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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

Code

Site name

Location

Temperature (°C)

Precipitation (mm)

Elevation (m)

Vegetation type

Height

Soil type

Years

References

(m)

CN-Cng

Changling

44.5934° N

5

400

171

Temperate meadow steppe

0.75

Alkali-saline soil

2007–2010

[56]

123.5092° E E

CN-Nmg

Xilinhota

43.5544° N

2

350

1250

Typical steppe

0.4

Chestnut soil

2004

[57]

116.6714° E

CN-Du2

Duolun fenced grassland

42.0467° N

1.7

350

1350

Typical steppe

0.45

Chestnut soil

2006–2008

[57]

116.2836° E

CN-Hzz

Huazhaizi

38.76519° N

7.5

157

1726

Desert steppe

0.15

Loam

2014–2017

[58]

100.3186° E

CN-Sw2

Siziwang

41.7781° N

3.5

283

1438

Desert steppe

0.15

Loam

2011

[59]

111.8971° E

CN-Ham

Haibei

37.6127° N

− 1.7

561

3216

Alpine meadow

0.3

Clay loam

2002–2003

[60]

101.3128° E

CN-Ar

A’rou

38.0473° N

0.9

403.1

3033

Alpine meadow

0.45

Chestnut soil

2013–2015

[61]

100.4643°E

CN-Ds

Dashalong

38.8399° N

− 3.4

319

3739

Alpine meadow

0.15

Chestnut soil

2014–2015

This study

98.9606° E

CN-Dan

Dangxiong

30.4978° N

1.3

480

4333

Alpine meadow

0.1

Sandy loam

2004–2005

[62]

91.0664° E

CN-Ty

Tongyu degraded grasslanda

44.5673° N

5.5

345.4

151

Temperate meadow steppe

0.1

Sand soil

2008b–2009b

[63]

122.9170° E

CN-Mq

Maqu

33.8872° N

1.9

593

3443

Alpine meadow

0.25

Silt clay loam

2009b

[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