Species composition and community structure of forest stands in ...

deodara (0.17) were found to be rare tree species in
Kumaon. Except for Q. glauca, most of the abovementioned
rare tree species were found in Pindari
HUSSAIN et al. 177
region. P. wallichiana, C. torulosa, P. smithiana
and B. utilis were also found in Vinaiyak reserve
forest.
Table 6. Tree species density (TDEN ha -1, S.E.) along with tree species diversity (TDIV), tree species
richness (TRIC), shrub density (SDEN ha -1, S.E.), shrub diversity (SDIV) and shrub richness (SRIC) in
five homogenous groups of 19 tree communities of Kumaon Himalaya based on TWINSPAN classification
(S.E. refers to standard error).
Homogenous group TDEN± S.E. SDEN± S.E TDIV TRIC SDIV SRIC
Aesculus indica- Betula alnoides 744 ± 416 14402 ±10490 1.3 1.4 1.1 1.1
Quercus semecarpifolia- Toona serrata 704 ± 203 6915 ± 431 1.2 1.3 0.9 0.8
Abies pindrow- Betula utilis 493 ± 37 10263 ± 799 1.0 1.0 0.8 0.7
Quercus leucotricophora- Pyrus pashia 667 ± 68 14580 ± 2719 1.3 1.3 1.1 1.1
Quercus floribunda-Rhodendron arboreum 714 ± 70 16835 ± 2863 1.3 1.3 1.3 1.2
Table 7. Mean values of density (ha -1) of major tree and shrub species of surveyed forest stands of
Kumaon Himalaya (S.E. refers to standard error).
Tree species Density S.E. Shrub species Density S.E.
Quercus leucotricophora 139 93 Argemone maxicana 2064 1918
Quercus floribunda 181 102 Arundinella nepalensis 2954 1400
Quercus glauca 59 47 Athyrium sp. 3055 1595
Quercus semecarpifolia 108 46 Berberis aristata 985 319
Quercus lanuginosa 167 71 Euphorbia prolifera 1862 1232
Rhododendron arboreum 175 75 Cratagus sp. 1492 281
Lyonia ovalifolia 114 55 Daphne papyracea 1809 1190
Persia duthiei 110 93 Desmodium gangeticum 2021 1252
Euonymus tingens 70 38 Indigofera heterantha 1667 959
Symplocos theifolia 130 107 Mahonia sp. 554 205
Pyrus pashia 50 18 Myrsine africana 6521 4760
Toona serrata 52 24 Nerium sp. 3671 2656
Abies pindrow 151 97 Polystichum sp. 1527 631
Taxus baccata 151 97 Pteridium sp. 2190 1687
Cedrus deodara 110 77 Pteris sp. 3047 1391
Pinus wallichiana 92 60 Pyracantha crenulata 813 357
Pinus roxburghii 81 44 Rubus biflorus 1618 759
Acer caesium 76 35 Rubus ellipticus 1955 136
Alnus nepalensis 56 27 Urtica dioca 5017 7525
Viburnum mullaha 82 41
Aesculus indica 47 19
Myrica esculenta 86 33
Cupressus torulosa 112 37
Ilex dipyrena 70 37
Swida oblonga 68 28
Betula utilis 85 37
Litsea umbrosa 92 53
Lindera pulcherrima 118 65
Jugulans regia 70 22
Tsuga demosa 94 25
Swida sp. 110 91