【摘要】 土壤碳汇储量研究为生态环境的治理提供理论依据与方向指导.采用ArcGIS、MRT、ENVI等软件，对2009年和2019年逐月气温、降水量、日照、MODIS归一化植被指数（NDVI）、全国植被类型数据进行处理，利用CASA模型插件计算石家庄市植被净初级生产力（NPP）.同时，运用土壤微生物呼吸模型计算石家庄市土壤碳汇，最终得到2009年和2019年研究区净生态系统生产力（NEP）分布图，显示出了NEP的时空变化规律，然后分析了影响NEP的相关因素.结果表明：2009年和2019年，石家庄市NEP空间上自中心向外围呈增加趋势，时间上明显下降，季节变化上夏高冬低.石家庄市NEP由碳汇转为碳源，与植被覆盖率降低、植物凋落物的人工清理以及农业用地大幅度减少等因素有关.更多还原

【Abstract】 Study of soil carbon sequestration can provide theoretical basis and direction for the management of ecological environment. ArcGIS, MRT, ENVI and other software are used to process monthly temperature, precipitation, sunshine, MODIS Normalized Vegetation Index(NDVI) and national vegetation type data in 2009 and 2019, the net primary productivity(NPP) of vegetation in Shijiazhuang City has been calculated by CASA model plug-in, and the soil carbon sink has been calculated by soil microbial respiration model. Finally, the net ecosystem productivity(NEP) distribution map of the study area in 2009 and 2019 are obtained, showing the temporal and spatial variation of NEP, and then the relevant factors affected NEP are analyzed. The results show that: In 2009 and 2019, the NEP of Shijiazhuang City increases from the center to the outside, decreases significantly in time, and the seasonal variation is higher in summer and lower in winter. The change of NEP from carbon sink to carbon source in Shijiazhuang is related to the decrease of vegetation coverage, the artificial removal of plant litter and the decrease of agricultural land.更多还原