development and population growth, rapid urbanisation is currently happening in China, leading to urban expansion and land use changes. This, in turn, affects biodiversity, habitats and ecosystem services. It is therefore important to identify and assess the impact of urban development policies (UDP) on ecosystems and their components at a policy level. Ji'nan City, the capital of Shandong Province in Northern China, has been taken as a case study for assessing the ecological impact of UDP. The study found that, influenced by the traditional economy-oriented development strategy, the former UDP of Ji'nan City was mainly focused on urban socio-economic growth by speeding up the construction of urban infrastructure facilities, expanding urban built-up areas as well as strengthening the development of resource- and pollution-intensive industry, which in turn has negatively influenced the ecosystem services. The promulgation of eco-environmentally friendly UDP would contribute to protect and maintain the ecosystems and their components. Finally, recommendations for informing the legislation of new environmentally friendly UDPs and furthering the implementation of ecological impact assessment (EcIA) in China are proposed.

scholarly journals The True Valuation of Land Use Project in China Considering Ecosystem Services

2019 ◽  
Vol 13 (10) ◽  
pp. 46
Author(s):  
Man-Jing Li ◽  
Jia-Xu Han ◽  
Mao Zhu ◽  
Yuan-Biao Zhang
Keyword(s):  
Land Use ◽  
Ecosystem Services ◽  
Environmental Degradation ◽  
Economic Benefit ◽  
Large Scale ◽  
Environmental Cost ◽  
Small Scale ◽  
Small Community ◽  
Ecosystem Services Valuation ◽  
The Impact

Nowadays, most land use projects disregard the impact of their decisions on the biosphere. However, they often directly affect the biodiversity and lead to environmental degradation. Considering this issue, we first select indexes from four dimensions: provisioning, regulating, supporting and culture, and establish a static ecosystem services valuation (SESV) model using equivalent factor method. Then, introducing dynamic adjustment coefficient and current discount rate, we construct a dynamic ecosystem services valuation (DESV) model, which is used to put a value on the environmental cost of land use projects. Moreover, we use entropy method to calculate the weights of the economic benefit indexes we choose and establish an economic benefit (EB) model to determine project benefit. After that, we select Canglong District Development Project in Wuhan and Three Gorges Project in China as a small community-based project and a large national project respectively to perform a cost benefit analysis using the models. As the results, compared to small-scale project, large-scale project can greatly increase the economic benefit, but at the same time, it notably increases the environmental degradation cost. Effectiveness analysis proves that the results are effective and reliable.

Evaluating the Impacts of Rapid Urbanization on the Ecosystem Services of Cities in Circum-Bohai Sea Region - A Case Study of Yantai City

2014 ◽  
Vol 1073-1076 ◽  
pp. 1188-1195 ◽  
Author(s):  
Xiao Hui Ding ◽  
Wei Zhou Zhong ◽  
Yi Lan Liao ◽  
Shuo Xin Zhang ◽  
Yu Jiang
Keyword(s):  
Ecosystem Services ◽  
Bohai Sea ◽  
Urban Expansion ◽  
Local Economy ◽  
Urbanization Process ◽  
Rapid Urbanization ◽  
Sustainable Future ◽  
Local Ecosystem ◽  
The Impact

During the last 3 decades, developing countries especially China has experienced rapid urbanization process, which on one side have brought great leap forward of local economy as well as local social wellbeings, however on the other side such process has also led to great challenges on local ecosystem, which may jeopardize the potential of cities in these countries to meet their residents’ need and pursue more sustainable future. Therefore, a case study was taken in Yantai, a major city in Circum-Bohai Sea Region, and to assess the impact of rapid urbanization process on the local ecosystem services (ES), hence provided suggestions for pursuing more rational way of development of this city. Results showed that the decentralized pattern of urbanization, although has relatively moderate impact on Yantai’s ES, but may have substantially influences on the city’s sustainable future, therefore measures should be taken on restrain the decentralized urban expansion, reform of local authority regimes toward sustainable governance, as well as transforming regional industrial structure from secondary industry depended to more environmental friendly pattern.

Identifying key areas of imbalanced supply and demand of ecosystem services at the urban agglomeration scale: A case study of the Fujian Delta in China

2021 ◽  
pp. 148173
Author(s):  
Ruhong Xin ◽  
Hans Skov-Petersen ◽  
Jian Zeng ◽  
Jianhua Zhou ◽  
Kai Li ◽  
...  
Keyword(s):  
Ecosystem Services ◽  
Supply And Demand ◽  
Urban Agglomeration

scholarly journals Multitemporal Mapping of Post-Fire Land Cover Using Multiplatform PRISMA Hyperspectral and Sentinel-UAV Multispectral Data: Insights from Case Studies in Portugal and Italy

Sensors ◽  
2021 ◽  
Vol 21 (12) ◽  
pp. 3982
Author(s):  
Giacomo Lazzeri ◽  
William Frodella ◽  
Guglielmo Rossi ◽  
Sandro Moretti
Keyword(s):  
Remote Sensing ◽  
Large Scale ◽  
Fire Severity ◽  
Experimental Methodology ◽  
Vegetation Recovery ◽  
Burned Area ◽  
Remotely Sensed Data ◽  
The Impact ◽  
Sentinel 2

Wildfires have affected global forests and the Mediterranean area with increasing recurrency and intensity in the last years, with climate change resulting in reduced precipitations and higher temperatures. To assess the impact of wildfires on the environment, burned area mapping has become progressively more relevant. Initially carried out via field sketches, the advent of satellite remote sensing opened new possibilities, reducing the cost uncertainty and safety of the previous techniques. In the present study an experimental methodology was adopted to test the potential of advanced remote sensing techniques such as multispectral Sentinel-2, PRISMA hyperspectral satellite, and UAV (unmanned aerial vehicle) remotely-sensed data for the multitemporal mapping of burned areas by soil–vegetation recovery analysis in two test sites in Portugal and Italy. In case study one, innovative multiplatform data classification was performed with the correlation between Sentinel-2 RBR (relativized burn ratio) fire severity classes and the scene hyperspectral signature, performed with a pixel-by-pixel comparison leading to a converging classification. In the adopted methodology, RBR burned area analysis and vegetation recovery was tested for accordance with biophysical vegetation parameters (LAI, fCover, and fAPAR). In case study two, a UAV-sensed NDVI index was adopted for high-resolution mapping data collection. At a large scale, the Sentinel-2 RBR index proved to be efficient for burned area analysis, from both fire severity and vegetation recovery phenomena perspectives. Despite the elapsed time between the event and the acquisition, PRISMA hyperspectral converging classification based on Sentinel-2 was able to detect and discriminate different spectral signatures corresponding to different fire severity classes. At a slope scale, the UAV platform proved to be an effective tool for mapping and characterizing the burned area, giving clear advantage with respect to filed GPS mapping. Results highlighted that UAV platforms, if equipped with a hyperspectral sensor and used in a synergistic approach with PRISMA, would create a useful tool for satellite acquired data scene classification, allowing for the acquisition of a ground truth.

The impact of large-scale reclamation on hydro-dynamic environment–A case study of Xinghua Bay

2015 ◽  
Vol 15 (4) ◽  
pp. 583-592 ◽  
Author(s):  
Jing Yu ◽  
Xianwen Bao ◽  
Yang Ding ◽  
Wei Zhang ◽  
Lingling Zhou
Keyword(s):  
Large Scale ◽  
Dynamic Environment ◽  
The Impact
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