Analysis Of Temporal And Spatial Variation Features Of Intensive Utilization Of Arable Farmland In Harbin City

Intensive utilization of arable farmland is the rational allocation of resources through scientific method, to achieve the maximum utilization of cultivated land resources from a limited land resources. It fully exploits the potential of cultivated land use, improves the efficiency of arable land. Ultimately, it achieves the maximum use of cultivated land use and a more sustainable development. Harbin is the capital city of Heilongjiang Province, and it is also the major grain production base in China. Its Intensive utilization of land evaluation which shows the dynamic changes of the time and spatial distribution of differences, which contributes to the degree of intensive arable land, it helps protect the land resources in Harbin. Intensive utilization of land not only ensures the national food security, but also a sustainable use of land resources, and provides a reference for the sustainable development of cultivated land resources.This paper selects an important grain production base in northeast China, on the basis of research intensive use of arable land, analyzes the status quo of the use of arable land resources in Harbin from the perspective of input intensity, the degree of utilization of the intensive use of farmland. It calculates the utilization efficiency, sustainable situation in four areas from the data of 2003-2012 system which based on comprehensive evaluation model. This paper analyses the differences in Harbin area in 2012 using the method of Arc GIS.The results show that:(1) 2003-2012 dynamics intensive utilization of arable land shows an increasing overall trend with an average annual increase of 0.97 percent margin; the degree of utilization shows the state of a first growth and then a reduction, with great the volatility, the average annual increase of 1.35%; the efficiency in the 10 years shows a steady improvement with an average annual growth rate of 2.28% which is a sustained fluctuating upward trend in overall.(2) The fluctuating upward trend in Harbin indicates that the level of intensive use of arable land in this decade is instable, which can be divided into three stages: 2003-2006 intensive use of arable land steadily improving; 2007-2009 intensive use of arable land were fluctuating upward trend; and then a substantial growth in 2010-2012(3) The spatial distribution of arable land in Harbin and its 10 satellite cities shows that the input intensity is higher in Fangzheng and Mulan; Harbin is relatively high in cultivated land use but the relative differences small, of which is a 0.67 higher. The differences are large within the region, Shuangcheng is up to 0.851, Binxian is a minimum of 0.198, a difference of 0.65; From the perspective of sustainability, Yilan, Yanshou and Tonghe is significantly higher than that in other regions(4) Intensive use of arable land in Harbin is the highest, and it is relatively low,in Yilan, Binxian, Mulan and Yanshou, among which Binxian is the lowest in overall. Intensity in northeastern region is relatively high. The intensive use of city’s arable land in space is obvious differences, with GIS-based classification it can be divided into three levels: high-intensive: Yilan, Tonghe, Fangzheng and the Shuangcheng; General Intensive: Harbin, Bayan, Mulan, Yanshou, Wuchang and Shangzhi; No intensive: Binxian, intensive use of such areas is relatively low.