Author: Norman Owen-Smith
Publisher: Cambridge University Press
Published: 2021-10-07
Total Pages: 379
ISBN-13: 1108832598
DOWNLOAD EBOOK →Demonstrates how Africa's physical features, savannas and abundant grazers enabled frugivorous apes to become savanna-living hunters.
Author: David Pimentel
Publisher: Cambridge University Press
Published: 2009-03-19
Total Pages: 0
ISBN-13: 9780521104715
DOWNLOAD EBOOK →Land degradation from soil erosion has been considered by many to be a problem of significant proportion, affecting some 30-50% of the earth's land surface. At the time of the first publication of this book in 1993, estimates indicated that 10-15 million hectares of land were being lost each year through erosion and salinisation from irrigation and that at such a rate of loss, topsoil reserves on most sloping lands would be depleted within two hundred years. Since humankind's dependency on the land for food is almost total, soil erosion represents a real threat to the security of our food supply. The need for the immediate conservation of the world's soil resources is therefore clear. As part of the response to this need, the International Union for the Conservation of Nature's Commission on Ecology convened a special working group to consider the problem of world soil erosion and to propose practical solutions for soil conservation. This important book presents the outcome of their work.
Author: Edna Margaret Lind
Publisher: Longman Publishing Group
Published: 1974
Total Pages: 284
ISBN-13:
DOWNLOAD EBOOK →Vegetation types; Vegetation and environment.