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psychic as well as neurotic and cognitive depression, hysteria, schizophrenia, will be non-existent. Likewise it will steer clear of physical ailments also. Such is an most efficient and organised symbiotic system of management in nature which mankind has not been able to achieve inspite of astonishing scientific and technological advances.
Stabilising progression and retrogression at sustainable
level:
The mutually sustaining eco-systems were damaged and degraded mainly because of anthropocentric approach of mankind that human beings are centre of the universe and all resources are for him. The hedonistic greed of men overexploited the nature beyond its carrying and rejuvenating capacity. If natural resources are utilised within their carrying capacities they are self-sustaining. Even the degraded eco-systems start rejuvenating as soon as the biotic pressure mainly of man and his domestic animals is taken off and balanced to the carrying capacity. The process of succession or progression as a result of controlling biotic pressure and also of retrogression by increasing it in forest eco-systems have been well studied and documented. One simple example will illustrate it. On a vacant land created by change of course of a river, the natural agents, birds, animals etc. bring in seeds of various species but only colonisers like Acacia arabica, grasses germinate and occupy the land. Species which are suitable in initial conditions of soil, moisture, strong light etc. can only germinate and survive. These colonisers after time varying according to edaphic and climatic conditions modify the soil conditions by leaf fall and also intensity of light. As a result other species like Dalbergia sissoo and their associates are able to germinate and survive. This process of biological evolution continues till a mix of species of plants and animals occupy the land and perpetuate in mutual collaboration. This is called climax stage. The intermediate stages are succession stages. If the balance in climax stage is disturbed by over exploitation and biotic pressure the
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