法医学杂志 ›› 2025, Vol. 41 ›› Issue (6): 552-558.DOI: 10.12116/j.issn.1004-5619.2023.431205

• 论著 • 上一篇    下一篇

基于水中尸体腐败程度评分推断长江荆州段尸体死后淹没时间

王玉梅()   

  1. 长江航运公安局荆州分局刑事侦查支队,湖北 荆州 434000
  • 收稿日期:2023-12-08 发布日期:2026-02-27 出版日期:2025-12-25
  • 作者简介:王玉梅(1994—),女,主要从事法医学现场勘验和鉴定;E-mail:2368259437@qq.com

Postmortem Submersion Interval Estimation of Bodies Recovered from the Jingzhou Reach of the Yangtze River by Aquatic Decomposition Score

Yu-mei WANG()   

  1. Criminal Investigation Detachment, Jingzhou Branch of Yangtze River Shipping Public Security Bureau, Jingzhou 434000, Hubei Province, China
  • Received:2023-12-08 Online:2026-02-27 Published:2025-12-25

摘要:

目的 探索利用水中尸体腐败程度评分推断长江荆州段尸体死后淹没时间(postmortem submersion interval,PMSI)的方法。 方法 收集长江航运公安局荆州分局2018—2022年办理的已知PMSI的长江荆州段尸体案例共105例,根据月均水温是否低于20 ℃分为夏季组和冬季组,对照水中尸体腐败程度评分表计算每具尸体的总体水中腐败分值(total aquatic decomposition score,TADS),利用统计学方法分析TADS与PMSI的关系后通过自然对数变换分别构建出两个回归方程。选择2023年办理的6例水中尸体对方程进行验证。 结果 在夏季组和冬季组中,PMSI与TADS均呈正相关(R2>0.70),夏季组回归方程为TADS=5.117+4.825×ln(PMSI),冬季组为TADS=3.191+3.967×ln(PMSI)。 结论 结合水温的变化特点,可以利用尸体的腐败程度推断长江荆州段尸体的PMSI。

关键词: 法医病理学, 死后淹没时间, 水中尸体, 腐败, 总体水中腐败分值

Abstract:

Objective To explore the method of postmortem submersion interval (PMSI) estimation for bodies from the Jingzhou reach of the Yangtze River, utilizing an aquatic decomposition score. Methods A total of 105 cases of known PMSI bodies recovered from the Jingzhou reach of the Yangtze River were collected from the cases handled by the Jingzhou Branch of Yangtze River Shipping Public Security Bureau from 2018 to 2022. Considering the average monthly temperature, these cases were categorized into summer and winter groups, with the threshold set at 20 ℃. For each case, the total aquatic decomposition score (TADS) was assessed using the aquatic decomposition score table. The relationship between TADS and PMSI was explored using statistical approach, and two regression equations were established respectively through the natural logarithmic transformation of PMSI. Six bodies recovered in 2023 from the Jingzhou reach of the Yangtze River were selected to verify the equations. Results In both summer and winter groups, PMSI was positively correlated with TADS (R2>0.70). The regression equation of summer group was TADS=5.117+4.825×ln(PMSI), and for the winter group, it was TADS=3.191+3.967×ln(PMSI). Conclusion The decomposition degree of the bodies can be used to estimate PMSI combined with the feature of water temperature of the Jingzhou reach of the Yangtze River.

Key words: forensic pathology, postmortem submersion interval (PMSI), water-immersed bodies, decomposition, total aquatic decomposition score (TADS)

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