The authors used MOD10A1 V6 Snow Cover product to monitor the snow cover information of Qinghai Province and important ecological function zones in Qinghai Province,and analyzed the response relationship between snow cover change and climate factors.The results showed that:(1)In recent 16 years,there were spatial differences in the variation of snow cover area in Qinghai Province.The snow cover area in Hoh Xil increased significantly(p<0.05)while that in other areas was modest.From the perspective of periodic change,the snow cover area in Qinghai Province and all ecological functional areas experienced a dramatic rising after the 2016 snow season,before the 2016 snow season,the snow cover area in Qaidam Basin decreased significantly(p<0.05),while the decrease trend in other areas was not significant.(2)In recent 16 years,there were spatial differences in the variation of snow cover days in Qinghai Province.The number of snow cover days in 26.8%of the Hoh Xil area showed an interannual rising trend overall(p<0.05),while the that of the whole province and other ecological function zones revealed a decreasing trend.The areas with significant decreasing snow cover days in Qinghai Province were mainly located in the central part of Sanjiangyuan,the east of Qaidam Basin and the north part of Qilian Mountains.(3)In recent 16 years,the snow cover area in Qinghai Province and each ecological function zones had a significant positive correlation with precipitation(r>0.65,p<0.01),but a significant negative correlation with temperature(r>0.5,p<0.05).The amount of precipitation was the principal climate factor for the change of snow cover area in Qinghai Province,Qilian Mountains,Hoh Xil and Qaidam Basin,while the change of snow cover area in Sanjiangyuan and Qinghai Lake Basin was influenced by a combination of air temperature and precipitation.
关键词
MOD10A1/V6积雪产品/积雪气候特征/积雪覆盖面积/积雪日数/生态功能区
Key words
MOD10A1 V6 Snow Products/snow climate characteristics/snow cover area/snow cover days/ecological function zones
维普
万方数据