IEECAS OpenIR  > 粉尘与环境研究室
Post-fire co-stimulation of gross primary production and ecosystem respiration in a meadow grassland on the Tibetan Plateau
Wang, Dong1; Chen, Ji2,3,4; Felton, Andrew J.5,6,7; Xia, Longlong8; Zhang, Yuefang9; Luo, Yiqi10; Cheng, Xiaoli11; Cao, Junji2,3,12
Corresponding AuthorChen, Ji(ji.chen.eco@gmail.com) ; Cheng, Xiaoli(xlcheng@fudan.edu.cn) ; Cao, Junji(jjcao@mail.iap.ac.cn)
2021-06-15
Source PublicationAGRICULTURAL AND FOREST METEOROLOGY
ISSN0168-1923
Volume303Pages:12
AbstractPredicting post-fire ecosystem CO2 exchange requires an explicit understanding of the sensitivity of gross primary production (GPP), ecosystem respiration (ER) and net ecosystem exchange (NEE) to post-fire conditions. However, the simultaneous effects of fire on GPP, ER and NEE are rarely evaluated. We established a three-year manipulative fire experiment in a meadow grassland on the Tibetan Plateau to investigate the responses of GPP, ER and NEE to prescribed fire. We found that fire on average increased GPP by 13% and ER by 9%, leading to an increase in NEE by 20% across the three years. There was no clear relationship between post-fire changes in soil temperature and ecosystem CO2 exchange, yet reductions in soil volumetric moisture were positively related to changes in GPP, ER and NEE. These results suggest that post-fire stimulation of GPP, ER and NEE cannot be fully explained by changes in soil temperature and soil moisture. Besides, changes in GPP, ER and NEE were positively related to fire-induced increases in graminoid biomass, legume biomass and soil inorganic nitrogen. Taken together, our results suggest the interwoven control of biotic and abiotic factors on post-fire GPP, ER and NEE, yet also that shifts in plant functional type biomass may outweigh the negative effects of reduced soil moisture on ecosystem CO2 exchange. These results underscore how simultaneous documentation of GPP, ER and NEE dynamics can advance a mechanistic understanding of CO2 exchange under fire disturbance.
KeywordPrescribed fire Gross primary production Ecosystem respiration Net ecosystem exchange Plant community composition Microbial biomass Soil inorganic nitrogen Soil temperature Soil volumetric moisture Meadow grassland Tibetan Plateau
DOI10.1016/j.agrformet.2021.108388
Indexed BySCI ; SCI
Language英语
Funding ProjectAarhus University Research Foundation AUFF Starting Grants[AUFF-E-2019-7-1] ; Marie Sklodowska-Curie Individual Fellowship H2020-MSCA-IF-2018[839806]
WOS Research AreaAgriculture ; Forestry ; Meteorology & Atmospheric Sciences
Funding OrganizationAarhus University Research Foundation AUFF Starting Grants ; Marie Sklodowska-Curie Individual Fellowship H2020-MSCA-IF-2018
WOS SubjectAgronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS IDWOS:000639140200020
PublisherELSEVIER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/16318
Collection粉尘与环境研究室
Corresponding AuthorChen, Ji; Cheng, Xiaoli; Cao, Junji
Affiliation1.Henan Univ, Sch Life Sci, Int Joint Res Lab Global Change Ecol, Kaifeng 475004, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol SKLLQG, Xian 710061, Peoples R China
3.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China
4.Aarhus Univ, Ctr Circular Bioecon, Dept Agroecol, DK-8830 Tjele, Denmark
5.Utah State Univ, Dept Wildland Resources, Logan, UT 84322 USA
6.Utah State Univ, Ecol Ctr, Logan, UT 84322 USA
7.Chapman Univ, Schmid Coll Sci & Technol, Orange, CA 92866 USA
8.Karlsruhe Inst Technol, Inst Meteorol & Climate Res IMK IFU, D-82467 Garmisch Partenkirchen, Germany
9.Jiangsu Acad Agr Sci, Key Lab Agroenvironm Downstream Yangtze Plain, Minist Agr & Rural Affairs, Nanjing 210014, Peoples R China
10.No Arizona Univ, Ctr Ecosyst Sci & Soc, Dept Biol Sci, Flagstaff, AZ 86011 USA
11.Yunnan Univ, Sch Ecol & Environm Sci, Kunming 650091, Yunnan, Peoples R China
12.Chinese Acad Sci, Inst Atmospher Phys, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Wang, Dong,Chen, Ji,Felton, Andrew J.,et al. Post-fire co-stimulation of gross primary production and ecosystem respiration in a meadow grassland on the Tibetan Plateau[J]. AGRICULTURAL AND FOREST METEOROLOGY,2021,303:12.
APA Wang, Dong.,Chen, Ji.,Felton, Andrew J..,Xia, Longlong.,Zhang, Yuefang.,...&Cao, Junji.(2021).Post-fire co-stimulation of gross primary production and ecosystem respiration in a meadow grassland on the Tibetan Plateau.AGRICULTURAL AND FOREST METEOROLOGY,303,12.
MLA Wang, Dong,et al."Post-fire co-stimulation of gross primary production and ecosystem respiration in a meadow grassland on the Tibetan Plateau".AGRICULTURAL AND FOREST METEOROLOGY 303(2021):12.
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