浙江农林大学学报2024，Vol.41Issue(5)：919-927,9.DOI:10.11833/j.issn.2095-0756.20240141
浙江省丽水市森林碳汇时空演变及对极端降水的响应
Spatiotemporal evolution of forest carbon sink in Lishui City and its response to extreme precipitation
摘要
Abstract
[Objective]The objective is to simulate and analyze the spatiotemporal evolution trend of forest net ecosystem productivity(NEP)in Lishui City,and reveal its response mechanism to extreme precipitation,so as to provide data support for spatiotemporal assessment of forest carbon sink potential in Lishui.[Method]The spatiotemporal pattern of forest NEP in Lishui from 1979 to 2079 was simulated under three climate scenarios(RCP 2.6,RCP 4.5,and RCP 8.5)by integrating plot survey,remote sensing observation and InTEC model.The spatiotemporal characteristics of extreme precipitation were analyzed and a structural equation model was constructed to explore the impact of extreme precipitation on NEP.[Result](1)The frequency and intensity of extreme precipitation in Lishui during 1979-2015 showed an increasing trend.In the future climate scenario(except RCP 2.6),the extreme precipitation,frequency and intensity of RCP 4.5 and RCP 8.5 would continue to increase,with a higher trend of extreme precipitation events in areas such as Liandu District,Jinyun County and Jingning She Autonomous County.(2)Forest NEP showed an increasing trend from 1979 to 2015,with a growth rate of 20.18 g·m-2·a-1.From 2016 to 2079,forest NEP showed a downward trend under the three climate scenarios,but the total carbon sink showed an increasing trend,with the maximum NEP accumulation reaching 10.97 Pg.(3)From 1979 to 2015,extreme precipitation had positive effects on NEP,while it had negative impacts on NEP under the other two scenarios(RCP 4.5 and RCP 8.5)during 2016-2079,except for RCP 2.6 scenario under which extreme precipitation had no significant effect on NEP.However,extreme precipitation under RCP 8.5 had less impact on NEP than that under RCP 4.5.[Conclusion]Forests in Lishui demonstrate strong carbon sink capacity,and have high carbon sink potential under future climate scenarios.However,the impact of extreme precipitation on NEP should not be ignored.[Ch,5 fig.22 ref.]关键词
极端降水/森林碳汇/净生态系统生产力(NEP)/InTEC模型/浙江省丽水市Key words
extreme precipitation/forest carbon sink/net ecosystem productivity(NEP)/InTEC model/Lishui City of Zhejiang Province分类
农业科技引用本文复制引用
杨宁馨,毛方杰,杜华强,李雪建,孙佳倩,赵吟吟,郑兆东,腾先锋,叶峰峰..浙江省丽水市森林碳汇时空演变及对极端降水的响应[J].浙江农林大学学报,2024,41(5):919-927,9.基金项目
百山祖国家公园科学研究项目(2022JBGS02) （2022JBGS02）
浙江省科技厅"领雁"项目(2023C02035) （2023C02035）
国家自然科学基金资助项目(32171785,31901310) （32171785,31901310）
