Study On The Relationship Between Intensive Use Of Cultivated Land And Carbon Emissions In Shaanxi

The global carbon emission reduction situation is severe.The intensive use of cultivated land has also brought about certain externalities while improving the output and production efficiency of agricultural products.The production factors such as chemical fertilizers and pesticides invested in intensive use,energy generated by machinery such as electricity and fossil energy.The combination of consumption and arable land use activities has led to a rapid increase in carbon dioxide emissions.In recent years,China's grain output has experienced rapid growth,but high growth is often at the expense of high carbon emissions from high input of agricultural production materials.Therefore,it is necessary to explore the relationship between intensive use of cultivated land and carbon emissions,and coordinate agricultural development and environmental protection.There are few studies on the relationship between intensive use of cultivated land and carbon emissions in China and beyond.This thesis provides a tentative exploration of the relationship based on theories of sustainable development low-carbon economy.Taking Shaanxi Province as an example,this thesis uses ANP,a network analysis method to determine the weight definition of the cultivated land intensive use evaluation index system,quantitatively evaluate the intensive use level of cultivated land,and use GlS technology to analyze the spatial pattern change of cultivated land intensive use.In this paper,agricultural carbon emissions in demonstration areas in the province are measured by building a model of land use and carbon emission to analyze the spatial distribution characteristics between 1996 and 2015.This thesis also analyse the relationship of intensive use level and carbon emissions and their spatial distribution relationship.The conclusions are as follows:(1)From 1996 to 2015,the intensive use level of cultivated land in Shaanxi Province increased significantly by 72.19%;the difference in intensive use of cultivated land between cities was obvious,with the Yangling demonstration area was the highest and the Yulin city was the lowest;as for spatial distribution,showed the Guanzhong Plain in Shaanxi.The intensive use of cultivated land is relatively high,and the intensive utilization of cultivated land in the southern Qinba mountainous area and the northwestern Shaanxi plateau is low.Guanzhong Plain shows high level of intensive use while the Qinba mountainous area in south Shaanxi and the plateau area in north Shaanxi shows relative low level.(2)The total amount of agricultural carbon emissions increased first and then decreased,but the growth rate and trend between regions were quite different.Agricultural carbon emission in Shaanxi Province continues to increase,and its spatial distribution issimilar to that of intensive use of cultivated land,that is highest carbon footprint in Guanzhong Plain especially three the most advanced areas including Xianyang,Weinan and Yangling Demonstration Zone,while relative low level in Guanzhong Plain,Qinba mountainous area in south Shaanxi and the plateau area in north Shaanxi.(3)There is a stable,long-term equilibrium relationship between the intensive utilization level of cultivated land and carbon emission intensity in Shaanxi Province.The relationship is in line with the inverted "U" shape of the Environmental Kuznets curve,with a theoretical inflection point.(4)The Moran's I index of carbon emission intensive and intensity of cultivated land use showed a trend of increasing first and then decreasing,that is,the degree of spatial agglomeration first increased and then decreased;the relationship between the two showed positive correlation,but over time,the degree of positive correlation began to decrease,which means the spatial correlation decreased.