Research On Cost-effectiveness Analysis Of Agricultural Adaptation To Climate Change Investment Project

In the report of the 20 th National Congress of the Communist Party of China,it was pointed out: "To build a modern socialist country in an all-round way,the most arduous and arduous task still lies in the rural areas.The "three rural issues" have always been the top priority of the country’s work,and it is a great responsibility to protect food security.The degree of disasters caused by global warming,such as drought,flooding,extreme low temperature freezing,etc.,has intensified,and diseases and pests have become increasingly aggravated.China has a vast territory,with great differences between north and south and east to west,and there are still obvious regional and temporal heterogeneity in actions to adapt to climate change.The decentralized operation model of households and the production model dominated by oil agriculture not only lack the ability to cope with global climate change,but also consume a lot of resources that cause huge pollution to the environment.Therefore,based on the spatial geographical characteristics of China and the actual agricultural production,this paper studies the cost-effectiveness analysis method of agricultural climate change adaptation investment projects,and comprehensively evaluates the impact of climate change adaptation investment projects from three dimensions: economy,society and environment.Through literature,it is found that there are two options for agricultural production to adapt to climate change,one is the optimization and adaptation of changes in natural conditions caused by climate change,such as planting structure adjustment and southto-north water diversion project.The second is the adaptation of low-carbon development models caused by high pollution and high energy consumption oil agriculture,such as developing ecological agriculture,reducing the use of pesticides and fertilizers,and recycling agricultural waste.Combined with the results and technical research of climate change adaptation in China,the corn drip irrigation cultivation technology in the three eastern provinces was selected as the research object,and based on the data change trend of maize planting area and average yield in Northeast China from 2003 to 2021,the environmental cost-effectiveness analysis method studied in this paper was used to analyze and predict the cost and benefit of the next 20 years from six aspects and twelve indicators,so as to provide ideas for the research of investment projects in agriculture adaptation to global climate change in the three northeastern provinces.