Taking Caocun Town for example,we use GIS technology to systematically analyze the present situation of land use in Caocun Town on the basis of land reclamation rate model and land use degree model from quantitative s...Taking Caocun Town for example,we use GIS technology to systematically analyze the present situation of land use in Caocun Town on the basis of land reclamation rate model and land use degree model from quantitative structure,spatial distribution and degree of land use,in order to provide a basis for adjustment and optimization of land use structure,comprehensive land consolidation and full tapping of land use potential in Caocun Town,and provide a reference for rational land use and land protection policy formulation.展开更多
The metamorphosed sedimentary type of iron deposits（BIF） is the most important type of iron deposits in the world, and super-large iron ore clusters of this type include the Quadrilatero Ferrifero district and Caraj...The metamorphosed sedimentary type of iron deposits（BIF） is the most important type of iron deposits in the world, and super-large iron ore clusters of this type include the Quadrilatero Ferrifero district and Carajas in Brazil, Hamersley in Australia, Kursk in Russia, Central Province of India and Anshan-Benxi in China. Subordinated types of iron deposits are magmatic, volcanic-hosted and sedimentary ones. This paper briefly introduces the geological characteristics of major super-large iron ore clusters in the world. The proven reserves of iron ores in China are relatively abundant, but they are mainly low-grade ores. Moreover, a considerate part of iron ores are difficult to utilize for their difficult ore dressing, deep burial or other reasons. Iron ore deposits are relatively concentrated in 11 metallogenic provinces（belts）, such as the Anshan-Benxi, eastern Hebei, Xichang-Central Yunnan Province and middle-lower reaches of Yangtze River. The main minerogenetic epoches vary widely from the Archean to Quaternary, and are mainly the Late Archean to Middle Proterozoic, Variscan, and Yanshanian periods. The main 7 genetic types of iron deposits in China are metamorphosed sedimentary type（BIF）, magmatic type, volcanic-hosted type, skarn type, hydrothermal type, sedimentary type and weathered leaching type. The iron-rich ores occur predominantly in the skarn and marine volcanic-hosted iron deposits, locally in the metamorphosed sedimentary type（BIF） as hydrothermal reformation products. The theory of minerogenetic series of mineral deposits and minerogenic models has applied in investigation and prospecting of iron ore deposits. A combination of deep analyses of aeromagnetic anomalies and geomagnetic anomalies, with gravity anomalies are an effective method to seeking large and deep-buried iron deposits. China has a relatively great oresearching potential of iron ores, especially for metamorphosed sedimentary, skarn, and marine volcanic-hosted iron deposits. For the lower guarantee degree of iron and steel industry, China should give a trading and open the foreign mining markets.展开更多
Some places in Henan Province are investigated by using sample surveys and interviews. Result shows that land circulation in less developed agricultural area of Henan Province has the characteristics of small scale,si...Some places in Henan Province are investigated by using sample surveys and interviews. Result shows that land circulation in less developed agricultural area of Henan Province has the characteristics of small scale,single form,short period,and circulation land in economic core region. Problems in land circulation are as follows:slow transfer of rural surplus labor force,hard implementation of fundamental land circulation,complicated mentality towards rural land circulation,many misgivings about land circulation,the unformed social service system of land circulation,and imperfect agricultural risk prevention mechanism for circulated land use. Based on the characteristics of land circulation,suggestions for promoting the land circulation of less developed agricultural areas are put forward in order to solve the problems in land circulation and to lay the foundation for effective implementation of land circulation,such as speeding up the development of urbanization,developing the circulation of collective land,effectively implementing the laws and regulations of rural collective land circulation,transferring land according to law,establishing market mechanism of agricultural land circulation,promoting the agricultural industrialization,establishing market mechanism of agricultural land circulation,promoting the agricultural industrialization,energetically readjusting rural industrial structure,and developing economy with local characteristics.展开更多
Forward: The experience of land management in Shenzhen gives us the enlightenments: First, it is imperative toimplement commodification of land in China and full scale implementation. This trend will lead to the follo...Forward: The experience of land management in Shenzhen gives us the enlightenments: First, it is imperative toimplement commodification of land in China and full scale implementation. This trend will lead to the following 4benefits, namely: increase the effectiveness of land use dispositioning accelerate opening up to the outside world, allowfair competition among enterprises and enable the concentration of financial resources of the country and to bringabout a new source of financial income for the country. Secondly, there should be a clear model in thecommodification of land in China. It is appropriate for Shenzhen to choose the Commonwealth model i.e., the HongKong model, for reference for its commodification of land. However, we must abide by the principle that land re-sources are reasonably created under the condition that the relationship between ownership of land and rights to useremains unchanged. To implement commodification of land, it is necessary to establish perfect market for the tradingof parcels of land. This market has to be based on the prereguisite of public ownership of land, monopolized by thestate in accordance to the principle (of public ownership of land, monopolized by the state in accordance to the prin-ciple) of commodification. Thirdly, this management must be implemented by phases in different places instead ofmass action. The whole country can be roughly divided into four categories: the Special Economic Zones (SEZ) repre-sented by Shenzhen, the heavy industrial base along the southeast coastal region, some medium-sized open cities andthe northwest and southwest regions, where different practice should be adopted in different categories. Fourthly,commodification of land is closely linked with commodification of housing properties the whole situation of whichneeds to be taken into consideration in a comprehensive manner.展开更多
文摘Taking Caocun Town for example,we use GIS technology to systematically analyze the present situation of land use in Caocun Town on the basis of land reclamation rate model and land use degree model from quantitative structure,spatial distribution and degree of land use,in order to provide a basis for adjustment and optimization of land use structure,comprehensive land consolidation and full tapping of land use potential in Caocun Town,and provide a reference for rational land use and land protection policy formulation.
