象山港大型底栖动物生产力空间插值及模型比较  

Comparison on the models for spatial interpolation of the productivity of macrozoobenthos in Xiangshan Bay

作　　者：张梦笛 吕粼 金狄狄 林霞[1,2] 朱艺峰[1,2,3] 

机构地区：[1]宁波大学海洋学院,宁波315211 [2]宁波大学应用海洋生物技术教育部重点实验室,宁波315211 [3]宁波海洋研究院,宁波315832

出　　处：《生态科学》2017年第4期21-29,共9页Ecological Science

基　　金：海洋公益性行业科研专项(201105009-3);国家科技支撑项目(2011BAD13B08);浙江省新苗人才项目(2014R405047);宁波大学水产养殖浙江省重中之重一级学科开放基金资助(421500052)

摘　　要：利用普通克里格插值方法的4种半变异函数模型(球形、环形、指数以及高斯模型),对象山港35个站位大型底栖动物年平均生产力进行空间插值,采用平均误差(ME)、标准化平均误差(MSE)、平均标准误差(ASE)、均方根误差(RMSE)、标准均方根误差(RMSSE)对插值结果进行比较,分析不同模型对插值结果的影响。模型交叉验证结果表明,球形模型的预测准确度最高,其RMSSE为1.002,最接近于1,且ME与MSE接近于0;环形模型次之,高斯模型与指数模型略差。插值结果显示,象山港大型底栖动物生产力平均值为4.72 g(AFDM)·m^(–2)·a^(–1),最高值在铁港区,为28.47 g(AFDM)·m^(–2)·a^(–1)。三个次级港湾中,铁港、黄墩港及西沪港的平均次级生产力值分别为5.63、17.18、8.27 g(AFDM)·m^(–2)·a^(–1)。象山港主要经济种菲律宾蛤仔(Ruditapes philippinarum)的生产力最高值在黄墩港,为14.56 g(AFDM)·m^(–2)·a^(–1);毛蚶(Scapharca subcrenata)生产力最高值在铁港,为1.51 g(AFDM)·m^(–2)·a^(–1)。Based on the datasets of annual productivity of 35 stations in Xiangshan Bay, different spatial interpolation models of Ordinary Kriging, i.e., models of spherical, circular, exponential and Gaussian, were conducted to analyze the spatial variation of annual productivity of macrozoobenthos in Xiangshan Bay. In order to quantify the effects of different models on spatial variation of the annual productivity, the interpolation results were compared by the mean error（ME）, the mean standardized error（MSE）, the average standard error（ASE）, the root mean square error（RMSE）, the root mean square standardized error（RMSSE）. The cross validation results showed that the spherical model had the highest forecast accuracy, following by circular, Gaussian and exponential models. The RMSSE of the spherical model was 1.002 which was closed to 1 proximally, meanwhile the ME and MES of spherical model were closed to 0. The spatial interpolation results showed that the average productivity of macrozoobenthos in Xiangshan Bay was 4.72 g（AFDM）· m^（–2）·a^（–1）, and the highest productivity was 28.47 g（AFDM）· m^（–2）·a^（–1） in Tie Bay. The average productivities in the Tie Bay, Huangdun Bay and Xihu Bay were 5.63, 17.18 and 8.27 g（AFDM）· m^（–2）·a^（–1） respectively. The highest productivity of one of the economic species Ruditapes philippinarum was 14.56 g（AFDM）· m^（–2）·a^（–1） in Huangdun Bay. And another economic species Scapharca subcrenata had the highest productivity in Tie Bay which was 1.51 g（AFDM）· m^（–2）·a^（–1）.

关 键 词：象山港 大型底栖动物 生产力 地统计学 

分 类 号：Q15[生物学—普通生物学] Q178.53