山区耕地利用碳排放与粮食安全的耦合协调研究  

Study on the coupling and coordination of carbon emissions from cultivated land use and food security in mountainous areas

作　　者：陈波 刘芮羽 高明英 CHEN Bo;LIU Ruiyu;GAO Mingying(College of Public Administration,Guizhou University of Finance and Economics,Guiyang,Guizhou 550025,China)

机构地区：[1]贵州财经大学公共管理学院,贵州贵阳550025

出　　处：《贵州师范大学学报（自然科学版）》2024年第5期106-116,共11页Journal of Guizhou Normal University：Natural Sciences

基　　金：国家自然科学基金项目(41807366);贵州省科技计划项目(黔科合基础[2020]1Y190);贵州省教育厅高等学校自然科学研究项目(黔教技[2024]83号)。

摘　　要：为探究山区耕地利用过程中实现减排增汇与保障粮食安全权衡/协同的发展,以典型喀斯特地貌分布的贵州省为研究区,构建山区耕地利用碳排放量评估的方法体系,测算2010—2022年贵州省耕地利用碳排放效率和粮食安全水平,并利用耦合协调度模型阐明碳排放效率与粮食安全的关系与时空演变特征。结果表明:1)近13年来贵州省耕地利用碳排放量呈“西高东低、北高南低”,先升后降趋势,化肥使用产生的碳排是耕地利用过程中碳排放的主要来源之一,也是山区耕地碳减排的关键。2)2010—2022年贵州省耕地利用碳排放效率呈先下降再上升趋势,总体水平不高,各市(州)差异明显,呈西北高、东南低的特征。3)2010—2022年贵州省粮食安全水平均值从0.510上升至0.537,呈“下降—上升”趋势,处于临界安全级别,空间上呈北高、南低的特征。4)2010—2022年贵州省耕地利用碳排放效率与粮食安全的耦合协调度总体由“勉强协调”向“初级协调”发展,各市(州)耦合协调度均有提升,但北部明显高于南部。建议贵州省结合山区耕地特点,深化农业产业结构,大力推广先进绿色的耕种技术,实现耕地利用碳减排和粮食安全的协调可持续发展。In order to explore the development of trade-off/synergy between carbon emission reduction and carbon sequestration and food security protection in the process of cultivated land utilisation in mountainous areas,we take Guizhou Province,where typical karst landscapes are distributed,was taken as the study area,to construct a methodological system for assessing the carbon emission of cultivated land utilisation in mountainous areas,calculate the carbon emission efficiency and food security level of cultivated land utilization from 2010 to 2022,and clarify the relationship between carbon emission efficiency and food security as well as the characteristics of spatio-temporal evolution using the coupling coordination degree model.The results of the study showed that:1)Over the past 13 years,the spatiotemporal variation carbon emissions from cultivated land in Guizhou Province have shown a pattern of“high in the west and low in the east,high in the north and low in the south”,with a trend of first increasing and then decreasing.Chemical fertilizers were one of the main sources of carbon emissions from cultivated land and are also the key to the reduction of carbon emissions from cultivated land in mountainous areas.2)From 2010 to 2022,the carbon emission efficiency of cultivated land use in Guizhou Province showed a decreasing and then increasing trend,with an overall low level.There were significant differences among cities(states),showing the characteristics of high in the northwest and low in the southeast.3)From 2010 to 2022,the average level of food security in Guizhou Province increased from 0.510 to 0.537,showing a trend of"decline-rise",which is at a critical level of safety.Spatially,it is characterized by high in the north and low in the south.4)From 2010 to 2022,the coupling coordination degree between the carbon emission efficiency of cultivated land utilization and food security in Guizhou Province developed from"barely coordinated"to"primary coordinated"on the whole.The coupling coordination degree o

关 键 词：山区耕地 碳排放效率 粮食安全 耦合协调 贵州省 

分 类 号：X322[环境科学与工程—环境工程] F326.11[经济管理—产业经济]