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杉木种子涩籽地理分布的空间插值法研究
引用本文:吴承祯,洪伟,林思祖.杉木种子涩籽地理分布的空间插值法研究[J].热带亚热带植物学报,2004,12(4):318-322.
作者姓名:吴承祯  洪伟  林思祖
作者单位:福建农林大学森林生态研究所,福建,福州,350002
基金项目:中国博士后科研基金,福建省科技厅重大项目(2001F007、2001Z025),福建省自然科学基金(B0110026)资助者
摘    要:应用距离反比插值法进行杉木种子涩籽率的空间插值,并提出一种改进的距离反比插值法(MID),其包含了距离反比法(ID)和距离平方反比法(IDS)。根据福建省25个杉木种子产地的涩籽率观察值,建立了杉木种子涩籽率的改进距离反比插值模型。改进距离反比插值法经交叉验证,其平均误差及平均误差平方的平方根均较距离反比法和距离平方反比法更小,具有较高的精度,平均精度达88.91%,可应用于杉木种子涩籽的空间内插。这不仅为杉木种子涩籽的空间插值提供了一种新方法,而且为地理信息系统(Geographic information system,GIS)辅助的杉木种子涩籽区域分布与流行趋势研究提供了理论依据,为福建省杉木种子园的合理布局与优化奠定基础。

关 键 词:空间插值  距离反比法  杉木  涩籽  地理分布
文章编号:1005-3395(2004)04-0318-05
修稿时间:2003年9月25日

Studies on Interpolation Method for Estimating the Geographical Distribution of Sterile Seeds of Cunninghamia lanceolata
WU Cheng-zhen,HONG Wei,LIN Si-zu.Studies on Interpolation Method for Estimating the Geographical Distribution of Sterile Seeds of Cunninghamia lanceolata[J].Journal of Tropical and Subtropical Botany,2004,12(4):318-322.
Authors:WU Cheng-zhen  HONG Wei  LIN Si-zu
Abstract:The inverse distance method (ID) was used to interpolate the sterile seed rate of Cunninghamia lanceolata distributed in various sites in Fujian Province in order to establish rational seed production bases. A modified inverse distance method (MID) is presented which includes ID and inverse distance squares method (IDS). Based on sterile seeds collected from 25 sites, models of MID, ID and IDS were built. The results of cross-validation for the three methods showed that mean error and root-mean-square interpolation error in MID were lowest, and the average accuracy being 88.91%. MID could be useful in the study of epidemic trend of C. lanceolata sterile seeds and its distribution, as well as for establishing seed production base in optimum habitats.
Keywords:Spatial interpolation  Inverse distance method  Cunninghamia lanceolata  Sterile seeds  GeographicalDistribution
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