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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)