Using Satellite Data for the Characterization of Local Animal Reservoir Populations of Hantaan Virus on the Weihe Plain, China
Using Satellite Data for the Characterization of Local Animal Reservoir Populations of Hantaan Virus on the Weihe Plain, China
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利用卫星数据对中国渭河平原汉滩病毒当地动物库种群进行表征
DOI：
10.3390/rs9101076
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发表时间：
2017-10-01
期刊：
影响因子：
5
通讯作者：
Wang，Jingjun
中科院分区：
文献类型：
--
作者：
Yu，Pengbo;Li，Yidan;Wang，Jingjun
黑线姬鼠（Apodemus agrarius）是汉滩病毒（HTNV）的主要宿主，该病毒是中国中部肾综合征出血热（HFRS）的病因。研究表明，宿主种群密度与病原菌动态和疾病风险相关。因此，A.一个地区的黑线姬鼠可能表明HFRS爆发的风险较高。在这里，我们调查了A。利用2005 - 2012年渭河平原农田黑线姬鼠种群密度的监测数据，研究了该地区农田黑线姬鼠种群动态与种群数量的关系。农业人口和农田环境条件，以遥感为基础的指标为代表。这些指标包括归一化植被指数、叶面积指数、植被吸收的光合有效辐射分数、净光合作用（PsnNet）、总初级生产力和地表温度。应用结构方程模型（SEM）检测PsnNet、A.黑线姬鼠种群密度与HFRS风险的关系。结果表明，A.在研究区96个月的诱捕中，黑线姬鼠是最常捕获的物种，捕获率为0.9个个体/100个诱捕夜。HFRS发病风险与A.黑线鳕，有1-5个月的滞后。A. agrarius也被发现与农业活动和季节与高PsnNet。SEM结果表明，PsnNet对鼠源性HFRS的发病率有间接的正效应。总之，基于遥感的环境指标PsnNet与HTNV水库种群动态高度相关，具有3个月的滞后性（r = 0.46，p < 0.01），可以作为HFRS潜在爆发的预测因子。
Striped field mice (Apodemus agrarius) are the main host for the Hantaan virus (HTNV), the cause of hemorrhagic fever with renal syndrome (HFRS) in central China. It has been shown that host population density is associated with pathogen dynamics and disease risk. Thus, a higher population density of A. agrarius in an area might indicate a higher risk for an HFRS outbreak. Here, we surveyed the A. agrarius population density between 2005 and 2012 on the Weihe Plain, Shaanxi Province, China, and used this monitoring data to examine the relationships between the dynamics of A. agrarius populations and environmental conditions of crop-land, represented by remote sensing based indicators. These included the normalized difference vegetation index, leaf area index, fraction of photosynthetically active radiation absorbed by vegetation, net photosynthesis (PsnNet), gross primary productivity, and land surface temperature. Structural equation modeling (SEM) was applied to detect the possible causal relationship between PsnNet, A. agrarius population density and HFRS risk. The results showed that A. agrarius was the most frequently captured species with a capture rate of 0.9 individuals per hundred trap-nights, during 96 months of trapping in the study area. The risk of HFRS was highly associated with the abundance of A. agrarius, with a 1–5-month lag. The breeding season of A. agrarius was also found to coincide with agricultural activity and seasons with high PsnNet. The SEM indicated that PsnNet had an indirect positive effect on HFRS incidence via rodents. In conclusion, the remote sensing-based environmental indicator, PsnNet, was highly correlated with HTNV reservoir population dynamics with a 3-month lag (r = 0.46, p < 0.01), and may serve as a predictor of potential HFRS outbreaks.