Spatial-temporal pattern evolution of agricultural economy of urban agglomeration in the middle reaches of the Yangtze River

By measurement statistics and GIS spatial analysis，the spatial-temporal differences in agricultural economy of urban agglomeration in the middle reaches of the Yangtze River from 2004-2014 were analyzed. The results showed that，during 2004-2014，the absolute difference and relative difference of agricultural economy in the city of the Yangtze River middle reaches urban agglomeration expanded. The development level of agricultural economy was from“ west to east” to“ northwest to southeast gradually reduced stepwise” in space and had a typical “core - periphery” feature. During 2004-2014，agricultural economy in all regions of space gap was narrowing overall. The level of development was from the“ less developed” and“ underdeveloped” area-based，which like oliveshape structural to overall balance of transition. The regional differences of agricultural economy spatial agglomeration were significant and gradually stabilized；the spatial pattern of performance was characterized by“ the west HH to the east LL agglomeration”，and gradually evolved into“ from northeast HH to southwest LL agglomeration”. HH spatial agglomeration characteristics were mainly distributed in the Northeast，such as Xiangyang，Yichang，Jingmen. LL spatial agglomeration characteristics were mainly concentrated in the Southeast，such as Shangrao，Nanchang， Jingdezhen. Agricultural machinery power and arable land were inherent natural factors，which influenced the development of agricultural economy. The per capita GDP，investment intensity and population density were external promoter，which affected agricultural economic disparities.