曲靖烤烟主要化学成分及其协调性空间分布

Spatial patterns of main chemical components and their harmony in flue-cured tobacco in Qujing of Yunnan Province,Southwest China.

利用GIS和地统计学方法,对曲靖烟区烤烟8个主要化学指标空间分布特征进行了分析;然后采用模糊综合评价法对烤烟化学成分协调性进行综合评价;最后基于地统计学原理,借助ArcGIS9.3软件中的反距离权重插值法(IDW)绘制曲靖烤烟化学成分协调性综合评价图。结果表明,曲靖烟区烤烟8项化学指标具有中等的空间自相关性,表现为明显的各向异性分布;烤烟化学成分协调性为优的区域占研究区域总面积的1.82%,为良的区域占54.30%,为一般的区域占41.39%,为中等的区域占2.49%,为差的区域空缺。

By using GIS technique and the methods of geo-statistics,this paper analyzed the special patterns of 8 main chemical indices of flue-cured tobacco in Qujing.The membership function models of the 8 indices were constructed by using fuzzy mathematical theory,and the chemical components harmony was evaluated based on these models.Meanwhile,the spatial distribution characteristics of tobacco chemical components harmony index（CHI） were investigated based on geo-statistics,and a spatial distribution map of the tobacco chemical components harmony was created with an inverse distance weighting（IDW） interpolation method.The 8 tobacco chemical indices were of moderate spatial autocorrelation,and the anisotropic structure varied noticeably.In the flue-cured tobacco planting areas in Qujin,the area of ＇excellent＇,＇very good＇,＇good＇,＇acceptable＇,and ＇poor＇ grades in CHI accounted for 1.82%,54.30%,41.39%,2.49% and null of the total area,respectively.