Contrasting responses after fires of the source components of soil respiration and ecosystem respiration

被引：14

作者：

Chen, Ji ^{[1
,2
,3
,4
]}

Zhang, Yuefang ^{[5
]}

Luo, Yiqi ^{[6
,7
,8
]}

Zhou, Xuhui ^{[9
,10
]}

Jiang, Yu ^{[11
]}

Zhao, Jin ^{[4
]}

Chen, Yizhao ^{[12
]}

Wang, Chao ^{[3
]}

Guo, Liang ^{[13
]}

Cao, Junji ^{[1
,2
,14
]}

机构：

[1] Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Shaanxi, Peoples R China

[2] Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Shaanxi, Peoples R China

[3] Northwestern Polytech Univ, Ctr Ecol & Environm Sci, Key Lab Space Biosci & Biotechnol, Xian 710072, Shaanxi, Peoples R China

[4] Aarhus Univ, Ctr Circular Bioecon, Dept Agroecol, Tjele, Denmark

[5] Jiangsu Acad Agr Sci, Circular Agr Res Ctr, Nanjing, Jiangsu, Peoples R China

[6] No Arizona Univ, Dept Biol Sci, Ctr Ecosyst Sci & Soc, Box 5640, Flagstaff, AZ 86011 USA

[7] No Arizona Univ, Dept Biol Sci, Box 5640, Flagstaff, AZ 86011 USA

[8] Tsinghua Univ, Dept Earth Syst Sci, Beijing, Peoples R China

[9] East China Normal Univ, Sch Ecol & Environm Sci, Tiantong Natl Field Observat Stn Forest Ecosyst, Shanghai, Peoples R China

[10] East China Normal Univ, Ctr Global Change & Ecol Forecasting, Shanghai, Peoples R China

[11] Chinese Acad Agr Sci, Inst Crop Sci, Beijing, Peoples R China

[12] Nanjing Forestry Univ, Coll Biol & Environm, Joint Innovat Ctr Modern Forestry Studies, Nanjing, Jiangsu, Peoples R China

[13] Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China

[14] Xi An Jiao Tong Univ, Inst Global Environm Change, Xian, Shaanxi, Peoples R China

来源：

EUROPEAN JOURNAL OF SOIL SCIENCE | 2019年 / 70卷 / 03期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

autotrophic respiration; ecosystem respiration; fire disturbance; heterotrophic respiration; microbial biomass; plant functional types; plant productivity; soil respiration; MICROBIAL BIOMASS; CARBON-DIOXIDE; GRASSLAND; VARIABILITY; FORESTS; PLANT; DECOMPOSITION; PRODUCTIVITY; DECREASES; EMISSIONS;

D O I：

10.1111/ejss.12786

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Wildfire is an important ecological disturbance that can have cascading effects on ecosystem carbon (C) fluxes. Ecosystem respiration (ER) and soil respiration (SR) account for two of the largest terrestrial C fluxes to the atmosphere, and they play critical roles in regulating C-climate feedbacks. Here, the responses of ER, SR and their source components to experimental burning in a meadow grassland on the Tibetan Plateau were investigated. Fire treatment increased ER by 9% but decreased SR by 15%. The contrasting post-fire responses of SR and ER can be explained by the behaviour of their source components; that is, fire increased aboveground plant respiration (R-agb) by 37%, but decreased heterotrophic respiration (HR) by 21%. Increases in ER and R-agb were mainly related to enhanced plant productivity, whereas smaller SR and HR were associated with reductions in microbial biomass and soil moisture. Accounting for the responses of ER, SR and their intrinsic components has advanced our understanding of how fire affects ecosystem C fluxes.

引用

页码：616 / 629

页数：14

共 45 条

[1] Effect of fire on soil-atmosphere exchange of methane and carbon dioxide in Canadian boreal forest sites
Burke, RA
Zepp, RG
Tarr, MA
Miller, WL
Stocks, BJ
[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 1997, 102 (D24) : 29289 - 29300
[2] Tropical rainforest carbon sink declines during EI Nino as a result of reduced photosynthesis and increased respiration rates
Cavaleri, Molly A.
Coble, Adam P.
Ryan, Michael G.
Bauerle, William L.
Loescher, Henry W.
Oberbauer, Steven F.
[J]. NEW PHYTOLOGIST, 2017, 216 (01) : 136 - 149
[3] Effects of fire on properties of forest soils: a review
Certini, G
[J]. OECOLOGIA, 2005, 143 (01) : 1 - 10
[4] Differential responses of carbon-degrading enzyme activities to warming: Implications for soil respiration
Chen, Ji
Luo, Yiqi
Garcia-Palacios, Pablo
Cao, Junji
Dacal, Marina
Zhou, Xuhui
Li, Jianwei
Xia, Jianyang
Niu, Shuli
Yang, Huiyi
Shelton, Shelby
Guo, Wei
van Groenigen, Kees Jan
[J]. GLOBAL CHANGE BIOLOGY, 2018, 24 (10) : 4816 - 4826
[5] Divergent responses of ecosystem respiration components to livestock exclusion on the Qinghai Tibetan Plateau
Chen, Ji
Luo, Yiqi
Xia, Jianyang
Zhou, Xuhui
Niu, Shuli
Shelton, Shelby
Guo, Wei
Liu, Suixin
Dai, Wenting
Cao, Junji
[J]. LAND DEGRADATION & DEVELOPMENT, 2018, 29 (06) : 1726 - 1737
[6] Warming Effects on Ecosystem Carbon Fluxes Are Modulated by Plant Functional Types
Chen, Ji
Luo, Yiqi
Xia, Jianyang
Wilcox, Kevin R.
Cao, Junji
Zhou, Xuhui
Jiang, Lifen
Niu, Shuli
Estera, Katerina Y.
Huang, Rujin
Wu, Feng
Hu, Tafeng
Liang, Junyi
Shi, Zheng
Guo, Jianfen
Wang, Rui-Wu
[J]. ECOSYSTEMS, 2017, 20 (03) : 515 - 526
[7] Asymmetric Diurnal and Monthly Responses of Ecosystem Carbon Fluxes to Experimental Warming
Chen, Ji
Zhou, Xuhui
Hruska, Tracy
Cao, Junji
Zhang, Baocheng
Liu, Chen
Liu, Min
Shelton, Shelby
Guo, Liang
Wei, Yonglin
Wang, Junfeng
Xiao, Shun
Wang, Ping
[J]. CLEAN-SOIL AIR WATER, 2017, 45 (03)
[8] Differential responses of ecosystem respiration components to experimental warming in a meadow grassland on the Tibetan Plateau
Chen, Ji
Luo, Yiqi
Xia, Jianyang
Shi, Zheng
Jiang, Lifen
Niu, Shuli
Zhou, Xuhui
Cao, Junji
[J]. AGRICULTURAL AND FOREST METEOROLOGY, 2016, 220 : 21 - 29
[9] Stronger warming effects on microbial abundances in colder regions
Chen, Ji
Luo, Yiqi
Xia, Jianyang
Jiang, Lifen
Zhou, Xuhui
Lu, Meng
Liang, Junyi
Shi, Zheng
Shelton, Shelby
Cao, Junji
[J]. SCIENTIFIC REPORTS, 2015, 5
[10] Covington WW, 2000, NATURE, V408, P135

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