Analysis of spatial-temporal evolution and factors that influences ecological service values in Wuhan Urban Agglomeration, China

2019 ◽  
Vol 39 (4) ◽  
Author(s):  
赵育恒 ZHAO Yuheng ◽  
曾晨 ZENG Chen
Keyword(s):  
Temporal Evolution ◽  
Urban Agglomeration ◽  
Ecological Service ◽  
Wuhan Urban Agglomeration

scholarly journals How Do Population Flows Promote Urban–Rural Integration? Addressing Migrants’ Farmland Arrangement and Social Integration in China’s Urban Agglomeration Regions

Land ◽  
2022 ◽  
Vol 11 (1) ◽  
pp. 86
Author(s):  
Yanan Li ◽  
Chan Xiong ◽  
Yan Song
Keyword(s):  
Social Integration ◽  
Rural Areas ◽  
Positive Impact ◽  
Central City ◽  
Urban Agglomeration ◽  
Resource Flows ◽  
Urban Rural ◽  
Wuhan Urban Agglomeration ◽  
Urban And Rural Areas ◽  
High Degree

China’s urban–rural relationships have been changed dramatically by the intensifying population flows, especially in urban agglomeration regions. This study contributes to the interpretation of urban–rural integration mechanisms in urban agglomeration by constructing a conceptual framework of migration-related resource flows. Taking the Wuhan urban agglomeration as an example, migrants’ farmland arrangement, migration pattern, and social integration have been investigated to uncover the spatial and temporal characteristics of the urban–rural interaction, based on the data from the China Migrants Dynamic Survey in 2012–2017. The findings indicate that the farmland circulation in the Wuhan urban agglomeration was generally low, but slightly higher than that of the national average. The central city, Wuhan, had a high degree of family migration and social integration, indicating stronger resource flows in developed areas. However, its farmland circulation level was lower than that of non-central cities. The unsynchronized interaction of resources in urban and rural areas should be taken seriously, especially in areas with a relatively developed urban economy. The advantages of the central city in absorbing and settling migrants confirmed the positive impact of the urban agglomeration on promoting urban–rural integration.

Evaluation of water security: an integrated approach applied in Wuhan urban agglomeration, China

2012 ◽  
Vol 66 (1) ◽  
pp. 79-87 ◽  
Author(s):  
Dongguo Shao ◽  
Fengshun Yang ◽  
Chun Xiao ◽  
Xuezhi Tan
Keyword(s):  
Flood Control ◽  
Evaluation Model ◽  
Water Environment ◽  
Rank Correlation ◽  
Water Security ◽  
Integrated Approach ◽  
Urban Agglomeration ◽  
State Of Water ◽  
Wuhan Urban Agglomeration ◽  
Good Agreement

To evaluate water security, the Water Resources Sustainability Evaluation Model has been developed. The model employs four criteria (economic development, flood control security, water supply security, and water environment security) and has 22 indicators, integrating them using their relative weights. The model is applied to evaluate the water security of Wuhan urban agglomeration, China. The values of the indicators are normalized using the exponential efficacy functions based on the law of diminishing marginal utility. The evaluation results show that, overall, the state of water security in Wuhan urban agglomeration is good, which is in good agreement with the true situation. The comparison between the results of the model and other three evaluation methods by the Spearman coefficient of rank correlation verifies the science and reliability of the developed model. Consequently, it is concluded that the model can be an effective tool for evaluating the states of water security and provide a basis on which to create policies for improving inadequacies in water security.

scholarly journals Spatio-temporal evolution and mechanism of regional innovation efficiency: Evidence from Yangtze River Delta Urban Agglomeration of China

PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0253598
Author(s):  
Xianzhong Cao ◽  
Bo Chen ◽  
Yuefang Si ◽  
Senlin Hu ◽  
Gang Zeng
Keyword(s):  
Yangtze River ◽  
Temporal Evolution ◽  
Returns To Scale ◽  
Yangtze River Delta ◽  
Spatial Inequality ◽  
River Delta ◽  
Urban Agglomeration ◽  
Regional Innovation ◽  
Spatio Temporal ◽  
Constant Returns To Scale

Regional innovation is an important research topic in economic geography, the spatio-temporal evolution and mechanism of regional innovation efficiency have recently become a hot for economic geographers. From the perspective of input and output efficiency, this paper constructs evaluation indicator of regional innovation, with the help of Constant Returns to Scale (CRS) and Variable Returns to Scale (VRS) models, and Malmquist indicator method of Data Envelopment Analysis (DEA), to analyze regional innovation performance, evolution trend, spatial differentiation, and evolution mechanism of Yangtze River Delta Urban Agglomeration (YRDUA) of China. The results show that: (i) Innovation efficiency of YRDUA is generally low, most of which is less than 80 percent of optimal efficiency; however, it kept rising from 2000 to 2015. (ii) Spatial inequality of regional innovation in YRDUA is significant, with a spatial pattern in the shape of “Z”, composed by Hefei, Nanjing, Shanghai, Hangzhou and Ningbo, innovation efficiency of Shanghai is higher than Zhejiang, Anhui and Jiangsu. (iii) Technology progress is the most important influencing factor, all kinds of changing indicator show a trend of rise, and the total factor productivity is changing significantly. This research can provide theoretical reference for the YRDUA to achieve high-quality integration.

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