摘要
为明确宁夏2000年以来植被生产力时空变化特征及驱动因子,基于MODIS植被净初级生产力(NPP)数据MOD17A3HGF,应用Sen′s斜率、Mann-Kendall趋势检验、Hurst指数分析2000—2020年宁夏NPP时空变化特征,应用地理探测器探测气象条件、地形地貌、社会经济等10个因子对宁夏NPP空间分布差异的影响。结果表明:2000—2020年,宁夏植被净初级生产力空间分布为南北高、中间低,NPP增长速率为52.8 gC·m^(-2)·(10 a)^(-1),显著增大的区域占全区面积的91.4%。Hurst指数均值为0.447,未来NPP为较弱反持续性,即未来变化与过去变化相反,有弱减小趋势。气象条件是影响宁夏NPP空间分布差异的主要因素,社会经济因子影响力不明显。
To clarify the spatiotemporal variation characteristics and driving factors of vegetation productivity in Ningxia since 2000,this study utilizes MODIS Net Primary Productivity(NPP)data(MOD17A3HGF),Sen′s slope,Mann-Kendall trend test,and Hurst index to investigate the changes in NPP from 2000 to 2020.Employing the geographical detector,the study examines the influence of ten factors including meteorological conditions,topography,and socioeconomic aspects on the spatial differentiation of vegetation NPP in Ningxia.The results indicate that from 2000 to 2020,the spatial distribution of vegetation NPP in Ningxia was high in the north and south and low in the middle,with an NPP growth rate of 52.8 gC·m·(10 a^(-1)),and significant increases observed in 91.4%of the region.The average Hurst index is 0.447,suggesting a weak anti-persistence in future NPP,indicating a slight decreasing trend.Meteorological conditions are identified as the primary factor influencing the spatial differentiation of vegetation NPP in Ningxia,while the impact of socio-economic factors is not significant.
作者
赵慧
李梦华
杨建玲
李剑萍
王艳萍
韩颖娟
吴海英
ZHAO Hui;LI Menghua;YANG Jianling;LI Jianping;WANG Yanping;HAN Yingjuan;WU Haiying(Key Laboratory of Meteorological Disaster Monitoring,Early Warning,and Risk Management of Characteristic Agriculture in Arid Regions,China Meteorological Administration,Yinchuan 750002,China;Ningxia Key Laboratory of Meteorological Disaster Prevention and Reduction,Yinchuan 750002,China;Ningxia Institute of Meteorological Sciences,Yinchuan 750002,China;Wuzhong Meteorological Service,Wuzhong 751100,China;Ningxia Meteorological Information Center,Yinchuan 750002,China;Yanchi Meteorological Service,Yanchi 751500,China)
出处
《气象与环境学报》
2024年第4期107-115,共9页
Journal of Meteorology and Environment
基金
第五批宁夏青年科技人才托举工程
国家自然基金联合基金项目(U22A20577)
宁夏自然科学基金项目(2022AAC03681、2022AAC03679)
中亚大气科学研究基金项目(CAAS202013)
风云三号03批气象卫星工程地面应用系统(FY-3(03)-AS-12.12-ZT)共同资助。
关键词
HURST指数
地理探测器
气象条件
Hurst index
Geographical detector
Meteorological conditions