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Table 1 Characteristics of the flux sites over grassland ecosystems in northern China

From: Remotely monitoring ecosystem respiration from various grasslands along a large-scale east–west transect across northern China

CodeSite nameLocationTemperature (°C)Precipitation (mm)Elevation (m)Vegetation typeHeightSoil typeYearsReferences
CN-CngChangling44.5934° N5400171Temperate meadow steppe0.75Alkali-saline soil2007–2010[56]
123.5092° E E
CN-NmgXilinhota43.5544° N23501250Typical steppe0.4Chestnut soil2004[57]
116.6714° E
CN-Du2Duolun fenced grassland42.0467° N1.73501350Typical steppe0.45Chestnut soil2006–2008[57]
116.2836° E
CN-HzzHuazhaizi38.76519° N7.51571726Desert steppe0.15Loam2014–2017[58]
100.3186° E
CN-Sw2Siziwang41.7781° N3.52831438Desert steppe0.15Loam2011[59]
111.8971° E
CN-HamHaibei37.6127° N− 1.75613216Alpine meadow0.3Clay loam2002–2003[60]
101.3128° E
CN-ArA’rou38.0473° N0.9403.13033Alpine meadow0.45Chestnut soil2013–2015[61]
CN-DsDashalong38.8399° N− 3.43193739Alpine meadow0.15Chestnut soil2014–2015This study
98.9606° E
CN-DanDangxiong30.4978° N1.34804333Alpine meadow0.1Sandy loam2004–2005[62]
91.0664° E
CN-TyTongyu degraded grasslanda44.5673° N5.5345.4151Temperate meadow steppe0.1Sand soil2008b–2009b[63]
122.9170° E
CN-MqMaqu33.8872° N1.95933443Alpine meadow0.25Silt clay loam2009b[64]
102.1407° E
  1. aRepresents vegetation type in degraded condition. bMeans that only part time of the year’s flux and climate data are measured at this site, generally during the growing season. Among the eleven eddy covariance flux sites, CN-Cng (2010), CN-Ar (2014), CN-Du2 (2008) and CN-Sw2 (2011) are used for validation as a proxy for temperate meadow steppe, Alpine meadow, typical steppe and desert steppe, respectively