Based on Artificial Intelligence Simulation Study on the Impact of Land Use on Coastal Ecological Security in China's Coastal Zone

2020 ◽  
Author(s):  
Yuelei Xu
Keyword(s):  
Land Use ◽  
Coastal Zone ◽  
Pearl River Delta ◽  
Economic Transformation ◽  
River Delta ◽  
Ecological Environment ◽  
Bohai Bay ◽  
Ecological Security ◽  
Bay Area ◽  
The Impact

<p>As a transitional area between land and ocean system, coastal zone is a sensitive area of global change, which gathers 2/3 of the global population and wealth. Under the background of coastal urbanization and ecological civilization construction in China, more attention has been attached to develop the coastal zone economy efficiently with the strong interference of human activities. However, the deficiency of a suitable method to evaluate coastal ecological environment, affects the balance between utilization and protection in the coastal zone. This research compared habitat quality in the present with that in the future, and used this as the evaluation index of the impact of land use on coastal ecological security. The impact of land use transformation on natural wetlands and the quality of natural habitats has been calculated based on the coastal land use data since 1980 and the forecast land use in 2050, which under the scenario of RCP 4.5 carbon dioxide emission simulated by FLUS model artificial intelligence. The results show that in recent 20 years, there have been obvious reclamation activities in China's coastal areas, especially in Bohai Bay area, Yangtze river delta and Pearl River Delta. From 1990 to 2010, the reclamation expansion areas are 272.49 km<sup>2</sup>，270.09 km<sup>2</sup> and 50.57 km<sup>2</sup>, respectively. With the development of economic transformation and ecological priority in the southeast coastal areas in recent years, the effect of habitat restoration will be remarkable by 2050, while habitat in Bohai Bay area and Pearl River Delta present an obvious degradation trend. These results, including the 30-metre-resolution habitat quality, can be used for reference for coastal ecological security maintenance and economic restructuring in different regions. This research will help to build the national ecological security evaluation system and formulate future policies for coastal ecological environment protection, and accelerate China's economic transformation.</p>

scholarly journals Impact of Land-Use Change on Atmospheric Environment Using Refined Land Surface Properties in the Pearl River Delta, China

2016 ◽  
Vol 2016 ◽  
pp. 1-15 ◽  
Author(s):  
Anqi Lai ◽  
Yiming Liu ◽  
Xiaoyang Chen ◽  
Ming Chang ◽  
Qi Fan ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Pearl River Delta ◽  
River Delta ◽  
Atmospheric Environment ◽  
Pearl River ◽  
The Pearl River Delta ◽  
Pollutant Concentrations ◽  
The Pearl River ◽  
The Impact

We replaced the outdated land-use of the Weather Research and Forecasting-Chemistry (WRF-Chem) model with a refined dataset, the Global Land Cover 2009 (GLC2009) dataset, to investigate the impact of land-use change on the regional atmospheric environment in the Pearl River Delta (PRD) region. Simulations of two months in 2014 (January and July) showed that land-use change increased the monthly averaged 2 m temperature by 0.24°C and 0.27°C in January and July, respectively. The relative humidity decreased by 2.02% and 2.23% in January and July, respectively. Due to the increase in ground roughness, the monthly averaged wind speed in January and July decreased by 0.19 m/s and 0.16 m/s. The planetary boundary layer height increased throughout the day and with larger relative increase during the nighttime. These subtle changes caused by land-use resulted in discernable changes in pollutant concentrations. Monthly averaged surface O3 concentration increased by 0.93 µg/m3 and 1.61 µg/m3 in January and July, while PM2.5 concentration decreased by 1.58 µg/m3 and 3.76 µg/m3, and the changes in pollutant concentrations were more noticeable during the nighttime. Overall, the impacts of land-use change on the atmospheric environment are obvious throughout the PRD region, especially in the urbanized areas.

scholarly journals Assessment of Land-Use/Cover Changes and Its Ecological Effect in Rapidly Urbanized Areas—Taking Pearl River Delta Urban Agglomeration as a Case

2021 ◽  
Vol 13 (9) ◽  
pp. 5075
Author(s):  
Panpan Hu ◽  
Feng Li ◽  
Xiao Sun ◽  
Yali Liu ◽  
Xinchuang Chen ◽  
...  
Keyword(s):  
Land Use ◽  
Pearl River Delta ◽  
Land Use Changes ◽  
River Delta ◽  
Ecological Environment ◽  
Pearl River ◽  
Environment Quality ◽  
The Pearl River Delta ◽  
The Pearl River

