沙漠与绿洲气象2025，Vol.19Issue(2)：28-36,9.DOI:10.12057/j.issn.1002-0799.2310.10003
石羊河流域风蚀气候侵蚀力时空特征
Spatial and Temporal Characteristics of Wind Erosion Climatic Erosivity in the Shiyang River Basin
摘要
Abstract
Based on observation data from 21 meteorological stations in the Shiyang River Basin from 1957 to 2021,the wind erosion climatic factor index(C factor)was calculated for the Shiyang River Basin.Methods such as Pearson correlation analysis,Mann Kendall(M-K)detection,inverse distance weight interpolation and principal component analysis were employed to analyze the trends and abrupt change characteristics of C factor at annual,seasonal and spatial scales,along with an analysis of relevant influencing factors.The results showed that C factor of the Shiyang River Basin from 1957 to 2021 ranged from 5 to 146,and the average value of the whole basin was 37.Spatially,C factor was higher in the northern desert and along the mountainous areas,and lower in the central oasis areas.The maximum C factor of 145.6 was observed in Hongshagang of Minqin desert area in the northern part of the basin,and the minimum C factor of 5.5 appeared in Tumen of Gulang oasis area of the basin.The basin's C factor showed significant seasonal variations,with the highest in spring,followed by summer,and the lowest in autumn and winter with little difference between them.The sum of C factor in spring and summer accounted for 61.2%of the annual total.On different time scales,the C factor showed a significant declining trend following an abrupt change around 1997,which was most likely caused by the significant abrupt change of wind speed around 1997 in the basin.The primary dynamic factors influencing the basin's C factor were the cumulative number of days with strong wind,cumulative number of sandstorm days and wind speed.The wind erosion climatic erosivity in the Shiyang River Basin was strong,with wind speed identified as the most crucial meteorological factor influencing the basin's C factor.关键词
石羊河流域/风蚀气候因子指数/空间分布/时间变化/影响因子Key words
Shiyang River Basin/wind erosion climatic factor index/spatial distribution/temporal variation/influencing factors分类
天文与地球科学引用本文复制引用
杨华,蒋菊芳,刘明春,任丽雯,李兴宇,马幸蔚,徐玉凤..石羊河流域风蚀气候侵蚀力时空特征[J].沙漠与绿洲气象,2025,19(2):28-36,9.基金项目
国家自然科学基金(42175192) （42175192）
中国气象局创新发展专项(CXFZ2024J056) （CXFZ2024J056）
甘肃省科技计划(25JRRH001) （25JRRH001）
甘肃省气象局重点项目(Zd2021-02) （Zd2021-02）
甘肃省气象局重点项目(Zd2024-D-3) （Zd2024-D-3）
甘肃省气象局面上项目(Ms2024-D-9) （Ms2024-D-9）
武威市科技计划项目(WW23B02NY204) （WW23B02NY204）
甘肃省气象局科研项目(Ms2025-D-11) （Ms2025-D-11）
武威市青年科技基金(WW24A01RPQ001) （WW24A01RPQ001）
