摘要
科学剖析农业生态效率时空演化及影响机制,对实现农业可持续发展以及制定相关政策具有重要的理论与实践意义。以广义农业为研究对象,采用super-SBM模型测算了1995—2019年河南省104个区县农业生态效率,采用空间杜宾模型探讨影响因素的溢出效应,采用地理探测器对其空间分层异质性进行分析。结果表明:(1)河南省农业生态效率呈阶梯型震荡下降趋势变化,空间上呈现出集聚性和异质性。(2)农民收入水平、劳均播种面积和种植结构对该地区农业生态效率具有显著正向直接效应;城镇化率和农业机械密度对该地区农业生态效率具有显著负向直接效应;农民收入水平对邻接地区农业生态效率具有显著正向空间溢出效应;城镇化率、化肥使用强度和农业机械密度对邻接地区农业生态效率具有显著负向空间溢出效应。(3)农业生态效率的高作用影响因素由农业资源要素向社会经济要素转变,且交互作用项的影响大于单一变量的影响。基于此,建议制定农业政策时应充分考虑农业生态效率空间溢出效应和空间异质性,加强区域间资源要素的交流与协作,并结合自身禀赋发展特色农业。
Scientific analysis of the temporal and spatial evolution and impact mechanism of agricultural eco⁃efficiency has important theoretical and practical significance for achieving sustainable agricultural development and formulating related policies.Taking generalized agriculture as the research object,the super⁃SBM model was used to measure the agricultural eco⁃efficiency of 104 districts and counties in Henan Province from 1995 to 2019.The Spatial Durbin Model was used to explore the spillover effects of influencing factors,and the geographic detector was used to analyze its spatial stratification heterogeneity.The results reveal that:(1)The agricultural eco⁃efficiency of Henan Province showed a step⁃shaped oscilla⁃ting downward change trend,and spatially showed agglomeration and heterogeneity.(2)Farmers′income level,per capita sown area and planting structure have a positive and direct effects on the agricultural eco⁃efficiency of the region;the ur⁃banization rate and agricultural machinery density have a negative direct effects on the agricultural eco⁃efficiency of the re⁃gion;Farmers′income level has a significant positive spatial spillover effect on agricultural eco⁃efficiency in adjacent are⁃as;urbanization rate,fertilizer use intensity and agricultural machinery density have negative spatial spillover effects on agricultural eco⁃efficiency in adjacent areas.(3)The highly influential factors of agricultural eco⁃efficiency have been transformed from agricultural resource factors to social and economic factors,and the influence of interaction term is greater than that of a single variable.Based on the given research results,it is suggested that agricultural policies should be formu⁃lated with pragmatic attention of the spatial spillover effect and spatial heterogeneity of agricultural eco⁃efficiency,the ex⁃change and collaboration of resource factors between regions should be strengthened,and characteristic agriculture should be developed with their endowments.
作者
闫明涛
乔家君
瞿萌
韩冬
YAN Ming-tao;QIAO Jia-jun;QU Meng;HAN Dong(College of Geography and Environmental Science,Henan University/Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions,Ministry of Education,Kaifeng 475004,China)
出处
《生态与农村环境学报》
CAS
CSCD
北大核心
2022年第11期1396-1405,共10页
Journal of Ecology and Rural Environment
基金
国家自然科学基金(42071220)
中国博士后科学基金(2021M701053)。
