Some rules of simplification of area feature boundary and the method of acquiring spatial knowledge, such as maintaining area and shape of area feature, are discussed. This paper focuses on the progressive method of g...Some rules of simplification of area feature boundary and the method of acquiring spatial knowledge, such as maintaining area and shape of area feature, are discussed. This paper focuses on the progressive method of graphic simplification of area feature boundary with right angles based on its characteristics.展开更多
1 Introduction The huize Zn-Pb ore district in Yunnan province is locatedinthecentralsouthernofthe Sichuan—Yunnan—GuizhouPb-ZnPoly-metallic Mineralization Area in the southwestern margin of the Yangtze Block,and is ...1 Introduction The huize Zn-Pb ore district in Yunnan province is locatedinthecentralsouthernofthe Sichuan—Yunnan—GuizhouPb-ZnPoly-metallic Mineralization Area in the southwestern margin of the Yangtze Block,and is strictly controlled by fault structures.It has developed to one of the famous production bases of lead&zinc and germanium in China.展开更多
Regional studies are basically carried out in three areas. Studies on regional develop-ment theory, the characteristics and state of regional development, and on decision mak-ing and policy, In recent years, regional ...Regional studies are basically carried out in three areas. Studies on regional develop-ment theory, the characteristics and state of regional development, and on decision mak-ing and policy, In recent years, regional development theories were introduced to China,such as growth pole theory, gradient theory, and central place theory, etc. Much benefi-cial work has been done concerning these theories. Much exploration has also been madeon decision-making and policy studies in connection with regional, territorial and cityplanning. However, not much has been done with regard to the research on the character-istics and state of regional development and most of them are descriptive. Therefore, thereis a lack of guiding theory for decision-making and policy studies and also a lack of re-search, on regional characteristics and state, which has inevitably resulted in erroneousdecision-making and reform measures. The stepping up of research on the charecteristicsand state plays a key role in raising, the regional scientific research level. In this article, theauthors concentrate their research on the city fringe areas and try to explore thesocio-economic features and state of these particular areas.展开更多
文摘Some rules of simplification of area feature boundary and the method of acquiring spatial knowledge, such as maintaining area and shape of area feature, are discussed. This paper focuses on the progressive method of graphic simplification of area feature boundary with right angles based on its characteristics.
基金supported by the Funds for the program of the National Natural Science Foundation (Noes. 41572060, U1133602)Projects of YM Lab (2011)Innovation Team of Yunnan province and KMUST (2008,2012)
文摘1 Introduction The huize Zn-Pb ore district in Yunnan province is locatedinthecentralsouthernofthe Sichuan—Yunnan—GuizhouPb-ZnPoly-metallic Mineralization Area in the southwestern margin of the Yangtze Block,and is strictly controlled by fault structures.It has developed to one of the famous production bases of lead&zinc and germanium in China.
文摘Regional studies are basically carried out in three areas. Studies on regional develop-ment theory, the characteristics and state of regional development, and on decision mak-ing and policy, In recent years, regional development theories were introduced to China,such as growth pole theory, gradient theory, and central place theory, etc. Much benefi-cial work has been done concerning these theories. Much exploration has also been madeon decision-making and policy studies in connection with regional, territorial and cityplanning. However, not much has been done with regard to the research on the character-istics and state of regional development and most of them are descriptive. Therefore, thereis a lack of guiding theory for decision-making and policy studies and also a lack of re-search, on regional characteristics and state, which has inevitably resulted in erroneousdecision-making and reform measures. The stepping up of research on the charecteristicsand state plays a key role in raising, the regional scientific research level. In this article, theauthors concentrate their research on the city fringe areas and try to explore thesocio-economic features and state of these particular areas.
