title: Diurnal characteristics of ecosystem respiration of alpine meadow on the Qinghai-Tibetan Plateau: implications for carbon budget estimation.
abstract: Accurately estimating daily mean ecosystem respiration rate (Re) is important for understanding how ecosystem carbon budgets will respond to climate change. Usually, daily mean Re is represented by measurement using static chamber on alpine meadow ecosystems from 9:00 to 11:00 h a.m. local time directly. In the present study, however, we found that the calculated daily mean Re from 9:00 to 11:00 h a.m. local time was significantly higher than that from 0:00 to 23:30 h local time in an alpine meadow site, which might be caused by special climate condition on the Qinghai-Tibetan Plateau. Our results indicated that the calculated daily mean Re from 9:00 to 11:00 h a.m. local time cannot be used to represent daily mean Re directly.
authors.affiliation: State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Qin
authors.forename: Shuhua
authors.initials: S
authors.lastname: Yi
mesh_terms: D002681:China; D002940:Circadian Rhythm / Q000502:physiology*; D057231:Climate Change; D017753:Ecosystem; D004784:Environmental Monitoring / Q000379:methods*; D057232:Global Warming; D010788:Photosynthesis / Q000502:physiology*; D018521:Plant Physiological Phenomena; D012987:Soil / Q000737:chemistry*; D018609:Tibet
chemical_list: D012987:Soil