Analysis indices of ecological suitability were selected through literature reviewing and expert consultation. Visualization of assessment course was achieved based on different land use functions with the help of Arc...Analysis indices of ecological suitability were selected through literature reviewing and expert consultation. Visualization of assessment course was achieved based on different land use functions with the help of ArcGIS9.0 and GIS layers with different properties were overlapped and computed with GIS grids. Hence, the areas were colored and reclassified（colors representing different ecological suitability degrees）. Finally, land use functions can be readjusted by the evaluation results,providing references for rational planning of economic development zones.展开更多
In recent years,with high-speed development of economy and society,and fast propulsion of industrialization and urbanization process in the development zone,average annual land demand in the development zone also quic...In recent years,with high-speed development of economy and society,and fast propulsion of industrialization and urbanization process in the development zone,average annual land demand in the development zone also quickly enlarges,and the contradiction between high-speed growth of economy and shortage of land resources is apparent increasingly. Meanwhile,to guarantee crop safety and stick to 0. 12 billion hm2of farmland red line as a rigid constraint which could not be exceeded,the supply-demand contradiction of industrial land is more and more prominent. With industrial land scale continues to enlarge,land resources become more and more scarce,but there exists the phenomenon of low-efficiency land use and even idle. For land use characteristics of the development zone,taking Hefei City Economic and Technological Development Zone as an example,the countermeasures of perfecting industrial land transfer mechanism in the development zone are proposed.展开更多
Economic and technological development zone and high-tech industrial zone are important types of development zone in China,and there are differences in their connotation and goal setting.In this paper,basic data of na...Economic and technological development zone and high-tech industrial zone are important types of development zone in China,and there are differences in their connotation and goal setting.In this paper,basic data of national and provincial economic and technological development zones and high-tech industrial zones in China were collected and arranged.Kernel density analysis and other GIS spatial analysis techniques were used to analyze the evolution laws of spatial patterns of economic and technological development zones and high-tech industrial zones in cities from 2006 to 2018.First,the agglomeration intensity was compared by measuring the degree of regional agglomeration and dispersion on the two time nodes.Next,kernel density method was used to explore the evolution of the two in the spatial layout and location,and analyze development commonness and difference of economic and technological development zones and high-tech industrial zones.Finally,the trend and reason of spatial evolution of development zones with different leading industries were explored.Research results show that:①the agglomeration degree of layout of high-tech industrial zones is stronger than that of economic and technological development zones,and there are similarities and differences in distribution trend of spatial patterns of the two types of development zones;②the distribution of labor-intensive,capital-intensive and technology-intensive development zones is concentrated at smaller scales and dispersed at larger ones;③although there are differences between the economic and technological development zones and the high-tech industrial zones in the goal,support,structure and function,management system and so on,their spatial development presents a trend of convergence.In the future,when enhancing urban-rural planning and public administration,governments should combine the trend of industrial transformation and upgrading,and optimize spatial layout of development zones by adjusting industrial structure,layout,transportation and land use.展开更多
The Langfang Economic and Technical Development Zone is situated at the entry/exit of the Beijing-Tianjin-Tangshan Expressway, with a designed area of 14 sq km. The first-stage construction in the zone will cover an a...The Langfang Economic and Technical Development Zone is situated at the entry/exit of the Beijing-Tianjin-Tangshan Expressway, with a designed area of 14 sq km. The first-stage construction in the zone will cover an area of 2.2 sq kms. The zone is 40 kms away from Beijing, 60 km from Tianjin, 105 kms from Tianjin New Harbour, and only six kms from Langfang Railway Station. Telecommmunications facilities in the zone are connected with a 10, 000-line programme-controlled telephone switchboard imported by the city from Canada, 500-line long-distance automatic telephone equipment, and展开更多
Located in the southeast of AnhuiProvince, beside the Yangtze River, and atthe west verge of the Yangtze Delta, Wuhu isan open riverside city approved by the state,and a port opening to foreign ships,performing a link...Located in the southeast of AnhuiProvince, beside the Yangtze River, and atthe west verge of the Yangtze Delta, Wuhu isan open riverside city approved by the state,and a port opening to foreign ships,performing a link function in the generalstrategy of the Yangtze River, with Shanghaias the head and three gorges as the pillar. The Wuhu Economic and TechnicalDevelopment Zone, approved by the StateCouncil is the key point to developingWanjiang and responding Pudong. With aplanned area of 10 sq km, the zone is close展开更多
Economic and technological development zones (ETDZs) constitute special designated areas emerging in a period of economic transition characterized by the adoption of special policies and the creation of favorable envi...Economic and technological development zones (ETDZs) constitute special designated areas emerging in a period of economic transition characterized by the adoption of special policies and the creation of favorable environment conducive to the attraction of foreign capital and technology and to the development of an outward-oriented economy. At present, there are 41 State-level ETDZs, which together展开更多
