Response of greenhouse gas emissions from three types of wetland soils to simulated temperature change on the Qinghai-Tibetan Plateau

摘要: Abstract Wetlands emit a large quantity of greenhouse gases into the atmosphere and contribute significantly to global warming. The Qinghai-Tibetan Plateau, known as “Third Pole” earth, contains abundant diverse wetlands. Due increasing human-induced pressures such reclamation, overgrazing climate change, many plateau wetlands have been degraded or destroyed. Until now, response soil gas emissions extreme summer temperatures in remains unknown. In this study, we collected 36 samples from riverine, lacustrine palustrine on Plateau. We compared carbon dioxide (CO 2 ), methane (CH 4 ) nitrous oxide (N O) soils incubated aerobically at 7, 12, 19 °C. results showed that CH N O but not CO were affected by simulated temperature change. emission rate was considerably higher with riverine However, did differ among three wetland types. ratio production increased incubation temperatures. warming potential 19 °C approximately 1.18 2.12 times greater than 12 7 °C, respectively. Our findings suggest change has strong effect especially Therefore, targeted strategies should be developed mitigate impacts plateau.