摘要
农业污染空间分布广、分散排放、难以监测的特点使得农业污染治理与防范成为各国政府亟待解决的课题。本文以农药投入作为农业污染排放的主要指标,采用空间面板模型考察中国农业环境的库茨涅茨(EKC)曲线特征及空间效应。研究发现:中国农业环境库茨涅茨曲线在中国基本得到支持,但不同区域的库茨涅茨曲线转折点和所处阶段各异。中西部的拐点值要高于东部地区,东部地区已经逼近拐点值,有可能是最早步入农业污染排放由升到降阶段的地区。农业环境空间溢出效应明显,由于地区之间的污染倾销和政府间环境政策"邻里仿效"使得我国农业污染排放呈现空间集聚特征。农业环境的空间溢出效应明显,溢出强度随地理距离的增加而衰减,且不同区域农业环境溢出的地理边界存在差异。构建环境友好型农业技术与推广体系,缩小城乡收入差距、提高财政支农效率及加强区域农业环境合作等方面对于改善我国农业环境质量具有重要作用。
The interceptive characteristics of agricultural pollution makes the agricultural non-point source pollution has become a global common concern and urgent problem. The paper makes use of pes- ticide input as the main indicators of agricultural pollution and uses the spatial panel model to analyze the agricultural EKC curve characteristics and spatial effect. The results indicate that the agricultural EKC hypothesis in China has basically been supported, but the heterogeneity of environmental technol- ogy makes the regional agricultural EKC turning point and stage different. The break point of West and middle region is higher than that of the eastern region which has been approaching the break point. The spatial spillover of agricultural environment is apparent. Due to the pollution dumping and envi- ronmental policy imitation make the agricultural pollution emissions has the characteristics of spatialagglomeration. The spatial spillover of agricultural environment is apparent. The spillover intensity decays with the increasing geographical distance. The spillover modes and spatial boundaries under the different environmental technologies are different. The construction of environment-friendly agricultural technology extension system, narrowing the income gap between urban and rural areas, improving the efficiency of financial agriculture support and the strengthening of regional agricultural environmental cooperation plays an important role in improving the efficiency of China＇s agricultural environment.
出处
《数理统计与管理》
CSSCI
北大核心
2016年第4期614-622,共9页
Journal of Applied Statistics and Management
基金
国家自然科学基金国家自然科学基金(71003023
71373169)
关键词
农业环境
空间溢出
EKC曲线
agricultural environmental, spatial spillover, EKC curve
