G. S. Rajwar , Manoj Dhaulakhandi , Pramod Kumar

Abstract

The density of seedlings and saplings, a measure of regeneration potential, was studied for ten forest sites with three stands each consisting of three elevational forest types : Quercus leucotrichophora-Pinus roxburghii (I800-2000m), Q. leucotrichophora (2000-220Om) and Q. floribunda (2200-2400m). In these forests the sapling density ranged from 2.64 to 7.73 saplings 25 m^-2 , and seedling density 5.28 to 14.52 seedlings 25 m^-2. On the basis of regeneration potential, Sites I to III were dominated by Q. floribunda, Sites IV to VIII and X by Q. leucotrichophora and Site IX by Pinus roxburghii. Most of the species were contiguously distributed. Only 88% of the tree species were recorded in seedling stage while sapling percentage is further reduced.

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G. S. Rajwar , Subodh K. Gupta

Abstract

The vegetation of Garhwal Siwalik hills between the rivers Khoh and Ganges has been studied for various phytosociological parameters. The forests on sites 1 to 5 consisted of Holoptelea - Terminalia, Adina - Schleichera. Shorea - Mallotus, Bischofia - holoptelea and Acacia Dalbergia communities respectively. The total tree density and the hasal cover of the forests have heen compared with those of certain tropical and temperate forests of the world. These forests are the extension of Himalayan temperate forests.

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G. S. Rajwar , Subodh K. Gupta

Abstract

The biological spectrum of Garhwal Siwalik has been studied in relation to the environment. Life forms in the order of importance recorded were therophytes (62.8%), phanerophytes (26.8%), chamaephytes (5.7%), geophytes (4.5%) and hemlcryptophytes (0.2%). The vegetation appears to be predominating by phanerophytes except the river banks and other disturbed areas where therophytes are dominating.

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G. S. Rawat , V. K. Tiwari , G. S. Rajwar , P. S. Saxena

Abstract

Stem and leaves of Polypogon fugax Nees ex Steud in pre-flowering stages and the Item, leaves and inflorescence of this plant in flowering and post-flowerine stages were analysed for the estimation of minerals, amino-acids. Sugars and calorific value. More sucrose was accumulated in all the parts during different growing stages of the plant. The pre-flowering stage of Polypogon fugax conserves the highest amount of energy.

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