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K. A. Shankarnarayan , R. K. Gupta

Abstract

The physical position, configuration of the ground and climate of Coimbatore district are presented. For convenience of description the forest of both Coimbatore North and South are dealt with separately. In the former two types of vegetation are there namely (1) The Southern Tropical Thorn Forest and (2) Southern Tropical Dry Deciduous forest according to champion's classification. While in the latter five types of forests are met with viz. (1) Southern Wet Temperate, (2) Southern Tropical Wet Evergreen, (3) Southern Tropical Moist Deciduous, (4) Southern Tropical Dry Deciduous and (5) Southern Tropical Thorn Forests. The Southern thorn forest generally consists of Acacia latronum as dominant. Anogeissus latifolia is predominant in the Dry deciduous type. In the Moist deciduous forest, Tectona grandis is dominant associated with Terminalia tomentosa. The wet Evergreen forest has mainly species like Hopea parviflora, Mesuaferrea, Calophyllum elatum, etc. Syzygium calophyllifolium, S. arnottianum and Meliosma wightii dominate the Southern wet Temperate forest. Grasslands here are regarded as "Subclimax" principally consisting of Themeda cymbaria and Cymbopogon polyneuros, etc.

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K. A. Shankarnarayan , M. V. Dabholkar

Abstract

The situation, topography geology arid climate of Salem district are presented. Based on Champion's classification the following types are met with, viz. (1) Southern thorn Forest, (2) Southern Dry Deciduous, (3) Southern Dry Evergreen, and (4) Southern Evergreen. The Southern thorn Forest comprises two sub-types namely: (a) Acacia-Pterolouium type and (b) Albi ia-Chloroxylon type. In the Dry Deciduous forests we encounter sub-types of Anogeissus and Shorea talura. The Dry Evergreen mainly consists of Hardwickia binata. The Southern Evergreen has predominantly Syzygium-Wendlandia type. The floristic composition of each type and sub-type is presented in detail.

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K. A. Shankarnarayan , Y. Satyanarayan

Abstract

A brief account of the environment of the Centual Luni Basin in western Rajasthan is given. By line transect and chart quadrat studies, five grassland type have been distinguished in the alluvial plains, viz., (1) Sehima-Dichanthium type, (2) Cenchrus type, (3) Eleusine type, (4) Cynodon type, and (5) Aristida type. The floristic composition and analytical characters for each type are given in detail. The majority of the grasslands are in a degraded condition. The Sehima-Dichanthium and the Cenchrus types can be considered as "excellent" condition class; the Eleusine and Cynodon types as "fair" and the Aristida type as "poor" condition class

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