南京林业大学学报（自然科学版）2024，Vol.48Issue(5)：11-20,10.
基于Biome-BGC模型的浙江凤阳山针阔混交林碳动态模拟
Carbon dynamic simulation based on Biome-BGC model in mixed coniferous and broadleaved forest of Fengyang Mountain,Zhejiang Province
摘要
Abstract
[Objective]This study aims to investigate the carbon dynamics of subtropical mixed coniferous and broadleaved forests in Fengyang Mountain,Zhejiang Province and their response to climate change.[Method]The Biome-BGC model was used to simulate the net primary productivity(NPP),gross primary productivity(GPP),and net ecosystem productivity(NEP)in Fengyang Mountain from 1979 to 2018,to investigate the relationships between climate factors and NPP at different time scales.Pearson correlation analysis and quadratic function fitting were performed between climate factors and NPP at different temporal scales to explore the relationship and response patterns between NPP and major climate factors,and finally,different climate scenarios were applied to predict the carbon cycling trends in Fengyang Mountain in the next 100 years.[Result]The average values of GPP,NPP and NEP of mixed coniferous and broadleaved forests in Fengyang Mountain for 40 years were 1 392.94,451.25 and 16.21 g/(m2·a),respectively.Except for 1984,2002,2005,2008 and 2010,which were carbon sinks and showed that the sensitivity of NPP to temperature change was the highest,and the increase of temperature in summer had a positive effect on the increase of NPP,while the increase of temperature in winter had a negative effect on NPP.To a certain extent,winter rainfall showed a positive effect on NPP,while summer precipitation showed a negative effect on NPP.The gross primary productivity of Fengyang Mountain forests in RCP2.6,RCP4.5 and RCP6.0 scenarios will keep increasing in the 21st century,and by 2100,the GPP of the studied forests in Fengyang Mountain under RCP2.6,RCP4.5 and RCP6.0 scenarios will reach 1 552.73,1 660.30 and 1 960.41 g/(m2·a),respectively,and get increased 1.38%,8.41%and 28.00%relative to the GPP in 2018.[Conclusion]Overall,the forest ecosystem of Fengyang Mountain exhibited carbon sinks under normal conditions,but the cloudy and rainy summer weather in the mountainous area inhibited the increasing effect of temperature on carbon sinks to some extent.The future warming,increased rainfall and higher CO2 concentration simultaneously will favor the vegetation growth of mixed coniferous forests in Fengyang Mountain.关键词
针阔混交林/Biome-BGC模型/碳动态/气候变化/浙江凤阳山Key words
mixed coniferous and broadleaved forest/Biome-BGC model/carbon dynamics/climate change/Fengyang Mountain of Zhejiang Province分类
农业科技引用本文复制引用
黄璐瑶,杜珊凤,纪小芳,管鑫,刘胜龙,叶丽敏,姜姜..基于Biome-BGC模型的浙江凤阳山针阔混交林碳动态模拟[J].南京林业大学学报（自然科学版）,2024,48(5):11-20,10.基金项目
百山祖国家公园科学研究项目(2022JBGS03,2021ZDLY01) （2022JBGS03,2021ZDLY01）
国家自然科学基金项目(32071612) （32071612）
江苏省碳达峰碳中和科技创新专项(BE2022307). （BE2022307）
