摘要
对新疆2000-2010年雪灾监测数据进行统计分析,利用时空自相关方法对新疆雪灾进行时空自相关分析,探讨了雪灾的时空演变特征。研究结果表明,新疆雪灾主要发生在1月和2月,分布在北疆地区;不同时间尺度的雪灾的发生具有显著的空间自相关性,呈现显著的聚集模式;雪灾高聚集的区域主要集中在北疆,而雪灾低聚集的区域主要分布在南疆;对相邻的月份来说,上一月份发生的雪灾对下一月份的雪灾有直接影响,即上一个月雪灾高聚集的区域在下一个月也很有可能是雪灾高聚集的区域;随着两个月份相隔的时间越长,上月份的雪灾对下月份雪灾的影响不大。
Based on statistical analysis on monitoring data of snow disasters from 2000 to 2010 in Xinjiang, and by using spatio-temporal autocorrelation analysis,the snow disasters are analyzed and their spatio-temporal clustered patterns are explored. The results show that snow disaster that occurs frequently in January and February mainly distributes in Northern Xinjiang. The snow disaster frequencies in different time scales show significant spatial autocorrelation and clustering patterns. The regions with high-high frequencies of snow disasters mainly center on the Northern Xinjiang,while some other regions with low-low frequencies distribute on the Southern Xinjiang. The snow disasters in the current month can affect directly the snow disasters in the next month. In other words,the clustered regions with high snow disaster frequency in the previous month may also be the clustered regions with high values in the next month. However,the influence of the previous snow disaster case on the next snow disaster case gradually decreases with the increasing time intervals between the two months.
出处
《灾害学》
CSCD
北大核心
2014年第1期221-227,共7页
Journal of Catastrophology
基金
公益性行业(气象)科研专项(GYHY201106007)
民政部减灾和应急工程重点实验室/资助机构开放基金资助项目(LDRE-RE20120203)
中央高校基本科研业务费专项资金资助项目(2012619020202)
地理空间信息工程国家测绘地理信息局重点实验室开放研究基金资助项目(201329)
关键词
雪灾
新疆
Moran’s
I
时空自相关分析
snow disaster
Xinjiang
Moran＇s I
spatio-temporal autocorrelation analysis