The coastal area of China has faced major strategic planning and environmental pollution,including heavy metals pollution.This study aimed to provide a comprehensive evaluation of the effects of Cd pollution on the ec...The coastal area of China has faced major strategic planning and environmental pollution,including heavy metals pollution.This study aimed to provide a comprehensive evaluation of the effects of Cd pollution on the ecology in coastal areas of China.A soil Cd pollution database of 300 counties or districts in coastal areas was screened from academic dissertations and academic journal papers.Based on the database,the ecological risk was evaluated using entropy methods and probabilistic ecological risk assessment(PERA),and the advantages and disadvantages of these methods were analyzed.In China’s coastal areas,the soil Cd content in 10.33%of the counties was higher than the minimum of risk control value(1.5 mg/kg),and in 4.00%of the counties was higher than the maximum of risk control value(4.0 mg/kg).The ecological risks were highly compatible with national strategic planning areas.Guangxi Province,Zhejiang Province,and Guangdong Province ranked among the top three coastal areas for soil Cd contamination,and the ecological risks were 18.80%,17.89%,and 15.77%at the maximum no-effect concentration/lowest effect concentration(NOEC/LOEC)level.This study can provide insights to policymakers regarding the protection of ecosystems threatened by heavy metals in the process of regional strategic planning.展开更多
State-level economic and technological development zones (ETDZs) are products of China’sreform and opening-up policies and a new engine of growth for the Chinese economy. Theyhave made tremendous contributions to the...State-level economic and technological development zones (ETDZs) are products of China’sreform and opening-up policies and a new engine of growth for the Chinese economy. Theyhave made tremendous contributions to the development of the Chinese economy. However,some problems have emerged in the course of this progress and new challenges are stilllying ahead. Sustainable development is possible only when the strategy and objectives ofdevelopment are adjusted, when the integrated investment environment is optimized, whenindustries are upgraded, when technical innovations are made, when independent innovationcapabilities are lifted, when the mode of economic growth is changed, and when innovationsare made in government management.展开更多
With the rapid development of urbanization,the industrial parks originally located in the suburbs are gradually incorporated into the urban center.Industries that fail to follow the transformation of urban economic de...With the rapid development of urbanization,the industrial parks originally located in the suburbs are gradually incorporated into the urban center.Industries that fail to follow the transformation of urban economic development and are forced to close,or enterprises that move out without conforming to the environment,become a gray area within the city.Most of the existing assessments are conducting single assessment of some indicators,but than their actual benefits.Through the field investigation on the starting area of Handan Economic Development Zone,and the evaluation on the nature of land use,development intensity,investment and output,and idle land,inefficient land use in the park is identified.According to different evaluation results,different update and promotion methods are put forward.The research could provide a new evaluation method and idea for subsequent renewal and development of urban industrial parks.展开更多
This article analyses different characteristics of scale,site selection and function of the current economic andtehnological development zones in our country.It further proposes that it is inappropriate for the econom...This article analyses different characteristics of scale,site selection and function of the current economic andtehnological development zones in our country.It further proposes that it is inappropriate for the economic andtechnological development zones to follow the“pattern of the special zones”,but a new pattern of“small scale,unitaryfunction and closeness to old city”should be adopted to fit in with the practical conditions in our country.The scale,landuse structure and the relations between the development zone and the old city are the basic issues in planning forthe development zones.These three essential elements constitute the pattern of planning which determines to a certainextent the success or failure of the development zones.展开更多
Sustainable development of urban areas demands,among others,a holistic approach for identification and monitoring of environmental changes caused by human activities.In this study,the human-made impact on the geo-envi...Sustainable development of urban areas demands,among others,a holistic approach for identification and monitoring of environmental changes caused by human activities.In this study,the human-made impact on the geo-environment is studied through the application of the change detection study based on Principal Component Analysis on Landsat imageries and comparison of the digital elevation models taken at different times.The analysis is set up to identify and quantify the anthropogenic geomorphological changes in the loess landscape in Lanzhou city,Northwest China.Since 2002 Lanzhou has been undergoing a rapid economic development associated with construction boom.Due to limited flat building ground in the narrowed Yellow River Valley and subsequent expansion into the surrounding loess mountains,massive earthworks are conducted for reclamation of the suitable building ground.The results of the change detection analysis show that approximately 10%of the semi-natural study area corresponding to 35 km2 has been reshaped by leveling and terracing since 1994.In particular,the geomorphology was significantly changed in these and adjacent areas.For the single developing area Taipingyang,a moving volume of up to 57 million m3 was roughly estimated.展开更多
文摘Analysis indices of ecological suitability were selected through literature reviewing and expert consultation. Visualization of assessment course was achieved based on different land use functions with the help of ArcGIS9.0 and GIS layers with different properties were overlapped and computed with GIS grids. Hence, the areas were colored and reclassified（colors representing different ecological suitability degrees）. Finally, land use functions can be readjusted by the evaluation results,providing references for rational planning of economic development zones.
