School of Arts and Communication, China University of Geosciences, Wuhan 430074, China.
Faculty of Fine Art, University of Barcelona, 08028 Barcelona, Spain.
Int J Environ Res Public Health. 2022 Mar 31;19(7):4175. doi: 10.3390/ijerph19074175.
As an important carbon sink indicator, the vegetation net primary productivity (NPP) is key and helpful for understanding regional carbon sequestration and storage of mining areas. Systematic analysis of NPP of the ecological reconstruction process in mining areas can effectively contribute to local governments and related departments for making ecological decisions under the "double carbon goals" ("peak of carbon release" and "carbon neutrality") and help to promote regional sustainable development. In this study, we used the CASA model to systematically assess the temporal and spatial evolution characteristics of NPP of Huangshi City from 1990 to 2018. Meanwhile, various scenarios were set up to study the effects of climate factors, landscape pattern evolution, and ecological restoration on regional carbon storage. Our results documented that (1) NPP of the study area an increasing trend from 1990-2018 shows and exhibits significant spatial heterogeneity; (2) the significant increase of NPP was mainly in the restored mining areas, indicating that the ecological restoration of mining areas can effectively improve the regional carbon sequestration capacity; (3) from 1990 to 2018, climate change released 0.136 TgC, while landscape pattern change contributed to carbon storage with 0.266 TgC; and (4) the restoration and reconstruction of vegetation in the mining areas is an important way to achieve carbon neutrality of Huangshi City in the future, and the changes of NPP varied among different ecological restoration modes.
作为一个重要的碳汇指标，植被净初级生产力（NPP）对于理解矿区的区域碳固存和储存至关重要。系统分析矿区生态重建过程中的 NPP，可以为当地政府和相关部门在“双碳目标”（“碳达峰”和“碳中和”）下做出生态决策提供有效帮助，并有助于促进区域可持续发展。在本研究中，我们使用 CASA 模型系统评估了 1990 年至 2018 年黄石市 NPP 的时空演变特征。同时，设置了各种情景来研究气候因素、景观格局演变和生态恢复对区域碳储存的影响。我们的研究结果表明：（1）研究区的 NPP 从 1990 年至 2018 年呈上升趋势，表现出显著的空间异质性；（2）NPP 的显著增加主要发生在已恢复的矿区，表明矿区的生态恢复可以有效提高区域的碳固存能力；（3）1990 年至 2018 年，气候变化释放了 0.136 TgC，而景观格局变化则有助于碳储存，贡献了 0.266 TgC；（4）矿区植被的恢复和重建是未来实现黄石市碳中和的重要途径，不同生态恢复模式下 NPP 的变化也有所不同。
