生态科学2025，Vol.44Issue(3)：95-103,9.DOI:10.14108/j.cnki.1008-8873.2025.03.010
基于TEM的千烟洲森林生态系统碳动态模拟
Simulation of carbon dynamics in Qianyanzhou forest ecosystem based on TEM
摘要
Abstract
The forest ecosystem is an important component of terrestrial ecosystems,and investigating the dynamic changes of Net Ecosystem Productivity(NEP)in forest ecosystems and its control mechanisms is of great significance for studying the carbon sequestration capacity of terrestrial ecosystems.To explore the trends in NEP and its relationship with environmental factors in the Qianyanzhou forest ecosystem,the Terrestrial Ecosystem Model(TEM)was used to simulate the trends in NEP from 1976 to 2018.The contribution of different environmental factors to NEP was analyzed using a simulation experiment.The results showed that from 1976 to 2018,the NEP of the Qianyanzhou forest ecosystem exhibited an overall fluctuating upward trend.The mutation test results showed that there was a significant mutation in NEP in 1998.From 1976 to 1998,the NEP change rate was 9.01 g·m-2·a-1,while from 1998 to 2018,the NEP increase rate increased and the change rate was 15.80 g·m-2·a-1.The simulation experiment results showed that from 1976 to 1998,the contribution rates of CO2 concentration,temperature,precipitation,and radiation to NEP were 58.1%,-28.4%,3.2%,and 10.3%,respectively,while from 1998 to 2018,the contribution rates of these environmental factors were 66.6%,-23.4%,0.9%,and 9.1%,respectively.The increase in CO2 concentration was the main contributing factor to the rapid increase in NEP in the Qianyanzhou forest ecosystem.关键词
千烟洲森林生态系统/净生态系统生产力/TEM/气候变化Key words
Qianyanzhou forest ecosystem/net ecosystem productivity/TEM/climate change分类
资源环境引用本文复制引用
刘杰,汲玉河,周梦子,周广胜,李成龙..基于TEM的千烟洲森林生态系统碳动态模拟[J].生态科学,2025,44(3):95-103,9.基金项目
国家自然科学基金项目(42141007) （42141007）
中国气象科学研究院科研业务项目(2023Z023) （2023Z023）
