Effects of drought on optimum temperature of carbon fluxes in temperate grasslands
Bibliographic Data
| ID | 15546273 |
|---|---|
| Authors | Tiancheng Su (0009-0004-9259-4500, corresponding author), Yanbing Wang (0000-0001-7197-4759), Cuihai You (0000-0001-5936-7331), Xingguo Han (0000-0002-1836-975X), Shiping Chen (0000-0002-1934-2372) |
| Year | 2024 |
| Volume | 19 |
| Issue | 12 |
| Pages | 124099-124099 |
| Publication date | 2024-11-21 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Environmental Research Letters (JOURNAL) |
| Journal identifiers | ISSN: 1748-9326 • E-ISSN: 1748-9326 |
| Publisher | IOP Publishing (PUBLISHER • GB) |
| DOI | 10.1088/1748-9326/ad9507 |
| OpenAlex | W4404591891 |
| Language | EN |
| References cited | 45 |
Ecosystem carbon flux components, including ecosystem gross primary productivity (GPP), ecosystem respiration (ER), and net ecosystem productivity (NEP), are the most direct indicators of ecosystem production capacity, carbon sequestration, and climate regulation strength. Nevertheless, little is known about how water availability affects the temperature responses of carbon flux components in water-limited ecosystems. Based on a long-term eddy observation dataset of temperate grasslands in northern China, we analyzed the effects of drought on the optimum temperature of carbon flux components ( T opt flux ) in temperate grassland ecosystems and clarified the relative contributions of vegetation and climate factors to T opt flux . We found that the optimum temperatures of carbon flux components were widespread across different grassland types, with a significant lower optimum temperature of NEP ( T opt NEP , 17.32 ± 3.21 °C) than that of GPP ( T opt GPP , 18.67 ± 2.53 °C) and ER ( T opt ER , 19.30 ± 1.94 °C). Drought significantly reduced T opt NEP , but had no significant effects on T opt GPP and T opt ER . Obvious shifts of occurrence date of T opt flux were also observed in the years with different precipitation regimes. That is, T opt </m
Atmospheric sciences · Biology · Carbon dioxide · Carbon sequestration · Ecosystem · Ecosystem respiration · Eddy covariance · Flux (metallurgy · Geography · Grassland · Meteorology · Physics · Precipitation · Primary production · Productivity · Temperate climate · Atmospheric and Environmental Gas Dynamics · Chemistry · Climate variability and models · Environmental Science · Plant Water Relations and Carbon Dynamics · Ecology
| Highly cited | No |
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