文摘In recent years,with high-speed development of economy and society,and fast propulsion of industrialization and urbanization process in the development zone,average annual land demand in the development zone also quickly enlarges,and the contradiction between high-speed growth of economy and shortage of land resources is apparent increasingly. Meanwhile,to guarantee crop safety and stick to 0. 12 billion hm2of farmland red line as a rigid constraint which could not be exceeded,the supply-demand contradiction of industrial land is more and more prominent. With industrial land scale continues to enlarge,land resources become more and more scarce,but there exists the phenomenon of low-efficiency land use and even idle. For land use characteristics of the development zone,taking Hefei City Economic and Technological Development Zone as an example,the countermeasures of perfecting industrial land transfer mechanism in the development zone are proposed.
基金Sponsored by Peking University (Shenzhen) Future City Lab Tiehan Research Fund。
文摘Economic and technological development zone and high-tech industrial zone are important types of development zone in China,and there are differences in their connotation and goal setting.In this paper,basic data of national and provincial economic and technological development zones and high-tech industrial zones in China were collected and arranged.Kernel density analysis and other GIS spatial analysis techniques were used to analyze the evolution laws of spatial patterns of economic and technological development zones and high-tech industrial zones in cities from 2006 to 2018.First,the agglomeration intensity was compared by measuring the degree of regional agglomeration and dispersion on the two time nodes.Next,kernel density method was used to explore the evolution of the two in the spatial layout and location,and analyze development commonness and difference of economic and technological development zones and high-tech industrial zones.Finally,the trend and reason of spatial evolution of development zones with different leading industries were explored.Research results show that:①the agglomeration degree of layout of high-tech industrial zones is stronger than that of economic and technological development zones,and there are similarities and differences in distribution trend of spatial patterns of the two types of development zones;②the distribution of labor-intensive,capital-intensive and technology-intensive development zones is concentrated at smaller scales and dispersed at larger ones;③although there are differences between the economic and technological development zones and the high-tech industrial zones in the goal,support,structure and function,management system and so on,their spatial development presents a trend of convergence.In the future,when enhancing urban-rural planning and public administration,governments should combine the trend of industrial transformation and upgrading,and optimize spatial layout of development zones by adjusting industrial structure,layout,transportation and land use.
文摘The Langfang Economic and Technical Development Zone is situated at the entry/exit of the Beijing-Tianjin-Tangshan Expressway, with a designed area of 14 sq km. The first-stage construction in the zone will cover an area of 2.2 sq kms. The zone is 40 kms away from Beijing, 60 km from Tianjin, 105 kms from Tianjin New Harbour, and only six kms from Langfang Railway Station. Telecommmunications facilities in the zone are connected with a 10, 000-line programme-controlled telephone switchboard imported by the city from Canada, 500-line long-distance automatic telephone equipment, and
文摘Located in the southeast of AnhuiProvince, beside the Yangtze River, and atthe west verge of the Yangtze Delta, Wuhu isan open riverside city approved by the state,and a port opening to foreign ships,performing a link function in the generalstrategy of the Yangtze River, with Shanghaias the head and three gorges as the pillar. The Wuhu Economic and TechnicalDevelopment Zone, approved by the StateCouncil is the key point to developingWanjiang and responding Pudong. With aplanned area of 10 sq km, the zone is close
基金This article is financially supported by National Natural Science Foundation of China.
