人民黄河

准确评估黄河流域河南段生态系统碳储量，对促进区域低碳可持续发展，实现“双碳”目标具有重要意义。基于碳密度采样数据构建了黄河流域河南段碳密度空间密度分布数据集，结合土地利用遥感数据系统评估了1980年、1990年、2000年、2005年、2010年、2015年、2020年黄河流域河南段生态系统碳储量及时空演变规律，利用地理探测器探讨了自然和社会经济等因素对碳储量的影响。结果表明:近40 a黄河流域河南段平均碳储量为431.16×10~6t，空间上呈现东部略高于西部、由东北向西南递减的分布格局，高值聚集区主要分布在黄河下游滩区; 2000年以前黄河流域河南段生态系统碳储量降低，之后增加，1980—2020年黄河流域碳储量整体呈下降趋势; 1980—2020年，黄河流域河南段82.05%的区域碳储量保持不变，10.05%的区域碳储量减少，7.90%的区域碳储量增加;土地利用类型是驱动该区域碳储量动态变化的关键因素，建设用地的不断扩张及耕地和草地被侵占是导致碳储量显著下降的主要原因，海拔和气温对碳储量变化也产生了一定影响。

Accurately assessing the carbon storage of the ecosystem in the Henan section of the Yellow River Basin is of great significance for promoting low-carbon sustainable development in the region and achieving the " dual carbon" goals. Based on carbon density sampling data,a spatial density distribution dataset of carbon density in the Henan section of the Yellow River Basin was constructed. Combined with remote sensing data on land use,a systematic assessment was conducted of the carbon storage patterns and spatio-temporal evolution laws of the ecosystem in the Henan section of the Yellow River Basin for the years 1980,1990,2000,2005,2010,2015,and 2020. The Geographic Detector was utilized to explore the influence of natural and socio-economic factors on carbon storage. The results indicate that the average carbon storage in the Henan section of the Yellow River Basin over the past 40 years was 431.16×10~6t,with a spatial distribution pattern showing a slight increase from east to west and a decreasing trend from northeast to southwest,with high-value agglomeration areas mainly distributed in the downstream floodplain of the Yellow River. Before 2000,the ecosystem carbon storage in the Henan section of the Yellow River Basin decreased,followed by an increase. The carbon storage in the Yellow River Basin from 1980 to 2020 showed a downward trend. Between 1980 and 2020,82.05% of the region in the Henan section of the Yellow River Basin maintained unchanged carbon storage,while 10.05% experienced a decrease and 7.90% an increase. Changes in land use type were the key drivers of dynamic changes in carbon storage in this region,especially the continuous expansion of construction land and encroachment on farmland and grassland,which were the main reasons for the significant decline in carbon storage. Altitude and temperature also had a certain impact on changes in carbon storage.