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Comparison of Soil Greenhouse Gas Fluxes during the Spring Freeze-Thaw Period and the Growing Season in a Temperate Broadleaved Korean Pine Forest, Changbai Mountains, China

文献类型：期刊论文

作者Guo, Chuying2,3; Zhang, Leiming2; Li, Shenggong2; Li, Qingkang2; Dai, Guanhua1
刊名FORESTS
出版日期2020-11-01
卷号11期号:11页码:18
关键词soil GHG fluxes static-chamber method freeze– thaw cycle soil temperature soil volumetric water content temperate forest
DOI10.3390/f11111135
通讯作者Zhang, Leiming(zhanglm@igsnrr.ac.cn)
英文摘要Soils in mid-high latitudes are under the great impact of freeze-thaw cycling. However, insufficient research on soil CO2, CH4, and N2O fluxes during the spring freeze-thaw (SFT) period has led to great uncertainties in estimating soil greenhouse gas (GHG) fluxes. The present study was conducted in a temperate broad-leaved Korean pine mixed forest in Northeastern China, where soils experience an apparent freeze-thaw effect in spring. The temporal variations and impact factors of soil GHG fluxes were measured during the SFT period and growing season (GS) using the static-chamber method. The results show that the soil acted as a source of atmospheric CO2 and N2O and a sink of atmospheric CH4 during the whole observation period. Soil CO2 emission and CH4 uptake were lower during the SFT period than those during the GS, whereas N2O emissions were more than six times higher during the SFT period than that during the GS. The responses of soil GHG fluxes to soil temperature (T-s) and soil moisture during the SFT and GS periods differed. During the SFT period, soil CO2 and CH4 fluxes were mainly affected by the volumetric water content (VWC) and T-s, respectively, whereas soil N2O flux was influenced jointly by T-s and VWC. The dominant controlling factor for CO2 was T-s during the GS, whereas CH4 and N2O were mainly regulated by VWC. Soil CO2 and N2O fluxes accounted for 97.3% and 3.1% of the total 100-year global warming potential (GWP(100)) respectively, with CH4 flux offsetting 0.4% of the total GWP(100). The results highlight the importance of environmental variations to soil N2O pulse during the SFT period and the difference of soil GHG fluxes between the SFT and GS periods, which contribute to predicting the forest soil GHG fluxes and their global warming potential under global climate change.
WOS关键词NITROUS-OXIDE EMISSIONS ; METHANE UPTAKE ; N2O EMISSIONS ; ENVIRONMENTAL CONTROLS ; MICROBIAL COMMUNITIES ; AGROPASTORAL ECOTONE ; PRECIPITATION PULSES ; TROPICAL FOREST ; ORGANIC-CARBON ; CO2 EFFLUX
资助项目National Key R&D Program of China[2017YFC0503801] ; National Natural Science Foundation of China[31570446]
WOS研究方向Forestry
语种英语
WOS记录号WOS:000593146800001
出版者MDPI
资助机构National Key R&D Program of China ; National Natural Science Foundation of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/156429]  
专题中国科学院地理科学与资源研究所
通讯作者Zhang, Leiming
作者单位1.Chinese Acad Sci, Inst Appl Ecol, CAS Key Lab Forest Ecol & Management, Shenyang 110016, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Guo, Chuying,Zhang, Leiming,Li, Shenggong,et al. Comparison of Soil Greenhouse Gas Fluxes during the Spring Freeze-Thaw Period and the Growing Season in a Temperate Broadleaved Korean Pine Forest, Changbai Mountains, China[J]. FORESTS,2020,11(11):18.
APA Guo, Chuying,Zhang, Leiming,Li, Shenggong,Li, Qingkang,&Dai, Guanhua.(2020).Comparison of Soil Greenhouse Gas Fluxes during the Spring Freeze-Thaw Period and the Growing Season in a Temperate Broadleaved Korean Pine Forest, Changbai Mountains, China.FORESTS,11(11),18.
MLA Guo, Chuying,et al."Comparison of Soil Greenhouse Gas Fluxes during the Spring Freeze-Thaw Period and the Growing Season in a Temperate Broadleaved Korean Pine Forest, Changbai Mountains, China".FORESTS 11.11(2020):18.

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来源：地理科学与资源研究所

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