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Multi-scale coupling analysis of urbanization and ecosystem services supply-demand budget in the Beijing-Tianjin-Hebei region, China

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Journal of Geographical Sciences 2023年第2期33卷 340-356页

作者： ZHANG Fan XU Ning WANG Chao GUO Mingjing Pankaj KUMAR Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchCASBeijing 100101China State Key Laboratory of Water Environment Simulation School of EnvironmentBeijing Normal UniversityBeijing 100875China School of Economics and Management China University of GeosciencesWuhan 430074China Key Laboratory of Land and Resources Strategy Research Ministry of Natural Resources of the People’s Republic of ChinaBeijing 100812China Research Center of Resource and Environmental Economics China University of GeosciencesWuhan 430074China Department of Geography Delhi School of EconomicsUniversity of DelhiNew Delhi 110021India

Rapid economic development and human activities have severely affected ecosystem *** of the spatial distribution of areas of rapid urbanization is the basis for optimizing urban-ecological spatial *** paper evaluated the spatial distribution of urbanization in the Beijing-Tianjin-Hebei(BTH)region,and then quantified the ecosystem services(ES)budget in the region based on an ES supply and demand *** results showed that(1)urbanization patterns in the BTH region were relatively stable from 2000 to 2015,with clear patterns of low levels of urbanization in the northwest and high levels in the southeast;(2)areas with positive ES budget values were found throughout the region,except in built-up areas,with high ES supply areas concentrated in the northwest,and high ES demand areas in the southeast;(3)at both the county and prefecture-city levels,urbanization had negative,positive,and negative correlations with ES supply,demand,and budget,respectively;(4)the coupling coordination degree(CCD)increased,with high CCD values in the *** on these results,policy recommendations include strengthening rational land-use planning and ecosystem management,promoting the coordinated development of the economy and ecological function,and coordinating the provision of production-life-ecological functions.

关键词： urbanization ecosystem services supply-demand coupling Beijing-Tianjin-Hebei region

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Optimization Model for School Transportation Based on supply-demand Analyses

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Journal of Software Engineering and Applications 2019年第6期12卷 215-225页

作者： Jairo Ortega János Tóth Juan Palaguachi Imad Sabbani Department of Transport Technology and Economics Budapest University of Technology and Economics Budapest Hungary Department of Transportation Escuela Superior Politécnica of Chimborazo Riobamba Ecuador Department of Sciences and Techniques University of Hassan II and Franche-Comté University Besan&#231 on France

This paper presents a new conception model of school transportation supply-demand ratio (STSDR) in order to define the number of school buses needed in a limited area and to describe the conditions of school transport system. For this purpose, a mathematical equation was elaborated to simulate the real system based on the school transport conditions and on the estimated results of STSDR from 15 zones of Cuenca city in Ecuador. The data used in our model was collected from several diverse sources (i.e. administrative data and survey data). The estimated results have shown that our equation has described efficiently the school transport system by reaching an accuracy of 96%. Therefore, our model is suitable for statistical estimation given adequate data and will be useful in school transport planning policy. Given that, it is a support model for making decisions which seek efficiency in supply and demand balance.

关键词： School Transport Model Optimization supply-demand Travel to School

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The supply-demand Analysis and Mechanism Innovation of Chinese Rural Public Goods

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Asian Agricultural Research 2011年第5期3卷 44-47页

作者： XIA Xiang-yang Marxism and Leninism Education,and Hebei Engineering and Technical College,Cangzhou 061001,China

The connotation of rural public goods is *** rural public goods refer to the products and labors that satisfy the production and living of rural residents,economic growth and social *** rural public goods is characterized by non-excludability,non-competitiveness and indispensability of other general public *** supply situation of Chinese government to rural public goods is analyzed,as well as the demand situation of rural public goods,which includes farmers' demand on training,the assistance demand of rural weak groups,farmers' demand on comfortable living conditions and farmers' demand on "soft" public *** paths for innovating the supply mechanism of rural public goods are put forward,which cover perfecting the decision mechanism of public goods supply;scientifically distributing the supply responsibility of rural public goods;facilitating the reform of each supporting equipment and exploring the multiple capital collecting channels of rural public goods.

关键词： Rural public goods supply-demand analysis Mechanis

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Analysis and Forecast of China’s Grain supply and demand Quality Grade Structural Balance

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American Journal of Plant Sciences 2018年第8期9卷 1747-1758页

作者： Bingjun Li Weiming Yang Mengfei Wu College of Information and Management Science Henan Agricultural University Zhengzhou China

Based on the analysis of China’s grain production and demand quality grade, this paper uses the non-equidistance GM (1,1) model and the inference algorithm to predict the structural balance of the supply and demand grades of China’s four major grain crops. The results show that the supply and demand for wheat, corn and rice can maintain a quantitative balance. While, it’s difficult to achieve a quality grade balance in wheat and rice and keep a supply and demand balance in terms of quantity and quality of soybean. Simultaneously, the supply of premium grade corn is greater than the demand. The analysis and prediction results can reflect the existing structural balance matter of grain supply and demand at different quality grades in China, and provide theoretical basis for governments to formulate relevant policies.

关键词： Quality Grade supply-demand Structure Non-Equidistance GM (1 1) Model

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Study upon the Spatial Structure of Regional Eco-tourism-Based upon the Perspective of supply and demand and Competition Field

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Journal of Landscape Research 2010年第10期2卷 51-55页

作者：方世敏赵金金湘潭大学旅游管理学院湖南湘潭411105

Along with the coming of the low-carbon era, people have paid more and more attention to the natural environment and eco-tourism will embrace a huge development. From the perspectives of the market relationship of supply-demand in economics and of field competition in physics, this paper has discussed upon the present status of the spatial structure of eco-tourism, and analyzed the relationship between supply-demand and field, in order to clarify the direction for the balance between supply and demand in the field and to guide eco-tourism to the way of sustainable development.

关键词： Regional eco-tourism Spatial structure supply-demand Competitive field

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Exploitation, Utilization Status, and Development Prospects of Water Resources in Ningbo City

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Journal of Resources and Ecology 2017年第2期8卷 205-211页

作者：吴艳娟杨艳昭封志明孙通中国科学院地理科学与资源研究所北京100101 中国科学院大学北京100049

Water resources insufficiency is one of the bottlenecks that restrict sustainable socio-economic development in Ningbo city. Good handling of the relationship between water resources utilization and development is of great significance for the realization of continuous economic growth and sustainable socio-economic development. This study systematically evaluated water resources utilization with respect to water supply and demand. Water resources development and utilization prospects and regional differences were then assessed at multiple scales, at both county/district and city level in Ningbo city, using the water resources carrying index. Results showed that：（1） The volume of water resources supply and consumption gradually rose each year, with surface water as the primary source and groundwater as the secondary source. Regarding consumption, industrial water consumption was the primary element, and domestic and environmental water consumption were the secondary elements. Even though the use of water resources for irrigation, secondary and, tertiary industry were becoming more efficient, comprehensive per capita water consumption was gradually increasing.（2） The water resources carrying index for Ningbo city fluctuated in the range of 4.51–23.35 during 2001–2015; the degree of water resource utilization and potential exploitation evaluation of water resources were not stable. The average value of the water resources carrying index was 11.68; the degree of utilization of water resources was very high, and the introduction of water from external water bodies was necessary, to the extent external source were available.（3） Future water resources exploitation will be quite difficult in Ningbo city, especially in Cixi county, Ningbo municipal district and Yuyao county. So the introduction of external water as a supplemental source will be required.

关键词： water resources supply-demand carrying index Ningbo city

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