川滇农牧交错带干湿状况时空变化特征研究  

Study on the Spatiotemporal Variation Characteristics of Dry and Wet Conditions in the Sichuan-Yunnan Agro-Pastoral Transition Zone

作　　者：黄玺玮 侯玲琳 周丽[3] HUANG Xiwei;HOU Linglin;ZHOU Li(Xizang Changdu No.4 High School,Changdu 854000,China;School of Governance,Suining Campus,Sichuan Normal University,Suining 629000,China;School of Geography and Resource Science,Neijiang Normal University,Neijiang 641100,China)

机构地区：[1]西藏昌都市第四高级中学,西藏昌都854000 [2]四川师范大学遂宁校区治理学院,四川遂宁629000 [3]内江师范学院地理与资源科学学院,四川内江641100

出　　处：《中国资源综合利用》2024年第11期67-69,共3页China Resources Comprehensive Utilization

基　　金：四川省教育厅重点项目(18ZA0275)。

摘　　要：根据1980—2015年川滇农牧交错带范围内17个地面观测站点的逐日气象资料,分别基于年代际、年及季节时间尺度分析了交错带地表湿润指数(Surface Wetnes Index,SWI)的时空变化特征。分析结果表明,1980—2015年该区总体经历了湿化到旱化的演变历程,尤其在21世纪以后干旱趋势愈加显著;春季、秋季呈变干趋势,夏季略趋于湿润,冬季干湿变化不明显,局部地区旱化主要由秋季明显变干引起。Based on the daily meteorological data of 17 ground observation stations within the Sichuan Yunnan agropastoral ecotone from 1980 to 2015,the spatiotemporal variation characteristics of the Surface Wetnes Index(SWI)in this ecotone are analyzed on the basis of interdecadal,annual and seasonal time scales.The analysis results indicate that from 1980 to 2015 the region has undergone an overall evolution from humidification to aridification,especially since the 21st century when drought has become increasingly significant;the entire region shows a slight drying trend in spring and autumn,with a slightly humid in summer,and there has no significant change in winter among which local drought is mainly caused by the obvious drying in autumn.

关 键 词：地表湿润指数(SWI) 时空变化 干湿状况 

分 类 号：P426[天文地球—大气科学及气象学]