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应用生态学报 ›› 2004, Vol. ›› Issue (4): 683-686.

• 研究论文 • 上一篇    下一篇

东海区底层及近底层鱼类资源的空间异质性

苏奋振1, 周成虎1, 史文中2, 杜云艳1   

  1. 1. 中国科学院地理科学与资源研究所, 北京 100101;
    2. 香港理工大学土地测量与地理资讯学系, 香港
  • 收稿日期:2002-08-15 修回日期:2003-09-22
  • 通讯作者: 苏奋振,男,1972年生,副研究员,主要从事RS&GIS在环境、资源和生态方面的研究及其数据挖掘,发表论文近30篇.Tel:010-64889764;E-mail:sufz@lreis.ac.cn
  • 基金资助:
    国家863计划项目(2003AA637030,2002AA639400,2003AA604040)

Spatial heterogeneity of demersal fish in East China Sea

SU Fenzhen1, ZHOU Chenghu1, SHI Wenzhong2, DU Yunyan 1   

  1. 1. Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China;
    2. Department of Land-Surveying and Geo-Informatics, Hong Kong Polytechnic University, Hong Kong, China
  • Received:2002-08-15 Revised:2003-09-22

摘要: 运用空间自相关指数和变异函数分析东海区底层及近底层鱼类资源的空间自相关性和空间变异.其空间分布平均场的Geary c和Moran I指数分别为0.38和0.52,各向同性随机变异占总变异的59.9%,表明其空间分布具有中等自相关特性,空间变异中由随机引起的变异大于由空间相关尺度过程引起的变异;各方向变异属于几何异向性.资源密度的年际变化与C、C0和C+C0均呈正相关,说明年际平均密度的增加由空间自相关变异和随机变异共同引起,随机变异略强于空间自相关变异.

关键词: 鱼类资源, 海洋地理信息系统, 空间异质性, 变异函数, 空间自相关

Abstract: Quantitative analysis for the spatial distribution of fish is one of the important methods in fishery or fish ecology research.In this paper,the indexes Geary c and Moran I for the density distribution of demersal fish were calculated,and the semivariograms were drawn.The values of Geary c and Moran I were 0.38 and 0.52,respectively,and the C0/C0+C was 59.9%,which meant that the distribution had a medium spatial autocorrelation with anisotropy,and the heterogeneity caused by random was a little higher than that caused by spatial autocorrelative process.The annual fluctuation of density was caused by the spatial autocorrelation and the random,because the density was significantly positively correlated with the values of C,C0 and C+C0,respectively.

Key words: Fishery resources, Marine geographic information system, Spatial heterogeneity, Semivariogram, Spatial autocorrelation

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