赵哲,博士、硕士生导师,辽宁大学经济学院副教授。主要从事农业经济、资源环境经济与政策等相关研究。入选辽宁省哲学社会科学青年人才培养计划和沈阳市高层次人才。先后在Technological Forecasting and Social Change、Agricultural Economics、《大连理工大学学报(哲学社会科学版)》等期刊上发表学术论文20余篇,出版专著1部,撰写的多份咨政报告得到省部级相关领导肯定性批示。先后主持国家自然科学基金青年项目、辽宁省哲学社会科学规划基金、辽宁省经济社会发展研究课题等国家及省部级课题10项。
作者简介:
张轩畅,博士,中国科学院地理科学与资源研究所助理研究员。国家精准扶贫成效第三方评估总体组骨干。主要从事乡村地域系统演化、土地整治与农业地理工程等方面研究。主持国家自然科学基金青年项目、中国博士后基金面上资助项目,参与国家自然科学基金重大、重点和面上项目、国家重点研发、中国科学院先导A类专项等10余项。在Catena、Science of the Total Environment、Land Degradation & Development等发表学术论文20余篇。
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Driving mechanisms of the spatial-temporal evolution of cultivated land resources in the Black Soil Region of Northeast China and its spatial effects
Understanding the driving mechanisms of the temporal and spatial evolution of cultivated land resources in the Black Soil Region of Northeast China and its spatial effects is important for the protection and utilization of black soil cultivated land. Based on the annual remote sensing data on land use and county-level statistical data of the Black Soil Region of Northeast China from 1990 to 2022, this study uses the Centre of Gravity Migration Model, Transition Matrix Method and Spatial Panel Regression Model to explore the driving mechanisms and spatial effects of the spatial and temporal evolution of cultivated land resources in the region. The results indicate that The total area of cultivated land resources in the Black Soil Region of Northeast China has shown a M-shaped upward trend with cumulative growth of 1 067 700 hm2 (representing a growth rate of 2.39%) since 1990, among which, the centre of gravity of cultivated land in the northeast black soil region has continuously shifted towards the northeast. Regions with increased cultivated land resources are primarily located in the Greater Khingan Mountains, the Lesser Khingan Mountains, the Sanjiang Plain and the Changbai Mountain region, while regions with decreased cultivated land resources are primarily located in the Liaohe Plain and Songnen Plain. Additionally, changes in cultivated land resources are positively impacted by annual precipitation, industrial structure, and black soil protection policies, while average annual temperature, slope, night-time light index, and total agricultural machinery power have a negative impact. Socio-economic factors have a significant spatial spillover effect on cultivated land in neighbouring counties. Among these factors, per capita GDP, industrial structure and black soil protection policies have a positive effect; meanwhile, the night light index and total agricultural machinery power have a negative effect. Based on this, the study puts forward three policy recommendations as follows: timely adjustment of regional crop structures, accelerated construction of high-standard cultivated land, and strengthened policy guidance on black soil protection.
赵哲,博士、硕士生导师,辽宁大学经济学院副教授。主要从事农业经济、资源环境经济与政策等相关研究。入选辽宁省哲学社会科学青年人才培养计划和沈阳市高层次人才。先后在Technological Forecasting and Social Change、Agricultural Economics、《大连理工大学学报(哲学社会科学版)》等期刊上发表学术论文20余篇,出版专著1部,撰写的多份咨政报告得到省部级相关领导肯定性批示。先后主持国家自然科学基金青年项目、辽宁省哲学社会科学规划基金、辽宁省经济社会发展研究课题等国家及省部级课题10项。
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赵哲,博士、硕士生导师,辽宁大学经济学院副教授。主要从事农业经济、资源环境经济与政策等相关研究。入选辽宁省哲学社会科学青年人才培养计划和沈阳市高层次人才。先后在Technological Forecasting and Social Change、Agricultural Economics、《大连理工大学学报(哲学社会科学版)》等期刊上发表学术论文20余篇,出版专著1部,撰写的多份咨政报告得到省部级相关领导肯定性批示。先后主持国家自然科学基金青年项目、辽宁省哲学社会科学规划基金、辽宁省经济社会发展研究课题等国家及省部级课题10项。
张轩畅,博士,中国科学院地理科学与资源研究所助理研究员。国家精准扶贫成效第三方评估总体组骨干。主要从事乡村地域系统演化、土地整治与农业地理工程等方面研究。主持国家自然科学基金青年项目、中国博士后基金面上资助项目,参与国家自然科学基金重大、重点和面上项目、国家重点研发、中国科学院先导A类专项等10余项。在Catena、Science of the Total Environment、Land Degradation & Development等发表学术论文20余篇。
"}, bioImg=uV8gxEmRtokWYNx1vwXoAA==, bioContent=
张轩畅,博士,中国科学院地理科学与资源研究所助理研究员。国家精准扶贫成效第三方评估总体组骨干。主要从事乡村地域系统演化、土地整治与农业地理工程等方面研究。主持国家自然科学基金青年项目、中国博士后基金面上资助项目,参与国家自然科学基金重大、重点和面上项目、国家重点研发、中国科学院先导A类专项等10余项。在Catena、Science of the Total Environment、Land Degradation & Development等发表学术论文20余篇。
式中:Yit 和Xit 分别为被解释变量和解释变量的观测值;β0为常数项;ρ和γ分别为被解释变量和解释变量的空间回归系数;β为解释变量的回归系数;α为个体效应(具体根据后文检验结果确定固定效应或随机效应);λ为空间误差系数;ε为随机误差项; W 为空间权重矩阵,具体通过构建空间反距离矩阵将空间单元相互关系进行量化。
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