Chinese Journal of Vector Biology and Control ›› 2022, Vol. 33 ›› Issue (4): 475-479.DOI: 10.11853/j.issn.1003.8280.2022.04.006

• Special Topics|Vector Surveillance in Zhejiang Province • Previous Articles     Next Articles

Spatial distribution characteristics and risk analysis of rodent density in Zhejiang province, 2021

LUO Ming-yu, WANG Jin-na, WU Yu-yan, LIU Qin-mei, LI Tian-qi, GONG Zhen-yu   

  1. Department of Infectious Disease Control and Prevention, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, Zhejiang 310051, China
  • Received:2022-02-17 Online:2022-08-20 Published:2022-08-12
  • Supported by:
    Zhejiang Medical and Health Technology Project (No. 2021KY119); National Science and Technology Major Project of China (No. 2017ZX10303404); Sub-item "Surveillance of COVID-19 and Other Key Infectious Diseases" of the Central Government's Transfer Payment to Local Public and Health


罗明宇, 王金娜, 吴瑜燕, 刘钦梅, 李天奇, 龚震宇   

  1. 浙江省疾病预防控制中心传染病预防控制所, 浙江 杭州 310051
  • 通讯作者: 龚震宇,
  • 作者简介:罗明宇,男,硕士,主管医师,主要从事病媒生物监测与防制,
  • 基金资助:

Abstract: Objective To investigate temporal and spatial distribution characteristics of rodent density and aggregation areas in Zhejiang province of China in 2021, and to provide a scientific basis for rodent control and deratization and the prevention and treatment of rodent-borne diseases. Methods Statistical description was performed for the data of rodent density monitoring in each county (city/district) from January to November 2021, and the global and local spatial autocorrelation analyses were used to analyze the spatial distribution characteristics of rodent density. Results From January to November in 2021, a total of 380 208 effective rat traps were placed and 1 851 rodents were captured, with a mean rodent density of 0.49 per 100 traps (snap, cages or plates). Rodent density showed an increasing trend from January to November (Z=3.913, P<0.001). Rodent density showed positive spatial autocorrelation within Zhejiang province, and there was a significant difference in Moran's I index among January, May, September, and November (all Z >1.96, P<0.05). The local spatial autocorrelation analysis showed that high-high aggregation areas were distributed in southern Zhejiang from January to November, which was consistent with the spatial distribution of the areas with high rodent density, and low-low aggregation areas were mainly distributed in northern and eastern Zhejiang. Conclusion The overall rodent density is at a relatively low level in Zhejiang province, but with a gradually increasing trend during the whole year of 2021. Rodent density in Zhejiang province shows geographical autocorrelation, and counties with a higher rodent density are mainly distributed in southern Zhejiang, and therefore, the risk of rodent-borne diseases should be concerned seriously in southern Zhejiang.

Key words: Rodent density, Seasonal variation, Spatial distribution characteristics, Spatial autocorrelation

摘要: 目的 描述和分析浙江省2021年鼠密度的时空分布特征,分析全省鼠类聚集区,为防鼠灭鼠和鼠传疾病防控提供科学依据。方法 对浙江省2021年1-11月各县(市、区)鼠密度监测数据进行统计描述,采用全局和局部空间自相关分析对鼠密度空间分布特征进行分析。结果 浙江省2021年1-11月共布放有效鼠夹380 208个,捕鼠1 851只,全年鼠密度为0.49只/100夹(笼、板)。1-11月鼠密度呈升高趋势(Z=3.913,P<0.001)。鼠密度在全省范围内呈空间正相关,1、5、9和11月Moran’s I指数有统计学意义(均Z>1.96,P<0.05);局部空间自相关分析结果显示,1-11月高-高聚集区均分布在浙南地区,与鼠密度较高地区空间分布一致;低-低聚集区主要分布在浙北、浙东地区。结论 浙江省2021年整体鼠密度处于较低水平,但存在逐月升高趋势。浙江省鼠密度存在地理区域自相关性,鼠密度较高的县(市、区)主要集中分布在浙南地区,需要关注浙南地区的鼠传疾病发病风险。

关键词: 鼠密度, 季节消长, 空间分布特征, 空间自相关

CLC Number: