Table 2 The top 5 herbs with relative importance value in different months

May

Anemone raddeana

18.11

Carex pilosa

18.93

Carex pilosa

17.53

Filipendula palmata

12.92

Hylomecon japonica

9.96

Anemone raddeana

14.47

Anemone raddeana

12.04

Aegopodium alpestre

12.32

Aegopodium alpestre

9.47

Filipendula palmata

8.89

Filipendula palmata

8.35

Anemone raddeana

9.38

Meehania urticifolia

7.23

Meehania urticifolia

4.48

Meehania urticifolia

7.35

Anemone amurensis

6.84

Corydalis ambigua

6.61

Cardamine leucantha

4.44

Poa annua

4.09

Meehania urticifolia

4.63

Others

48.62

Others

48.79

Others

50.64

Others

53.91

June

Carex pilosa

14.39

Carex pilosa

28.14

Carex pilosa

26.63

Carex pilosa

19.29

Poa annua

9.87

Athyrium multidentatum

8.92

Meehania urticifolia

9.26

Filipendula palmata

10.94

Meehania urticifolia

9.87

Aegopodium alpestre

8.90

Carex remotiuscula

8.68

Aegopodium alpestre

10.33

Aegopodium alpestre

8.73

Filipendula palmata

8.07

Aegopodium alpestre

8.18

Carex remotiuscula

8.42

Filipendula palmata

8.02

Brachybotrys paridiformis

5.89

Filipendula palmata

5.35

Meehania urticifolia

7.24

Others

49.12

Others

40.08

Others

41.90

Others

43.78

July

Carex pilosa

16.27

Carex pilosa

35.84

Carex pilosa

27.52

Carex pilosa

27.76

Laportea bulbifera

10.98

Filipendula palmata

9.67

Filipendula palmata

8.42

Filipendula palmata

15.34

Filipendula palmata

9.77

Aegopodium alpestre

5.62

Carex remotiuscula

7.35

Aegopodium alpestre

7.96

Cardamine leucantha

9.74

Matteuccia struthiopteris

5.21

Meehania urticifolia

5.92

Meehania urticifolia

5.55

Meehania urticifolia

9.57

Anemone amurensis

4.33

Aegopodium alpestre

5.73

Carex remotiuscula

3.64

Others

43.67

Others

39.33

Others

45.06

Others

39.75

August

Milium effusum

14.43

Carex pilosa

24.45

Carex pilosa

22.99

Carex pilosa

16.56

Meehania urticifolia

13.26

Aegopodium alpestre

10.54

Meehania urticifolia

10.69

Aegopodium alpestre

10.99

Carex pilosa

11.93

Filipendula palmata

10.20

Aegopodium alpestre

10.26

Filipendula palmata

10.59

Aegopodium alpestre

10.30

Brachybotrys paridiformis

7.34

Filipendula palmata

9.67

Carex callitrichos

9.64

Filipendula palmata

10.25

Meehania urticifolia

5.73

Brachybotrys paridiformis

5.81

Meehania urticifolia

6.38

Others

39.83

Others

41.74

Others

40.58

Others

45.84

September

Carex pilosa

17.66

Carex pilosa

33.06

Carex pilosa

27.94

Carex pilosa

22.89

Aegopodium alpestre

16.34

Aegopodium alpestre

11.01

Meehania urticifolia

11.90

Filipendula palmata

16.76

Milium effusum

12.75

Filipendula palmata

10.79

Aegopodium alpestre

10.64

Aegopodium alpestre

16.64

Meehania urticifolia

12.46

Athyrium multidentatum

7.93

Filipendula palmata

9.67

Urtica angustifolia

16.28

Cardamine leucantha

8.76

Carex remotiuscula

6.88

Athyrium multidentatum

5.61

Meehania urticifolia

5.67

Others

32.03

Others

30.33

Others

34.24

Others

21.76

October

Carex pilosa

40.12

Carex pilosa

58.27

Carex pilosa

47.63

Carex pilosa

39.57

Meehania urticifolia

21.20

Aegopodium alpestre

15.78

Aegopodium alpestre

19.20

Aegopodium alpestre

17.47

Aegopodium alpestre

17.57

Meehania urticifolia

10.89

Carex remotiuscula

14.91

Carex callitrichos

13.60

Milium effusum

8.08

Carex callitrichos

5.38

Meehania urticifolia

10.24

Meehania urticifolia

8.86

Cardamine leucantha

5.68

Filipendula palmata

4.20

Carex callitrichos

2.93

Carex remotiuscula

8.60

Others

7.35

Others

5.48

Others

5.09

Others

11.90