气候变化领域集成服务门户(CCPortal): Analysis of Interactions among Greenhouse Gas Emissions, Carbon Sinks, and Food Security in China's Agricultural Systems

CCPortal

DOI	10.3390/agriculture14050703
	Analysis of Interactions among Greenhouse Gas Emissions, Carbon Sinks, and Food Security in China's Agricultural Systems
	Yang, Wenjie; Mo, Xiaoyun
发表日期	2024
EISSN	2077-0472
起始页码	14
结束页码	5
卷号	14 期号:5
英文摘要	Reducing greenhouse gas (GHG) emissions and increasing the size of carbon sinks are closely related to food security in agricultural systems. This study conducted an in-depth data analysis of previous studies to explore the dynamic causal relationships among the reduction of emissions, carbon sink increases, and food security in agricultural systems. The fixed-effect regression model, causality tests, PVAR model, impulse response functions, and variance decomposition were used to explore correlations among the three variables. The results show that the national average carbon sinks surged from 2662.194 Mg in 2000 to 4010.613 Mg in 2020, with the food security index concurrently climbing from 0.198 to 0.308. Moreover, GHG emissions exhibited a negative growth rate from 2016 onwards, yet the 2020 mean remained 142.625 Mg above the 2000 baseline. The agricultural three subsidies reform has not directly promoted food security, but significantly inhibited GHG emissions. However, conflicts exist between emissions reduction and carbon sinks increase in agricultural systems and food security. At the whole level, changes in carbon sinks only have a positive effect on the increase in GHG emissions, whereas changes in GHG emissions have a positive effect on both carbon sinks and food security. Changes in food security strongly inhibit the increase in carbon sinks. This relationship varies among distinct grain functional zones. Policy objectives should be coordinated, target thresholds set, and policies classified according to different functional orientations, to achieve a win-win situation for food supply and low-carbon development.
英文关键词	GHG emissions; carbon sinks; food security; panel vector autoregression model; agricultural system
语种	英语
WOS研究方向	Agriculture
WOS类目	Agronomy
WOS记录号	WOS:001235688900001
来源期刊	AGRICULTURE-BASEL
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/299093
推荐引用方式 GB/T 7714	Yang, Wenjie,Mo, Xiaoyun. Analysis of Interactions among Greenhouse Gas Emissions, Carbon Sinks, and Food Security in China's Agricultural Systems[J],2024,14(5).
APA	Yang, Wenjie,&Mo, Xiaoyun.(2024).Analysis of Interactions among Greenhouse Gas Emissions, Carbon Sinks, and Food Security in China's Agricultural Systems.AGRICULTURE-BASEL,14(5).
MLA	Yang, Wenjie,et al."Analysis of Interactions among Greenhouse Gas Emissions, Carbon Sinks, and Food Security in China's Agricultural Systems".AGRICULTURE-BASEL 14.5(2024).