摘要
利用长时间多源遥感数据集,运用空间自相关分析和小波分析等方法进行研究分析近36年东北地区积雪面积的时空变化规律.研究表明:除了10月和4月外,其余6个月Moran’s I的值都大于0.8,东北积雪空间自相关表现出了极强的空间集聚性,10月到来年4月份之间的积雪覆盖均呈现出较强的空间相关性,且均为聚集状态;对于时间分析上而言,东北地区积雪面积基本是处于稳定状态,但依然略有增加趋势,存在2~3年和5~6年的年际尺度变化周期的规律状态.在气候变暖背景下,东北地区的积雪面积总体保持了一个稳定状态.
Using long-term multi-source remote sensing data sets,the spatial and temporal variation of snow cover area in northeast China in recent 36 years was analyzed by means of spatial autocorrelation analysis and wavelet analysis.The results show that except October and April,the value of Moran’s I is more than 0.8 in the other six months,the snow cover between October and April shows a strong spatial correlation and is in an aggregated state,while the snow cover in the northeast is basically stable in terms of time analysis,but it still increases slightly,there are two-three-year and five-six-year inter-annual scale change cycle regular state.Under the background of climate warming,the snow cover area in northeast China has maintained a stable state.
作者
李续光
万鲁河
和鑫溢
Li Xuguang;Wan Luhe;He Xinyi(Harbin Normal University;Shanxi Institute of Engineering and Technology)
出处
《哈尔滨师范大学自然科学学报》
CAS
2020年第1期73-81,共9页
Natural Science Journal of Harbin Normal University
