基于MOD10A1 V6产品下青海省各片区积雪的分布气候特征  

Climate characteristics of snow cover distribution in ecological function areas of Qinghai Province based on MOD10A1 V6

作　　者：史飞飞 李晓东[1,2] 肖建设[1,2] 雷春苗 曹晓云 苏文将[1,2] 石明明 刘致远 SHI Feifei;LI Xiaodong;XIAO Jianshe;LEI Chunmiao;CAO Xiaoyun;SU Wenjiang;SHI Mingming;LIU Zhiyuan(Institute of Qinghai Meteorological Science Research,Xining 810008,China;Key Laboratory of Disaster Prevention and Mitigation of Qinghai Province,Xining 810008,China;Qinghai Meteorological Service Center,Xining 810008,China;School of Geographical Sciences,Qinghai Normal University,Xining 810008,China)

机构地区：[1]青海省气象科学研究所,西宁810008 [2]青海省防灾减灾重点实验室,西宁810008 [3]青海省气象服务中心,西宁810008 [4]青海师范大学地理科学学院,西宁810008

出　　处：《生态科学》2024年第4期27-38,共12页Ecological Science

基　　金：国家自然科学基金项目(41761078);科技部基础资源调查专项课题(2017FY10050);第二次青藏高原综合科学考察研究项目(2019QZKK0106);青海省气象科学技术研究项目(QXZD2021-11,QXZD2019-2);青海省科技厅项目(2021-SF-141)。

摘　　要：利用MOD10A1 V6版积雪产品获取青海省及省内各重要生态功能区的积雪信息,并对积雪变化与气候因子间的响应关系进行分析。结果表明:(1)16年来青海省内积雪覆盖面积变化存在空间差异性,可可西里积雪覆盖面积显著增加(p<0.05)而其他生态功能区变化不显著,从阶段变化来看青海省及各生态功能区在2016积雪季后积雪覆盖面积大幅增加,而在2016积雪季前仅柴达木盆地积雪覆盖面积显著减少(p<0.05),其余地区减少趋势不显著。(2)16年来青海省内积雪日数变化存在空间差异性,可可西里内26.8%的面积积雪日数显著增加(p<0.05),而三江源腹部、柴达木盆地东部和祁连山地区西部积雪日数显著减少(p<0.05)。(3)近16年来青海省及各生态功能区积雪覆盖面积与降水显著正相关(r>0.65,p<0.01),与气温显著负相关(r>0.5,p<0.05),其中在青海省、祁连山、可可西里和柴达木盆地的积雪覆盖面积变化主要受降水主导,而三江源和青海湖流域则是由气温和降水共同影响。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 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]