水土保持研究2024，Vol.31Issue(1)：363-372,10.DOI:10.13869/j.cnki.rswc.2024.01.033
川西北高原区植被覆盖变化及驱动力
Change and Driving Force Analysis of Vegetation Cover in the Northwest Sichuan Plateau
摘要
Abstract
[Objective]The aims of this study are to investigate the dynamics of vegetation coverage changes and their underlying drivers in the northwestern Sichuan Plateau region,and to supply a theoretical founda-tion for regional vegetation conservation and restoration initiatives.[Methods]MODIS NDVI was utilized as the foundational dataset.By integrating Sen's trend analysis,Manna-Kendall test,and the Hurst model,we comprehensively analyzed the spatial distribution characteristics,trends spanning nearly 20 years,and pro-spective sustainable state of the region.Moreover,the study employed geographical detectors to delve into the underlying driving forces.[Results](1)The overall vegetation cover in the area was relatively great in the east.(2)In the whole period,the vegetation cover of 80.56％of the regions showed no significant change,and the vegetation cover of the regions with significant improvement accounted for 17.80％.(3)The Hurst index indicates that the overall vegetation cover will be in the development state of no significant change in the future.(4)The one-factor explanatory power of elevation,annual average temperature and soil type surpassed more than 30％.They were the main factors driving the formation of differences in vegetation cover distribution patterns.The interaction and synergy of each factor were enhanced.There were obvious differences in the intervals or types of suitable vegetation growth of each factor.(5)The natural factors dom-inated the formation of the overall pattern of spatial distribution of regional vegetation cover,whose land use types were the key factors in driving its dynamic change.In the past 20 years,the vegetation cover in the West Sichuan Plateau had changed significantly,and natural factors had dominated the spatial distribution pattern of regional vegetation cover.[Conclusion]In the past 20 years,the vegetation cover in the study area had a clear change pattern.Although natural factors dominate the spatial layout of vegetation cover,human activities are the main driving factors for its pattern change.关键词
NDVI/植被覆盖/地理探测器/驱动力/川西高原区Key words
NDVI/vegetation cover/geographic detector/driving force/western Sichuan Plateau分类
资源环境引用本文复制引用
姚昆,何磊,白琳,罗涵..川西北高原区植被覆盖变化及驱动力[J].水土保持研究,2024,31(1):363-372,10.基金项目
国家全球变化与应对重点研发项目(2020年YFA0608203) （2020年YFA0608203）
中国气象局风云卫星应用先行计划项目(FY-APP-2021年.0304) （FY-APP-2021年.0304）
中国长江三峡集团有限公司项目(0704181) （0704181）
凉山州学术带头人和技术带头人培养资金(ZRS202001) （ZRS202001）
西昌学院博士科研启动项目(YBZ202108,YBZ202125) （YBZ202108,YBZ202125）
西南土地资源评价与监测教育部重点实验室开放基金(TDSYS202109) （TDSYS202109）
四川省社会科学重要研究基地(TJGZL-15) （TJGZL-15）
