改革开放40年来江西省固碳能力时空变化

Temporal and Spatial Changes of Carbon Sequestration Capacity of Jiangxi Province Since the Reform and Opening-up over 40 Years Ago

实现双碳目标已经成为我们面临的迫在眉睫的任务,为深入了解江西省改革开放40年来的碳固定能力、时空变化规律以及驱动因素,利用NPP数据计算光合作用的过程中植被的碳固定能力。结果表明,江西省的碳固定能力在26.67亿~33.16亿t之间,呈现出中间低、四周高的分布格局。除市区外,大部分县域的碳固定能力均呈现增长趋势。相关性分析显示,人类活动在一定程度上降低了该地区的碳固定能力,生态环境指标中仅有耕地占比与单位面积固碳量及固碳变化率成反比,其余指标均成正比,第二产业的发展相对于第一产业和第三产业对固碳的影响更大。因此,江西省的固碳能力提升途径应着重应对城镇化导致的固碳能力降低。

Achieving the dual carbon goals has become an urgent task for us.In order to gain a deeper understanding of the carbon sequestration capacity,spatiotemporal variation patterns,and driving factors in Jiangxi province over the past 40 years of reform and opening up,the carbon sequestration capacity during the process of photosynthesis is calculated using NPP data.The results show that the carbon sequestration capacity in Jiangxi province ranges from 26.67 billion to 33.16 billion tons,exhibiting a distribution pattern of being low in the middle and high on the periphery.Except for urban areas,most counties have shown an increasing trend in carbon sequestration capacity.Correlation analysis indicates that human activities have to some extent reduced the region's carbon sequestration capacity.Among the ecological environmental indicators,only the proportion of arable land is inversely proportional to the carbon sequestration capacity per unit area and the rate of carbon sequestration.The rest of the indicators are positively correlated.The development of the secondary industry has a greater impact on carbon sequestration compared to the primary and tertiary industries.Therefore,the pathway to enhancing carbon sequestration capacity in Jiangxi province should focus on addressing the decrease in carbon sequestration capacity caused by urbanization.