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Table 6 Species richness and stand density of studied forests at different altitudinal gradients of Arunachal Pradesh, Northeast India

From: Plant diversity patterns and conservation status of eastern Himalayan forests in Arunachal Pradesh, Northeast India

Climatic zone

No. of transects studied

Altitude range (m)

Located districts

Species richness (No.)

Stem density (≥10 cm GBH) (individuals∙ha−1)

Alpine

15

2803–4161

Tawang and West Kameng

2 to 21 (mean 9 ± 1.57 SE)

196–600 (mean 407 ± 28.40 SE)

Temperate

35

1824–2788

West Kameng, West Siang and Lower Subansiri

5 to 44 (mean 16 ± 1.21 SE)

0–1220 (mean 413 ± 41.75 SE)

Sub-Tropical

70

802–1800

West Kameng, East Kameng, West Siang, East Siang, Upper Siang, Lower Subansiri, Upper Subansiri, Lower Dibang Valley, Anjaw, Papumpare, Tirap and Changlang

5 to 53 (mean 24 ± 1.27 SE)

192–902 (mean 419 ± 15.29 SE)

Tropical

234

87–795

East Kameng, West Siang, East Siang, Upper Siang, Upper Subansiri, Lower Dibang Valley, Lohit, Papumpare, Tirap and Changlang

0 to 64 (mean 23 ± 0.84 SE)

0–650 (mean 352 ± 10.63 SE)