检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:张樨樨 韩丽颖 曹正旭 ZHANG Xixi;HAN Liying;CAO Zhengxu(School of Economics and Management,China University of Petroleum(East China),Qingdao 266580,China;Institute for Digital Transformation,Qingdao266580,China;Management College,Ocean University of China,Qingdao 266100,China)
机构地区:[1]中国石油大学(华东)经济管理学院,山东青岛266580 [2]数字化转型研究中心,山东青岛266580 [3]中国海洋大学管理学院,山东青岛266100
出 处:《地域研究与开发》2023年第6期157-164,共8页Areal Research and Development
基 金:国家社会科学基金后期资助项目(21FGLB021)。
摘 要:选取2010—2020年黄河三角洲高效生态经济区19个县域单元相关数据,采用非期望SBM模型测算生态效率,并借助核密度估计和聚类分析等方法考察区域生态效率的时空演变特征,在此基础上运用Tobit模型探讨生态效率驱动因素。结果表明:黄河三角洲高效生态经济区整体生态效率以2016年为分水岭,前期保持平稳,后期因新旧动能转换不畅问题而出现下降,经调整后开始回升。县域间生态效率差异明显,呈现高值区与低值区交叉分布的“川”字型空间格局,19个县域可依据生态效率变动情况分为4类,其中中低位县域波动更为显著。对区域整体而言,科技创新水平、环境治理能力与基础设施保障程度促进生态效率提升,产业结构与对外开放程度具有抑制作用,城镇化水平对生态效率变动影响不显著,生态效率关键驱动因素在时空上均存在异质性。Based on the data of 19 counties in the Yellow River Delta high-efficiency eco-economic zone from 2010 to 2020,the unexpected SBM model is used to measure the ecological efficiency,and the temporal and spatial evolution characteristics of regional ecological efficiency are investigated by means of kernel density estimation and cluster analysis.On this basis,Tobit model is used to explore the driving factors of ecological efficiency.The results show that:The overall ecological efficiency of the Yellow River Delta high-efficiency eco-economic zone takes 2016 as the watershed,which remained stable in the early stage,and declined in the later stage due to the poor conversion of old and new kinetic energy,and begin to pick up after adjustment.There are obvious differences in ecological efficiency among cities,showing a“Chuan”spatial pattern of cross distribution of high-value areas and low-value areas.Nineteen counties can be divided into four categories according to the change of ecological efficiency,among which the fluctuation of middle and low-level cities is more obvious.As far as the whole region is concerned,the level of scientific and technological innovation,the ability of environmental governance and the degree of infrastructure guarantee promote the improvement of ecological efficiency,while the industrial structure and the degree of opening to the outside world have a restraining effect.The level of urbanization has no significant influence on the change of ecological efficiency,and the key drivers of ecological efficiency are heterogeneous in time and space.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.171