Study On Benefit Evaluation Of Cultivated Land Utilization In Inner Mongolia

Farmland is the foundation of Agriculture,China as a traditional agricultural country,how to reasonable use has important significance for the protection of national food security and social long period of stability and maintaining ecological balance of cultivated land.The best embodiment of the rational use of arable land is the level of the efficiency of cultivated land use,which is an important indicator to measure the productivity of cultivated land and the sustainable development of agriculture.However,with the impact of social and economic reform since the reform and opening up,the important position of agriculture is reduced slowly,especially the construction of industrialization development and new urbanization,the non-agricultural use of land resources has become the social development and social progress in the universal phenomenon.Although our country has implemented the most stringent farmland protection system,but its implementation results and expected a larger deviation,not only in the quality of China's arable land decreased significantly,the number is reduced,the per capita arable land is only 1.43 acres,less than 40% of the world level.Inner Mongolia is one of the most important grain producing areas in China,and it is very important to utilize and protect the cultivated land resources.The cultivated area is larger in the autonomous region,but more than 70% of the cultivated land is in the middle and low yield field,and the quality is poor.Although the amount of organic fertilizer application showed a downward trend,but the increasing application of chemical fertilizer,coupled with the industrial wastes emissions,resulting in deterioration of the soil structure,the quality of arable land decreased.In recent years,with Inner Mongolia new urbanization,the rapid development of social economy and urban scale expanding,the protection of farmland resources resulted in greater pressure,these factors determine the mining land potential must do implement to improve land use efficiency of development.This paper is based on the basis of previous studies,in Inner Mongolia and 12 cities for the benefit evaluation of land use in the unit,land value theory,land scarcity theory,agricultural location theory,sustainable development theory,through the analysis of the dynamic changes of effective utilization of cultivated land resources in Inner Mongolia in recent 20 years,the construction of evaluation index system of selecting cultivated land use benefit of 18 indexes from three aspects of economy,society and ecology,using the optimal combination weighting method to determine the index weight,using multi factor comprehensive evaluation method evaluation of cultivated land in Inner Mongolia from 1995 to 2014 and 12 Union City utilizationlevel,benefit from the regionaldifferences of characteristics of cultivated land use in Inner Mongolia in four aspects of economic,social and ecological benefits and comprehensive benefits,finally put forward to improve the cultivation of Inner Mongolia Countermeasures of land use efficiency.The results show that:(1)The overall upward trend of the comprehensive benefits of 20 years of cultivated land in Inner Mongolia,roughly divided into two phases: 1995-2002 value decreased slowly,in 1995 reached the lowest level in 20 years;2003-2014 years,the overall efficiency of the upward trend in volatility,in 2003 than in 2002 have decreased greatly.This year due to serious natural disasters,Inner Mongolia land use economic,social and ecological benefits were sharply decreased,resulting in the decrease of comprehensive benefits: 2003-2014 years,in a significant increase since 2003,Inner Mongolia land use comprehensive benefit of the strong upward momentum,volatility has increased significantly,the evaluation value reached in 2014 the maximum value of107.5.In the analysis of the 20 years of data,in addition to 1995 can not be compared,there are 11 years of comprehensive utilization of arable land increased relative to the previous year,accounting for more than the comparable year of 55%.(2)The definition of comprehensive benefit of cultivated land use in the Inner Mongolia Autonomous Region into four categories: the four main city of Hohhot City,Baotou City,Bayannaoer City,Erdos first class area,accounting for 33.33% of the total area of Inner Mongolia;the second category are Hulun Buir City,Tongliao City,Chifeng City,Xingan Meng four areas,accounting for 33.33% of the total area of Inner Mongolia.third including Xilingol,Wulanchabu,accounting for 16.67% of the total area of Inner Mongolia;the fourth category includes two Wuhai City,Alashan,the Inner Mongolia Autonomous Region accounted for 16.67% of the total area.Combined with the study area of cultivated land use efficiency evaluation results,respectively,from improving the hazard ability of major grain producing areas to resist,strengthening land regulation and environmental protection,strictly implement the balance of arable land policy,perfecting the compensation mechanism of cultivated land protection,promote the overall development of the five aspects to improve the efficiency of the proposed land rehabilitation countermeasures.