Based on the land-use data of 2000 and 2015, this study makes a quantitative analysis of the ecological environment effect in Pearl River Delta using the ecological environment quality index and the ecological contribution rate of land-use change types. The results showed the following: (1) During 2000–2015, the land-use changes in Pearl River Delta mainly manifested in the reduction of cultivated land, forest land, water area, and unused land, while the area of construction land and grassland showed an increasing trend. The quality of ecological environment in the Pearl River Delta was largely stable but slightly declined overall; (2) Over the past 15 years, the comprehensive ecological environment index of the Pearl River Delta urban agglomeration has decreased by 0.02. With an average annual decrease of 0.11%. The spatial expansion caused by urbanization had the most profound impact on the decline of the ecological environment quality in the Pearl River Delta; (3) The eco-environmental quality indices of various cities in the Pearl River Delta declined to varying degrees. The city with the largest decline was Dongguan, followed by Shenzhen and Zhongshan. The spatial differentiation characteristics of the eco-environmental quality index indicate that the ecological quality preferences of cities distributed around the study area and close to the inland areas, while the ecological quality of the central coastal cities are biased. The quality of the ecological environment is related to the basis of the regional ecological environment. The research results have important practical significance for maintaining regional ecological balance and promoting the sustainable use of land resources, and they provide a reference for the study of the ecological and environmental effects of land-use changes in key cities in economically developed areas.

Monitoring Land Use Change in the Pearl River Delta, China

2002 ◽  
pp. 69-90 ◽  
Author(s):  
Karen C. Seto ◽  
Robert K. Kaufmann ◽  
Curtis E. Woodcock
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Pearl River Delta ◽  
River Delta ◽  
Pearl River ◽  
The Pearl River Delta ◽  
The Pearl River

scholarly journals Workplace quality and labour turnover in the electronics industry of the Pearl River Delta, China

2012 ◽  
Vol 56 (1-2) ◽  
Author(s):  
Pamela Hartmann Kilian ◽  
Daniel Schiller ◽  
Frauke Kraas
Keyword(s):  
Migrant Workers ◽  
Pearl River Delta ◽  
River Delta ◽  
Global Markets ◽  
Pearl River ◽  
The Pearl River Delta ◽  
The Pearl River ◽  
Demand Changes ◽  
The Impact ◽  
Labour Turnover

AbstractExport-oriented manufacturing firms in developing countries need to be highly flexible in order to respond to demand changes in volatile global markets. By using a modified version of Atkinson’s flexible firm concept as a framework, it is the aim of this paper (i) to describe the impact of workplace quality on labour turnover and (ii) to derive implications of this relationship for upgrading processes. Empirical data are combined from two surveys of migrant workers and electronics firms in the Pearl River Delta, China.

scholarly journals Projected Urbanization Impacts on Surface Climate and Energy Budgets in the Pearl River Delta of China

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Chunhong Zhao ◽  
Qunou Jiang ◽  
Zhongxiao Sun ◽  
Haiyue Zhong ◽  
Shasha Lu
Keyword(s):  
Land Use ◽  
Air Temperature ◽  
Pearl River Delta ◽  
Surface Air Temperature ◽  
Climate Impacts ◽  
River Delta ◽  
Pearl River ◽  
Near Surface ◽  
The Pearl River Delta ◽  
The Pearl River

The climate impacts of future urbanization in the Pearl River Delta (PRD) region in China were simulated with the Dynamics of Land Systems (DLS) model and the Weather Research and Forecasting (WRF) model in this study. The land use and land cover data in 2000 and 2020 were simulated with the DLS model based on the regional development planning. Then the spatial and temporal changes of surface air temperature, ground heat flux, and regional precipitation in 2020 were quantified and analyzed through comparing simulation results by WRF. Results show that the built-up land will become the dominant land use type in the PRD in 2020. Besides, the near-surface air temperature shows an increasing trend on the whole region in both summer and winter, but with some seasonal variation. The urban temperature rise is more apparent in summer than it is in winter. In addition, there is some difference between the spatial pattern of precipitation in summer and winter in 2020; the spatial variation of precipitation is a bit greater in summer than it is in winter. Results can provide significant reference for the land use management to alleviate the climate change.

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