基金supported by the National Natural Science Foundation of China (grant No. 40773038the Program of High-level Geological Talents (201309)Youth Geological Talents (201112) of the China Geological Survey
文摘The metamorphosed sedimentary type of iron deposits（BIF） is the most important type of iron deposits in the world, and super-large iron ore clusters of this type include the Quadrilatero Ferrifero district and Carajas in Brazil, Hamersley in Australia, Kursk in Russia, Central Province of India and Anshan-Benxi in China. Subordinated types of iron deposits are magmatic, volcanic-hosted and sedimentary ones. This paper briefly introduces the geological characteristics of major super-large iron ore clusters in the world. The proven reserves of iron ores in China are relatively abundant, but they are mainly low-grade ores. Moreover, a considerate part of iron ores are difficult to utilize for their difficult ore dressing, deep burial or other reasons. Iron ore deposits are relatively concentrated in 11 metallogenic provinces（belts）, such as the Anshan-Benxi, eastern Hebei, Xichang-Central Yunnan Province and middle-lower reaches of Yangtze River. The main minerogenetic epoches vary widely from the Archean to Quaternary, and are mainly the Late Archean to Middle Proterozoic, Variscan, and Yanshanian periods. The main 7 genetic types of iron deposits in China are metamorphosed sedimentary type（BIF）, magmatic type, volcanic-hosted type, skarn type, hydrothermal type, sedimentary type and weathered leaching type. The iron-rich ores occur predominantly in the skarn and marine volcanic-hosted iron deposits, locally in the metamorphosed sedimentary type（BIF） as hydrothermal reformation products. The theory of minerogenetic series of mineral deposits and minerogenic models has applied in investigation and prospecting of iron ore deposits. A combination of deep analyses of aeromagnetic anomalies and geomagnetic anomalies, with gravity anomalies are an effective method to seeking large and deep-buried iron deposits. China has a relatively great oresearching potential of iron ores, especially for metamorphosed sedimentary, skarn, and marine volcanic-hosted iron deposits. For the lower guarantee degree of iron and steel industry, China should give a trading and open the foreign mining markets.
基金Supported by the Soft Science Research Program of Hubei Provincial Science & Technology Department (0413020310)
文摘Some places in Henan Province are investigated by using sample surveys and interviews. Result shows that land circulation in less developed agricultural area of Henan Province has the characteristics of small scale,single form,short period,and circulation land in economic core region. Problems in land circulation are as follows:slow transfer of rural surplus labor force,hard implementation of fundamental land circulation,complicated mentality towards rural land circulation,many misgivings about land circulation,the unformed social service system of land circulation,and imperfect agricultural risk prevention mechanism for circulated land use. Based on the characteristics of land circulation,suggestions for promoting the land circulation of less developed agricultural areas are put forward in order to solve the problems in land circulation and to lay the foundation for effective implementation of land circulation,such as speeding up the development of urbanization,developing the circulation of collective land,effectively implementing the laws and regulations of rural collective land circulation,transferring land according to law,establishing market mechanism of agricultural land circulation,promoting the agricultural industrialization,establishing market mechanism of agricultural land circulation,promoting the agricultural industrialization,energetically readjusting rural industrial structure,and developing economy with local characteristics.
文摘Forward: The experience of land management in Shenzhen gives us the enlightenments: First, it is imperative toimplement commodification of land in China and full scale implementation. This trend will lead to the following 4benefits, namely: increase the effectiveness of land use dispositioning accelerate opening up to the outside world, allowfair competition among enterprises and enable the concentration of financial resources of the country and to bringabout a new source of financial income for the country. Secondly, there should be a clear model in thecommodification of land in China. It is appropriate for Shenzhen to choose the Commonwealth model i.e., the HongKong model, for reference for its commodification of land. However, we must abide by the principle that land re-sources are reasonably created under the condition that the relationship between ownership of land and rights to useremains unchanged. To implement commodification of land, it is necessary to establish perfect market for the tradingof parcels of land. This market has to be based on the prereguisite of public ownership of land, monopolized by thestate in accordance to the principle (of public ownership of land, monopolized by the state in accordance to the prin-ciple) of commodification. Thirdly, this management must be implemented by phases in different places instead ofmass action. The whole country can be roughly divided into four categories: the Special Economic Zones (SEZ) repre-sented by Shenzhen, the heavy industrial base along the southeast coastal region, some medium-sized open cities andthe northwest and southwest regions, where different practice should be adopted in different categories. Fourthly,commodification of land is closely linked with commodification of housing properties the whole situation of whichneeds to be taken into consideration in a comprehensive manner.