文摘Economic and technological development zones (ETDZs) constitute special designated areas emerging in a period of economic transition characterized by the adoption of special policies and the creation of favorable environment conducive to the attraction of foreign capital and technology and to the development of an outward-oriented economy. At present, there are 41 State-level ETDZs, which together
基金This work was supported by the National Natural Science Foundation of China[41901255]Strategic Priority Research Program of the Chinese Academy of Science[XDA20010303].
文摘The coastal area of China has faced major strategic planning and environmental pollution,including heavy metals pollution.This study aimed to provide a comprehensive evaluation of the effects of Cd pollution on the ecology in coastal areas of China.A soil Cd pollution database of 300 counties or districts in coastal areas was screened from academic dissertations and academic journal papers.Based on the database,the ecological risk was evaluated using entropy methods and probabilistic ecological risk assessment(PERA),and the advantages and disadvantages of these methods were analyzed.In China’s coastal areas,the soil Cd content in 10.33%of the counties was higher than the minimum of risk control value(1.5 mg/kg),and in 4.00%of the counties was higher than the maximum of risk control value(4.0 mg/kg).The ecological risks were highly compatible with national strategic planning areas.Guangxi Province,Zhejiang Province,and Guangdong Province ranked among the top three coastal areas for soil Cd contamination,and the ecological risks were 18.80%,17.89%,and 15.77%at the maximum no-effect concentration/lowest effect concentration(NOEC/LOEC)level.This study can provide insights to policymakers regarding the protection of ecosystems threatened by heavy metals in the process of regional strategic planning.
文摘State-level economic and technological development zones (ETDZs) are products of China’sreform and opening-up policies and a new engine of growth for the Chinese economy. Theyhave made tremendous contributions to the development of the Chinese economy. However,some problems have emerged in the course of this progress and new challenges are stilllying ahead. Sustainable development is possible only when the strategy and objectives ofdevelopment are adjusted, when the integrated investment environment is optimized, whenindustries are upgraded, when technical innovations are made, when independent innovationcapabilities are lifted, when the mode of economic growth is changed, and when innovationsare made in government management.
文摘With the rapid development of urbanization,the industrial parks originally located in the suburbs are gradually incorporated into the urban center.Industries that fail to follow the transformation of urban economic development and are forced to close,or enterprises that move out without conforming to the environment,become a gray area within the city.Most of the existing assessments are conducting single assessment of some indicators,but than their actual benefits.Through the field investigation on the starting area of Handan Economic Development Zone,and the evaluation on the nature of land use,development intensity,investment and output,and idle land,inefficient land use in the park is identified.According to different evaluation results,different update and promotion methods are put forward.The research could provide a new evaluation method and idea for subsequent renewal and development of urban industrial parks.
文摘This article analyses different characteristics of scale,site selection and function of the current economic andtehnological development zones in our country.It further proposes that it is inappropriate for the economic andtechnological development zones to follow the“pattern of the special zones”,but a new pattern of“small scale,unitaryfunction and closeness to old city”should be adopted to fit in with the practical conditions in our country.The scale,landuse structure and the relations between the development zone and the old city are the basic issues in planning forthe development zones.These three essential elements constitute the pattern of planning which determines to a certainextent the success or failure of the development zones.
文摘Sustainable development of urban areas demands,among others,a holistic approach for identification and monitoring of environmental changes caused by human activities.In this study,the human-made impact on the geo-environment is studied through the application of the change detection study based on Principal Component Analysis on Landsat imageries and comparison of the digital elevation models taken at different times.The analysis is set up to identify and quantify the anthropogenic geomorphological changes in the loess landscape in Lanzhou city,Northwest China.Since 2002 Lanzhou has been undergoing a rapid economic development associated with construction boom.Due to limited flat building ground in the narrowed Yellow River Valley and subsequent expansion into the surrounding loess mountains,massive earthworks are conducted for reclamation of the suitable building ground.The results of the change detection analysis show that approximately 10%of the semi-natural study area corresponding to 35 km2 has been reshaped by leveling and terracing since 1994.In particular,the geomorphology was significantly changed in these and adjacent areas.For the single developing area Taipingyang,a moving volume of up to 57 million m3 was roughly estimated.
