Journal of Geo-information Science >
Spatiotemporal Variations and Influencing Factors of Hemorrhagic Fever with Renal Syndrome in Shaanxi Province
Received date: 2019-08-03
Request revised date: 2020-03-03
Online published: 2020-07-25
Supported by
National Natural Science Foundation of China(41571158)
State Key Laboratory of Resources and Environment Information Systems, Independent Innovation Project(O8R8B6A0YA)
National Key Research and Development Program(2016YFC1302602)
Copyright
Hemorrhagic Fever with Renal Syndrome (HFRS) is a rodent-borne endemic disease caused by Hantavirus, which poses an increasingly serious threat to public health, especially in China. In this country, Shaanxi Province is one of the top regions with the highest HFRS incidence in the past years. It is of great importance to explore the potential influences on the spatiotemporal variations of HFRS epidemics across this province, which would provide useful clues for local authorities making targeted interventions on this disease.The county-level HFRS incidence rates during 2005-2017, as well as some potential natural and socioeconomic variables, were collected and analyzed by using spatial auto-correlation and hot-spot analysis tools as well as a Geodetector tool to explore the spatiotemporal relationships between the incidence rates and the potential variables. The HFRS epidemics in Shaanxi Province were obviously higher than the national level and presented clear temporal fluctuation and spatial clustering at the county scale. More than 90% of the counties with relatively high HFRS incidence rates concentrated in the Guanzhong Plain where obvious spatial heterogeneity was also observed. Some variables including the percentage of plain area and construction land, and population density separately accounted for about 20% of spatial variations of the county-level epidemic across the whole province. By comparison, the spatial pattern of this epidemic in the Guanzhong Plain with no obvious socioeconomic differences was mainly affected by precipitation, normalized difference vegetation index, and land-use types. Thus, the Guanzhong Plain with both spatially clustering higher incidence rates and obviously differentiated natural and socioeconomic conditions was the crucial region of the HFRS prevalence across Shaanxi Province. We suggest that precipitation, vegetation conditions, and land-use types should be heavily considered by local authorities for making effective interventions on this disease across Shaanxi Province, especially in the Guanzhong Plain with relatively high land urbanization and population density.
