Research on Spatial-Temporal Difference of Pesticides and Fertilizers Inputs in Farmland at County Level in Jiangxi Province

摘要

本文在ArcGIS软件的支持下,以单位面积农田农药化肥投入量为测度指标,从分布格局、投入水平格局、增长速度格局等方面对2000-2010年江西省单位面积农田农药化肥投入量的时空差异进行了研究.结果表明:江西省各县域在单位面积农田农药化肥投入量上存在着两极分化的现象,高投入区重心由赣北转移到了赣南；中高及高投入区集聚状况呈现“核心”与“边缘”分布特征；东西差异逐步减小；从农药化肥投入量的增长格局上看,增速较快的县域主要分布在赣中和赣南,增速较慢的县域则主要分布在赣北和赣中.%With the aid of ArcGIS,the study is measured by the index of pesticides and fertilizers inputs in unit area of farmland.Spatial-temporal differences of pesticides and fertilizers inputs in unit area of farmland in Jiangxi Province during 2000-2010 are preliminarily explored from three aspects:the distribution pattern,the input level pattern and the growth rate pattern.The following conclusions are made:the polarization phenomenon of pesticides and fertilizers inputs existed in Jiangxi Province.The center of gravity of high input area transferred from the north to the south.The agglomeration of high input areas showed the distribution characteristics of "core" and "edge".At the same time,the disparity between the east and the west decreased gradually.Concerning the growth pattern of pesticides and fertilizers inputs,the counties which increased rapidly were mainly distributed in the middle and south of Jiangxi Province.On the contrary,the counties which increased slowly were mainly distributed in the north and middle of Jiangxi Province.