Diversity parameters of Quercus leucotrichophora based agroforestry systems and pure forest in Garhwal Himalaya
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Authors
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Sandeep Kumar
College of Forestry,
VCSG Uttarakhand University of Horticulture and Forestry,
Ranichauri, Tehri Garhwal – 249 199, Uttarakhand
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Arvind Bijalwan
College of Forestry,
VCSG Uttarakhand University of Horticulture and Forestry,
Ranichauri, Tehri Garhwal – 249 199, Uttarakhand
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Bhupendra Singh
College of Forestry,
VCSG Uttarakhand University of Horticulture and Forestry,
Ranichauri, Tehri Garhwal – 249 199, Uttarakhand
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Alok G. Yewale
College of Forestry,
VCSG Uttarakhand University of Horticulture and Forestry,
Ranichauri, Tehri Garhwal – 249 199, Uttarakhand
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Deepa Rawat
College of Forestry,
VCSG Uttarakhand University of Horticulture and Forestry,
Ranichauri, Tehri Garhwal – 249 199, Uttarakhand
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Kuldeep Rana
College of Forestry,
VCSG Uttarakhand University of Horticulture and Forestry,
Ranichauri, Tehri Garhwal – 249 199, Uttarakhand
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Manoj Kumar Riyal
College of Forestry,
VCSG Uttarakhand University of Horticulture and Forestry,
Ranichauri, Tehri Garhwal – 249 199, Uttarakhand
Keywords:
Altitude, importance value index, similarity index, species richness, Triticum aestivumAbstract
Present study estimated the importance value index (IVI), density, frequency, total species richness and diversity parameters, and similarity index of Quercus leucotrichophora based agri-silviculture system, silvipasture system and forest, and also calculated the productivity of wheat (Triticum aestivum) under agri-silviculture system at 12 different villages of two elevations (i.e. 1400-1800 and 1800-2200 m) in Tehri Garhwal district of Uttarakhand. The study revealed that Q. leucotrichophora formed an important part of agri-silviculture, silvipasture systems and forests at different altitudinal gradient. The IVI value of Q. leucotrichophora varied from 180.85 to 205.21 in all land-use systems. The highest value of density, frequency and total species richness was recorded in forest area, followed by silvipasture and agri-silviculture systems. The maximum values of Jaccard (S) and Sorensen (K) index were obtained in agrisilviculture system, followed by silvipasture system and forest area. Diversity parameters of tree species varied between sites and altitudinal ranges. The average grain yield (7.398 q ha-1), straw yield (17.420 q ha-1), biological yield (24.812 q ha-1) and harvest index (29.866) of T. aestivum was higher at lower elevation in comparison to upper elevation in the Q. leucotrichophora based agri-silviculture system.
