从各生境类型占比的角度探讨底栖动物多生境采样方法数据质量的提高  

Discussing the improvement of data quality in benthic macroinvertebrate multi-habitat sampling:a perspective on habitat type proportion

作　　者：池宏明 CHI Hongming(Liaoning Fuxin Ecological Environment Monitoring Center,Fuxin 123000,China)

机构地区：[1]辽宁省阜新生态环境监测中心,辽宁阜新123000

出　　处：《黑龙江环境通报》2025年第1期30-34,共5页Heilongjiang Environmental Journal

摘　　要：目前我国底栖大型无脊椎动物采用多生境采样方法进行定量采样时,对于各生境类型在定量样品中占比与它们在采样河段中占比(以下简称双比)的一致性尚没有明确要求。实际定量样品采集过程中,采样人员对采样河段内各生境类型的采次相对随机,普遍存在双比不一致、误差较大的情况。基于底栖动物的种类和数量在各生境类型中的分布存在明显差异的特性,该误差在未经修正的情况下将影响定量样品代表性,及数据可靠性和准确性。可通过将现场评估获得的各生境类型在采样河段中的占比引入计算过程的方式修正双比误差带来的影响。模拟验证及对比结果显示,占比修正后的数据质量得到显著提高。Currently,in China,when using multi-habitat sampling methods for quantitative sampling of benthic macroinvertebrates,there is currently no explicit requirement for consistency between the proportion of each habitat type within the quantitative samples and their actual proportion in the sampled river reach(hereinafter referred to as the"double ratio").During the actual collection of quantitative samples,the sampling personnel tend to have a relatively random approach to the sampling of different habitat types within the river reach,resulting in general inconsistencies and significant errors in the double ratio.Given the distinct distribution patterns of benthic species and their numbers across different habitat types,such errors can affect the representativeness of the quantitative samples,as well as the reliability and accuracy of the data if left uncorrected.The impact of the double ratio error can be corrected by incorporating the proportion of habitat types obtained from on-site assessments into the calculation process.Simulation validation and comparative results demonstrate that the quality of the data is significantly improved after the proportion correction.

关 键 词：大型底栖无脊椎动物 多生境采样法 生境类型占比 提高 

分 类 号：Q958.8[生物学—动物学]