杉木种子涩籽地理分布的空间插值法研究  

Studies on Interpolation Method for Estimating the Geographical Distribution of Sterile Seeds of Cunninghamia lanceolata

作　　者：吴承祯[1] 洪伟[1] 林思祖[1] 

机构地区：[1]福建农林大学森林生态研究所,福建福州350002

出　　处：《热带亚热带植物学报》2004年第4期318-322,共5页Journal of Tropical and Subtropical Botany

基　　金：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(Geographicinformationsystem,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。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.

关 键 词：空间插值 距离反比法 杉木 涩籽 地理分布 

分 类 号：S722.11[农业科学—林木遗传育种]