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Table 1 Sampling dates and averaged environmental conditions during the samplings in 2017

From: Characteristics and chemical reactivity of biogenic volatile organic compounds from dominant forest species in the Jing-Jin-Ji area, China

Sampling Date

Binomial name

Region

aPAR (µmol·m− 2·s− 1)

bT (°C)

cRH (%)

08/23–08/24

Salix babylonica

(2)/(7)/(9)

938

32.5

23.7

08/29–08/31

Pinus tabuliformis

(1)/(5)/(9)/(11)

1963

33.1

23.9

08/29–08/31

Populus tomentosa

(1)/(4)/(5)/(7)/(8)

1369

34.0

27.2

07/29–07/31

Platycladus orientalis

(4)/(5)/(7)/(8)/(9)

1606

34.2

27.4

08/29–08/30

Robinia pseudoacacia

(5)/(7)/(13)

1206

32.8

23.2

06/20–06/21

Ulmus pumila

(2)/(4)/(7)

1537

37.1

23.6

06/05–06/07

Larix gmelinii

(1)/(4)/(5)/(6)/(10)

1629

29.1

19.9

07/01–07/02

Quercus variabilis

(8)/(9)/(12)

1059

34.5

22.6

07/27–07/28

Betula platyphylla

(1)/(3)/(10)/(12)/(13)

875

31.0

24.3

  1. (1)–(13): The specific name of sampling place is shown in the note of Fig. 1
  2. aPAR Photosynthetically active radiation
  3. bT Temperature in the bag
  4. cRH Relative humidity