Rangelands: A Resource Under Siege

Rangelands: A Resource Under Siege

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This volume comprises the proceedings of the Second International Rangelands Congress held in Adelaide, Australia in May 1984, and includes some 350 contributions drawn from 43 different countries. The Congress addressed the problem of the conflict between land-users and the degradation of this valuable resource. Some 40% of the Earth's land surface is and or alpine and therefore unsuitable for agricultural cultivation. Collectively, these lands are known as rangelands and in their natural state they constitute a habitat for grazing animals, both domestic and wild. Despite their low productivity, rangelands have been used for thousands of years as a source of food and fibre, but other uses such as mining, tourism, recreation and conservation are exerting increasing demands. The result is often conflict between land-users and degradation of the resource.RESULTS Total cover of shrubs and perennial grasses increased from l7.5% in l950 to 32.5% in l975. but in l983 was only 2l8% (Figure li. Total shrub cover was l7.2% in l950; it increased by about 50% between l950 and l965, remainedanbsp;...

Title:Rangelands: A Resource Under Siege
Author: P. J. Joss, P. W. Lynch
Publisher:Cambridge University Press - 1986

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