ZHU Lingli , REN Hongyan , DING Feng , LU Liang , WU Sijia , CUI Cheng . Spatiotemporal Variations and Influencing Factors of Hemorrhagic Fever with Renal Syndrome in Shaanxi Province[J]. Journal of Geo-information Science, 2020 , 22(5) : 1142 -1152 . DOI: 10.12082/dqxxkx.2020.190420
表1 HFRS发病率分析相关的变量列表Tab. 1 List of variables used in the HFRS incidence analysis |
要素 | 数据 | 变量 | 时间 | 数据源 |
---|---|---|---|---|
气象要素 | 温度 | 年均温度 | 2005—2017 | 中国气象数据网 data.cma.cn |
降水量 | 年均降水量 | 2005—2017 | ||
景观要素 | NDVI | 年度NDVI | 2005—2017 | 中国科学院资源环境科学数据中心资源环境数据云平台 www.resdc.cn |
地形因子 | DEM、坡度、坡向、地形起伏度 | — | ||
地貌类型 | 平原、台地、丘陵、山地 | — | ||
土壤质地 | 砂土、粉砂土、黏土 | — | ||
社会经济要素 | 土地利用类型 | 耕地、林地、水域、建设用地 | 2005、2010、2015 | |
GDP | 公里格网GDP | 2005、2010、2015 | ||
人口密度 | 公里格网人口密度 | 2005、2010、2015 |
注:年份不全的使用相近年份代替。 |
表2 陕西省不同环境变量的交互作用探测Tab. 2 The dominant interactions between different environmental factors in Shaanxi Province |
年份 | 交互作用1 | q | 交互作用2 | q | 交互作用3 | q |
---|---|---|---|---|---|---|
2005 | 平原∩坡向 | 0.727 | 平原∩粉砂土 | 0.710 | 林地∩人口密度 | 0.652 |
2006 | 林地∩人口密度 | 0.624 | 水域∩人口密度 | 0.583 | 台地∩人口密度 | 0.578 |
2007 | 林地∩人口密度 | 0.610 | 平原∩林地 | 0.602 | 平原∩坡度 | 0.598 |
2008 | 平原∩降水量 | 0.603 | 平原∩地形起伏度 | 0.570 | 平原∩林地 | 0.567 |
2009 | 平原∩地形起伏度 | 0.693 | 平原∩林地 | 0.688 | 平原∩坡度 | 0.654 |
2010 | 平原∩地形起伏度 | 0.797 | 平原∩林地 | 0.790 | 平原∩坡度 | 0.763 |
2011 | 平原∩坡度 | 0.786 | 平原∩地形起伏度 | 0.756 | 平原∩林地 | 0.738 |
2012 | 平原∩NDVI | 0.531 | NDVI∩砂土 | 0.505 | 平原∩降水量 | 0.490 |
2013 | 台地∩黏土 | 0.564 | 平原∩温度 | 0.547 | 降水量∩丘陵 | 0.544 |
2014 | 平原∩降水量 | 0.662 | 平原∩坡度 | 0.659 | 平原∩温度 | 0.620 |
2015 | 平原∩坡度 | 0.671 | NDVI∩建设用地 | 0.657 | 平原∩温度 | 0.653 |
2016 | 平原∩温度 | 0.730 | 平原∩坡度 | 0.712 | 林地∩建设用地 | 0.710 |
2017 | 耕地∩建设用地 | 0.613 | 平原∩坡度 | 0.603 | 地形起伏度∩建设用地 | 0.592 |
表3 关中平原不同环境变量的交互作用探测Tab. 3 The dominant interactions between different environmental factors in Guanzhong Plain |
年份 | 交互作用1 | q | 交互作用2 | q | 交互作用3 | q |
---|---|---|---|---|---|---|
2005 | 降水量∩建设用地 | 0.885 | 林地∩人口密度 | 0.826 | 林地∩GDP | 0.818 |
2006 | NDVI∩温度 | 0.906 | 温度∩建设用地 | 0.855 | 黏土∩建设用地 | 0.839 |
2007 | 降水量∩建设用地 | 0.837 | 降水量∩人口密度 | 0.820 | 降水量∩黏土 | 0.793 |
2008 | 降水量∩建设用地 | 0.910 | 温度∩降水量 | 0.862 | 温度∩水域 | 0.857 |
2009 | 降水量∩建设用地 | 0.874 | 降水量∩人口密度 | 0.869 | 降水量∩耕地 | 0.835 |
2010 | 林地∩人口密度 | 0.850 | NDVI∩建设用地 | 0.829 | 降水量∩建设用地 | 0.823 |
2011 | 降水量∩耕地 | 0.877 | 水域∩粉砂土 | 0.804 | 降水量∩黏土 | 0.794 |
2012 | 降水量∩水域 | 0.911 | 降水量∩黏土 | 0.839 | 降水量∩耕地 | 0.810 |
2013 | NDVI∩水域 | 0.754 | 降水量∩水域 | 0.700 | 降水量∩未利用地 | 0.694 |
2014 | NDVI∩粉砂土 | 0.788 | NDVI∩温度 | 0.767 | 降水量∩NDVI | 0.764 |
2015 | 降水量∩黏土 | 0.872 | 降水量∩建设用地 | 0.841 | 温度∩降水量 | 0.822 |
2016 | 降水量∩砂土 | 0.841 | 降水量∩粉砂土 | 0.841 | 林地∩建设用地 | 0.828 |
2017 | 林地∩人口密度 | 0.808 | 降水量∩耕地 | 0.731 | NDVI∩砂土 | 0.731 |
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