Post-fire co-stimulation of gross primary production and ecosystem respiration in a meadow grassland on the Tibetan Plateau

doi:10.1016/j.agrformet.2021.108388

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, Dong 1; Chen, Ji 2,3,4; Felton, Andrew J.5,6,7; Xia, Longlong 8; Zhang, Yuefang 9; Luo, Yiqi 10; Cheng, Xiaoli 11; Cao, Junji 2,3,12
通讯作者	Chen, Ji(ji.chen.eco@gmail.com) ; Cheng, Xiaoli(xlcheng@fudan.edu.cn) ; Cao, Junji(jjcao@mail.iap.ac.cn)
	2021-06-15
发表期刊	AGRICULTURAL AND FOREST METEOROLOGY
ISSN	0168-1923
卷号	303 页码:12
摘要	Predicting 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.
关键词	Prescribed 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
DOI	10.1016/j.agrformet.2021.108388
收录类别	SCI ; SCI
语种	英语
资助项目	Aarhus University Research Foundation AUFF Starting Grants[AUFF-E-2019-7-1] ; Marie Sklodowska-Curie Individual Fellowship H2020-MSCA-IF-2018[839806]
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
项目资助者	Aarhus University Research Foundation AUFF Starting Grants ; Marie Sklodowska-Curie Individual Fellowship H2020-MSCA-IF-2018
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000639140200020
出版者	ELSEVIER
引用统计	被引频次：13[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/16318
专题	粉尘与环境研究室
通讯作者	Chen, Ji; Cheng, Xiaoli; Cao, Junji
作者单位	1.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
推荐引用方式 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.