不同采样设计评估鱼类群落效果比较

应用生态学报

不同采样设计评估鱼类群落效果比较

赵静¹,章守宇^1,2**,林军¹,周曦杰¹

(¹上海海洋大学海洋科学学院, 上海 201306; ^2上海海洋大学海洋生态系统与环境实验室, 上海 201306)

出版日期:2014-04-18 发布日期:2014-04-18

A comparative study of different sampling designs in fish community estimation.

ZHAO Jing¹, ZHANG Shou-yu^1,2, LIN Jun¹, ZHOU Xi-jie¹

(¹College of Marine Science, Shanghai Ocean University, Shanghai 201306, China; ^2Marine Ecosystem and Environmental Laboratory, Shanghai Ocean University, Shanghai 201306, China)

Online:2014-04-18 Published:2014-04-18

摘要/Abstract

摘要：

鱼类群落生态学研究结果的准确性很大程度上依赖于采样设计的合理性和准确性,正确的采样调查设计不仅可以降低调查成本,其结果也对渔业资源的评估或者管理起到相当重要的作用.本文利用计算机模拟定点采样、简单随机采样和分层采样,比较了3种采样设计的采样效果、相对误差及相对偏差.结果表明：定点采样设计的采样效果 (采样效果平均值为3.37)要弱于简单随机采样和分层随机采样 (采样效果平均值为0.961).3种采样设计中,分层采样设计在鱼类群落丰富度评估时表现最好,其采样效果、相对误差和相对偏差表现最佳.随着采样数的增加,分层采样设计的采样效果有所下降,但其采样精度提高.

Abstract:

The study of fishery community ecology depends on quality and quantity of data collected from welldesigned sampling programs. The optimal sampling design must be costefficient, and the sampling results have been recognized as a significant factor affecting resources management. In this paper, the performances of stationary sampling, simple random sampling and stratified random sampling in estimating fish community were compared based on computer simulation by design effect (De), relative error (REE) and relative bias (RB). The results showed that, De of stationary sampling (average De was 3.37) was worse than simple random sampling and stratified random sampling (average De was 0.961). Stratified random sampling performed best among the three designs in terms of De, REE and RB. With the sample size increased, the design effect of stratified random sampling decreased but the precision and accuracy increased.

赵静1,章守宇1,2**,林军1,周曦杰1. 不同采样设计评估鱼类群落效果比较[J]. 应用生态学报.

ZHAO Jing1, ZHANG Shou-yu1,2, LIN Jun1, ZHOU Xi-jie1. A comparative study of different sampling designs in fish community estimation.[J]. Chinese Journal of Applied Ecology.