四川省耕地压力与经济发展的时空耦合分析  

Spatial-temporal coupling analysis of cultivated land pressure and economic development in Sichuan Province

作　　者：谢贤健[1] XIE Xianjian(School of Geography and Resource Science,Neijiang Normal University,Neijiang 641000,China)

机构地区：[1]内江师范学院地理与资源科学学院,四川内江641000

出　　处：《甘肃农业大学学报》2023年第6期180-188,共9页Journal of Gansu Agricultural University

基　　金：长江科学院开放研究基金项目(CKWV2017523/KY)。

摘　　要：【目的】保护四川省耕地资源的可持续利用,保障区域内粮食安全,为耕地保护和经济发展政策提供依据。【方法】以四川省为研究对象,基于GIS技术,运用耕地压力指数模型、熵权TOPSIS法、地理集中度、主成分分析等方法,探讨四川省耕地压力的时空分布特征,分析耕地压力和经济发展的耦合关系,并探索影响二者耦合关系的主要因素。【结果】2005~2020年间,四川省耕地压力指数总体上呈减小趋势;从空间分布特征来看,四川省耕地压力等级高的地市随时间推移从11个减少到1个,低压力及以下等级地市由3个增加到18个,粮食安全问题在不同的空间上有所缓解。耕地压力与经济发展密切相关,二者的耦合指数总体上自西北向东南呈递减趋势,耦合类型以耕地压力超前型为主。主成分分析发现,国民生产总值、农村居民家庭人均纯收入、城镇居民家庭人均收入、社会消费品零售总额、年均温、国土面积、粮食单产、年降水量、化肥施用量等9个指标是影响耕地压力与经济发展耦合度的主要指标。【结论】四川省耕地压力指数与经济发展水平间具有明显的耦合特征,应通过科学调整产业结构、倡导合理消费、加大农业投入等手段来协调耕地压力指数与经济协调发展。【Objective】This study aimed to maintain sustainable utilization of cultivated land resources in Sichuan Province and ensure regional food security,providing the basis for cultivated land protection and economic development policies.【Method】With Sichuan Province as research area,various methods includ-ing GIS technology,cultivated land pressure index model,entropy weight TOPSIS method,geographical concentration analysis and principal component analysis were used to examine the temporal and spatial dis-tribution characteristics of cultivated land pressure.Additionally,the coupling relationship between culti-vated land pressure and economic development was analyzed,along with the identification of key factors in-fluencing this relationship.【Result】From 2005 to 2020,the pressure index of cultivated land in Sichuan Province exhibited a decreasing trend.From the perspective of spatial distribution characteristics,the num-ber of cities with high cultivated land pressure decreased from 11 to 1 over time,while the number of cities with low pressure or below increased from 3 to 18,indicating an alleviation of food security concerns in dif-ferent regions.Cultivated land pressure displayed a close association with economic development,with a de-creasing coupling trend observed from northwest to southeast,predominantly characterized as cultivated land pressure advance type.The study identified nine key indicators,including gross national product,per capita net income of rural households,per capita income of urban households,total retail sales of social con-sumer goods,average annual temperature,land area,per unit yield of grain,annual precipitation,and fertil-izer application,as the main factors affecting the coupling degree of cultivated land pressure and economic development.【Conclusion】The research demonstrated a clear coupling of the cultivated land pressure in-dex with the level of economic development in Sichuan Province.To achieve coordinated development,it was recommended to scientifically adjust the i

关 键 词：四川省 耕地压力 经济发展 时空耦合 地理信息系统 

分 类 号：F323.21[经济管理—产业经济] F127