Abstract：Based on GIS, this paper presents a case study of major function zone of Yun'an County in Guangdong Province. The author holds that the dividing of major function zone is related to two important conditions. One is the conditions which accelerate urban development. The other is the one which restricts urban development. Resources carrying capacity includes two criterions: natural and human resources; Social supporting ability includes social facility and social guarantee criteria; Economic developing ability includes economic accounts, economic quality and economic development speed criteria; Aggregation-radiation ability includes urbanization grades and town grades; Geo-position supporting ability includes infrastructure and transportation convenient criteria; External promotion ability includes public cognitive degree; Physical ecology factors include water, demography and vegetation criteria; Ecological services are physical protection districts in different grades; And hazard factors are mainly water disaster. According to physical and economic conditions, grids with scales of 100 meters are set to be evaluation units. The environments, physical ecology, ecological services, hazards in units are calculated for protecting environment and restricting urban development. Resources carrying capacity, social supporting ability, economics developing ability, aggregation-radiation ability, geo-position supporting ability, and external promotion ability were used to evaluate social and economic developing ability. The weights of resources carrying capacity, social supporting ability, economic developing ability, aggregation-emission ability, geo-position supporting ability and external promotion ability are set to 0.14, 0.16, 0.27, 0.13, 0.19, and 0.11 respectively.
In the light of the consideration of protecting ecology and developing economy, and building evaluation arrays, the author divided the major function zones of Yun'an county into 6 grades based on urban development extent. They are priority development district, suitable development district, little suitable development district, major protecting district, agriculture development district and control development district. The area of each district is 24.91, 61.57, 33.25, 306.28, 47.59 and 722.57 km2 respectively. Moreover, policies for each major function zone are analyzed and put forward. The result indicates that there are only 7.23% places suitable to be developed while other places need to be protected. Finally, the result points out that the responsibility of protection of some main functional zones is very serious while developing economy in Yun'an County.
陈敏. 县域主体功能区划分研究——以广东省云安县为例[J]. 人文地理, 2008, 23(6): 55-59.
CHEN Min. MAJOR FUNCTION ZONE OF YUN'AN COUNTY IN GUANGDONG PROVINCE. HUMAN GEOGRAPHY, 2008, 23(6): 55-59.
