Assessment of forest communities and dependence of local people on NTFPs in Askot landscape, Uttarakhand, Phase 1 - report

Abstract

The Askot landscape represents a great diversity of ecosystems within a very short altitudinal range ie. from 600-7000 m. The assessment of vegetation was done during October, 2012 - October, 2014 covering the entire Gori sub-watershed between 600-2300 m in Askot Landscape in Pithoragarh district of Uttarakhand under Biodiversity Conservation and Rural Livelihood Improvement Project (BCRLIP). A checklist of 573 species of plants was prepared including some rare and endangered species, of which 124 trees, 112 shrubs, 24 climbers, 35 orchids and 278 herbs were recorded after carrying out a reconnaissance of the valley. The data collected for vegetation was analysed and forest communities were identified based on TWINSPAN analysis and various village surveys were conducted to find out the use of various Non Timber Forest Products such as fuelwood, fodder, timber, medicinal plants etc. in the study area. A total of 11 forest communities were identified in the Gori valley, viz. Macaranga pustulata, Shorea robusta, Engelhardtia spicata, Diploknema butyracea, Pinus roxburghii, Alnus nepalensis, Quercus leucotrichophora, Litsea umbrosa, Quercus lanuginosa, Q. leucotrichophora-Neolitsea cuipala and Sorbus foliolosa along an elevational gradient between 600-2300m. It was observed that the total basal area of Q. lanuginosa forest was highest (38.8 m2 ha-1) followed by Q. leucotrichophora (32.7 m2 ha-1) and Pinus roxburghii (31.8 m2 ha-1) and minimum for Q. leucotrichophora-Neolitsea cuipala forest (10.8 m2 ha-1) and Sorbus foliolosa forest (9.2 m2 ha-1). Among Non Timber Forest Products 24, 26, 16 and 24 species were being used as fodder, fuelwood, timber and medicinal plants, respectively. Q. leucotrichophora has the highest preference among fodder followed by Bauhinia vahlii, Boehmeria rugulosa and Ougeinia oogenensis. Lyonia ovalifolia followed by Rhododendron arboreum, Q. leucotrichophora and Woodfordia fructicosa among fuelwood; Shorea robusta followed by Alnus nepalensis, Pinus roxburgii and Q. leucotrichophora among timber; and (ii) Eupatorium adenophorum followed by Terminalia chebula, Zanthoxylum alatum and Pleurospermum angelicoides among medicinal plants. Lopping, forest fire and weed infestation were among major cause of disturbance to forest resources. Impact of lopping on Quercus lanuginosa, Rhododendron arboreum and Q. leucotrichophora, forest fire in W and NW aspects due to the dominance of Chir pine forests and infestation of Cannabis sativa, Eupatorium adenophorum, Urtica dioica and Impatience edgeworthii was highest in NW aspect. The common species used for medicinal purposes by the villagers were Emblica officinalis, Terminalia chebula, Litsea monopetala, Celtis australis, Bauhinia vahlii, Syzygium cumini, Myrica esculenta, Berginia ciliata, Oxalis corniculata, Eupatorium adenophorum, Adhatoda zeylanica, Terminalia chebula, Cissampelos pareira, Viola canescens, Fragaria nubicola, Tinospora cordifolia and different orchid species in Gori valley. Twelve potential plant indicator species viz., Chimnobambusa falcata, Eupatorium adenophorum, Alnus nepalensis, Quercus leucotrichophora, Quercus lanuginosa, Macaranga pustulata, Rhododendron arboreum, Pinus roxburghii, Aconitum heterophyllum, Dactylorhiza hatagirea Picrorhiza kurrooa and Pleurospermum angelicoides were identified based on the information collected during the surveys as well as through secondary information. The distribution map of each species was generated according to climatic zone in ArcGIS software along with their potential distribution range. Finally, a species richness map was prepared to show the high species richness zone in the study area.