Table 4 Environmental Variables for the TEM.

From: Grassland Carbon Budget and Its Driving Factors of the Subtropical and Tropical Monsoon Region in China During 1961 to 2013

Type

Data Name

Code

Unit

Time

Data Characteristics

Source

Location

Longitude

Lon

degree

constant

Longitude and latitude of meteorological stations

Latitude

Lat

degree

constant

Longitude and latitude of meteorological stations

Altitude

Above sea surface

ELEV

m

constant

Altitude above sea surface of Meteorological Stations

Climate

Precipitation

PRECIP

mm

1961–2013

monthly

Meteorological data sharing network

Temperature

TAIR

°C

1961–2013

monthly

Meteorological data sharing network

Cloud Amount

CLDS

%

1981–2010

monthly

Meteorological data sharing network

Radiation

NIRR

W m-2

1961–2013

monthly

Meteorological data sharing network

CO2 Concentration

 

ppm

1961–2013

annual

NOAA published

Soil

Sand

PCTSAND

%

multi-year

constant

Second soil investigation

Clay

PCTSILT

%

multi-year

constant

Second soil investigation

Silt

PCTCLAY

%

multi-year

constant

Second soil investigation

Vegetation

Vegetation Type

TEMVEG

multi-year

constant

Grassland investigation