The Low-Lying Land Of The Yellow River Kaifeng Section Based On Land Use Change Study On Carbon Emission Mearsurement And Simulation

As the birthplace of China's important agricultural civilization,maintaining the carbon balance of the Yellow River Basin plays an important role in the sustainable development of regional green and low carbon.The low-lying land of the Yellow River?Kaifeng section?is an important reserve area for cultivated land in Henan Province and a key area for the construction of grain production capacity.In the current situation of increasing population and reduced cultivated land,unreasonable regional land use not only causes waste of resources,but also has an important impact on the overall carbon environment of the region,which has caused great damage to the future sustainable development of the region.Therefore,this study uses the carbon emissions of the land use in the backwaters of the the low-lying land of the Yellow River?Kaifeng section?as the research object,useing carbon emission coefficient,CASA,carbon footprint,carbon bearing capacity,multiple land use dynamic and linear programming modeland estimates the land use carbon emissions in the low-lying land of the Yellow River?Kaifeng section?in 1990,2001,2008 and 2016.The estimates include Maintain land use carbon emissions,transfer land use carbon emissions,land use net carbon revenue and expenditure and future regional land use carbon emissions optimization.Based on the assessment of regional land use carbon emissions,it will provide countermeasures and suggestions for future land development from the perspective of carbon emissions in the backwaters of the low-lying land of the Yellow River?Kaifeng section?to promote regional low-carbon economic construction and sustainable development.The conclusions are as follows:?1?From 1990 to 2016,the net carbon emissions of land use in the low-lying land of the Yellow River?Kaifeng section?showed an increasing trend year by year.The carbon emissions of different land use types varied greatly.The average annual increase rate of carbon emissions of construction land was 31.31%.Therefore,the expansion of construction land was the main reason for the increase of net carbon emissions of land use in Beihewa area?Kaifeng section?.?2?The carbon intensity of land use in the low-lying land of the low-lying land of the Yellow River?Kaifeng section?increased from 41.60t/km² in 1990 to 513.70 in 2016.t/km^2;During the study period,the carbon footprint increased by 15.21hm²,with an average annual increase of 2.64%;in 2016,the carbon emission capacity of the the low-lying land of the Yellow River?Kaifeng section?increased to 12.15,indicating that the regional environment was disturbed by humans,and the carbon of regional ecosystems The emission capacity was far greater than the carbon absorption capacity,and the pressure of the ecosystem carbon cycle was relatively high.?3?During the study period,the net carbon emission change in thelow-lying land of the the low-lying land of the Yellow River?Kaifeng section?was 626,855.22 tons,and the carbon emission change of the retained land type is 173,831.88 tons.The carbon emission change of land use type conversion is 453,019.56 tons;the carbon source change in the low-lying land of the Yellow River?Kaifeng section?was 684,682.69 tons,the carbon sink change is57,827.47 tons,and the carbon sink can offset 8.45%of the carbon source.The carbon emission rate of land type conversion is 66.17%,so the land conversion process is the main reason for the increase of carbon emissions.?4?The total carbon emissions in the low-lying land of the Yellow River?Kaifeng section?of 2020,2030 and 2040 are 86.90 respectively.10,000 tons,865,100 tons,862,300 tons.The total amount of carbon absorption is increasing year by year,and the increasing crop yield and the reduction of pesticide and fertilizer input are the main reasons for the increase of carbon uptake in cultivated land.In terms of land use structure optimization from the perspective of carbon emissions,the increase in ecological land use and the reduction in carbon emissions per unit area are the main reasons for the decline of future carbon emissions in the region.