Analysis On Spatial Pattern Of Regional Agricultural Economy And Its Influencing Factors

In early 1990s, the development of Spatial Economy laid down certain theory foundation for the study of spatiality of economy. Such spatial research is defined as the research of economic spatial pattern in Spatial Economy to explain the reasons and formation mechanism for phenomenon of spatial agglomeration. Based on such explanation of reasons and mechanism to discuss the problems of economic development in a certain region (or A country).GIS act as the major means in the research of modern geography and can achieve a good results in the research of spatial pattern and phenomenon of agglomeration. The paper uses the spatial analysis functions of GIS to study the spatial pattern of agricultural economy within a narrow range. The regression and impact factors based on causes of such pattern provide a concrete way for economic spatial research.First, The spatial correlation exponent is one of the important methods in GIS's spatial pattern research. Moran's I is used to analyze the spatial pattern of agricultural economy in the City of Tianshui to prove that phenomenon of spatial agglomeration. The study on different from the spatial pattern of agricultural economy in City of TianShui indicates that TianShui appears a rule of circle structure in agricultural economy and forms a more obvious region of river valley landforms where agricultural economy is better developed. And in this process, the result based on the time of traffic spatial weight analysis is more practical than that based on traditional weight matrix analysis.Second, based on the research of hot-spot areas of agricultural economy in the city of Tianshui through Gi statistics, the phenomenon that hot-spot areas locally locate at every district government and appear a circle structure around the government is in line with the general rules of economic development.Third, we used the spatial pattern to analyze the economic affection by factors of society and nature. The correlative analysis indicates that a strong correlation exists between Tianshui's agricultural economy and the total rural population, agro-investments such as applications of chemical fertilizer and agricultural plastics; Whenas in the regions where the agricultural economic development is backward, agricultural economic is less influenced by traffic density and link efficiency; The correlation between climate and agricultural economy is small in the narrow region where the climate is unclear different.Fourth, based on the data from years 1993 to 2003, we analyze the correlation on agricultural economy and its impact factors in the time series and find the villages and towns where annual rainfall, annual evaporation and annual sunshine hours appear a more high correlation with agricultural economic colligated index exist a certain spatial rule.Fifth, based on the upwards results, we use the spatial distance, the total rural population, applications of chemical fertilizer and agricultural plastics to simulate the spatial regression of agricultural economic colligated index.