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Table 1 Information of the E. ulmoides leaves samples

From: A method of two-dimensional correlation spectroscopy combined with residual neural network for comparison and differentiation of medicinal plants raw materials superior to traditional machine learning: a case study on Eucommia ulmoides leaves

Region

Collection site

Elevation (m)

Latitude (N)

Longitude (E)

Numbers

40℃

60℃

Shade drying

Sun drying

Total

Guizhou

Shangji Town, Bozhou District, Zunyi City, Guizhou Province

857

27°24′ 04.63′′

106°57′ 42.17′′

40

10

10

10

10

121

Gaoqiao Town, Huichuan District, Zunyi City, Guizhou Province

946

27°43′ 29.82′′

106°52′ 49.39′′

40

10

10

10

10

Xiangkou Town, Honghuagang District, Zunyi City, Guizhou Province

925

27◦38′ 42.25′′

106°53′ 35.42′′

41

11

10

10

10

Henan

Liujiahe Town, Xingyang City, Henan Province

252

34°04′ 21.02′′

113°12′ 52.28′′

39

10

10

9

10

119

Jingya Forest Farm, Cili County, Zhangjiajie City, Hunan Province

420

34°43′ 10.21′′

113°17′ 18.14′′

40

10

10

10

10

Zhaiyang Township, Jishou City, Hunan Province

334

29°31′ 22.69′′

110°46′ 02.50′′

40

10

10

10

10

Hubei

Muyu Town, Shennongjia Forestry District, Hubei Province

1343

31°28′ 44.43′′

110°22′ 43.08′′

12

3

3

3

3

64

Xiangfan District, Xiangyang city, Hubei province

78

32°00′ 56.49′′

112◦09′ 59.91′′

40

10

10

10

10

Guanmenshan Town, Shennongjia Forestry District, Hubei Province

1247

31°26′ 55.95′′

110°23′ 89.11′′

12

3

3

3

3

Hunan

Jingya Forest Farm, Cili County, Zhangjiajie City, Hunan Province

334

29°31′ 22.69′′

110°46′ 02.50′′

40

10

10

10

10

79

Zhaiyang Township, Jishou City, Hunan Province

285

28°18′ 17.38′′

109°38′ 13.42′′

39

10

10

10

9

Jiangxi

Yinhe Town, Luxi County, Pingxiang City, Jiangxi Province

150

27°41′ 55.96′′

114°05′ 49.77′′

39

11

9

9

9

39

Shaanxi

Jinjiahe Town, Lueyang County, Hanzhong City, Shaanxi Province

727

33°20′ 02.71′′

106°30′18.25′′

44

11

11

11

11

84

Longling Town, Hanyin County, Ankang City, Shaanxi Province

443

32°54′11.78"

108°30′36.21"

40

10

10

10

10

Xinjiang

Liushihu Village, Ürümqi City, Xinjiang Province

205

44°32′ 35.60′′

87°27′ 45.06′′

20

5

5

5

5

28

Ziniquanzi Town, Fukang City, Xinjiang Province

513

44°02′ 35.60′′

88°35′ 38.32′′

8

2

2

2

2