法医学杂志 ›› 2022, Vol. 38 ›› Issue (1): 92-97.DOI: 10.12116/j.issn.1004-5619.2021.410603

所属专题: 水中尸体研究专题

• 论著 • 上一篇    下一篇

德州市漳卫新河硅藻的变化规律

李鹏1(), 王萍2,3, 张以刚1, 胡琨1, 袁明俊1, 张磊磊4()   

  1. 1.德州市公安局物证鉴定研究中心,山东 德州 253000
    2.中国人民公安大学,北京 100038
    3.公安部物证鉴定中心,北京 100038
    4.山东省公安厅物证鉴定研究中心,山东 济南 250001
  • 收稿日期:2021-06-08 出版日期:2022-02-25 发布日期:2022-06-21
  • 通讯作者: 张磊磊
  • 作者简介:张磊磊,男,硕士,副主任法医师,主要从事法医病理学鉴定;E-mail:2002zhanglei@163.com
    李鹏(1988—),男,助理工程师,主要从事理化检验鉴定;E-mail:1032888468@qq.com
  • 基金资助:
    中央级基本科研业务费资助项目(2019JB021);山东省重点研发计划(重大科技创新工程)资助项目(202120426)

Change Rule of Diatom in Zhangweixin River in Dezhou

Peng LI1(), Ping WANG2,3, Yi-gang ZHANG1, Kun HU1, Ming-jun YUAN1, Lei-lei ZHANG4()   

  1. 1.Material Evidence Authentication and Research Center of Dezhou Public Security Bureau, Dezhou 253000, Shandong Province,China
    2.People’s Public Security University of China, Beijing 100038, China
    3.Institute of Forensic Science, Ministry of Public Security, Beijing 100038, China
    4.Institute of Forensic Science, Shandong Provincial Public Security Bureau, Jinan 250001, China
  • Received:2021-06-08 Online:2022-02-25 Published:2022-06-21
  • Contact: Lei-lei ZHANG

摘要: 目的

研究漳卫新河硅藻的年度变化规律,为利用硅藻检验判断尸体入水时间、地点提供理论支撑,并建立硅藻数据库。

方法

对漳卫新河德城区段4处采样点连续12个月采样,对样品硅藻种属和含量进行非度量型多维尺度(non-metric multi-dimensional scaling,NMDS)分析,以天衢路采样点为基准,与德城区段其他3处及之前研究中漳卫新河乐陵段和宁津段数据进行Sprensen相似系数分析。

结果

硅藻种类数与硅藻含量呈正相关。不同月份硅藻的平均含量在1 054~13 041个/10 mL,种属构成为8~16个,优势种属存在差异。硅藻种属构成距离2 km以内相似系数均高于0.956 52,不能进行有效区分。在流域跨市县时相似系数有明显差异,与乐陵段采样点相似系数为0.736 84,与宁津段采样点相似系数为0.588 24,可以进行有效区分。

结论

漳卫新河硅藻种属和含量因月份不同具有差异性,硅藻种属构成在不同流域存在差异,可以为判断河流中尸体入水时间和地点提供参考依据。

关键词: 法医病理学, 硅藻检验, 溺死, 变化规律, 漳卫新河, 山东

Abstract: Objective

To study the annual variation of diatoms in Zhangweixin River, to provide theoretical support by using diatom examination to estimate the time and place of the corpse entering water, and to establish a diatom database.

Methods

Samples were taken from 4 sampling sites in Decheng section of Zhangweixin River for 12 consecutive months. Non-metric multi-dimensional scaling (NMDS) analysis was performed on the species and content of diatom samples. Based on the sampling site of Tianqu Road, Sprensen similarity coefficient analysis was conducted with the data of other 3 sites in Decheng section and Leling section of Zhangweixin River and Ningjin section in previous studies.

Results

The number of diatom species was positively correlated with diatom content. The average diatom content in different months ranged from 1 054 to 13 041/10 mL, and the species composition ranged from 8 to 16, with differences in dominant species. The similarity coefficient of diatom species within 2 km were all higher than 0.956 52, which could not be distinguished effectively. The similarity coefficients of Leling section and Ningjin section were 0.736 84 and 0.588 24 respectively, which could be effectively distinguished.

Conclusion

The species and content of diatom vary in different months in Zhangweixin River, and the composition of diatom species is different in different basins, which can provide reference for estimating the time and place of the corpse entering water in the river.

Key words: forensic pathology, diatom test, drowning, law of change, Zhangweixin River, Shandong

中图分类号: