Environmental Science
92 ENVIRONMENTAL SCIENCE Table 2.8 : Sediment load of some major rivers (Brown and Wolf, 1984) River Country Annual sediment loa ...
ENVIRONMENTAL SCIENCE : NATURAL RESOURCES 93 Estimates of Excessive Erosion of Top Soil from World Cropland Grand Total Rest of ...
94 ENVIRONMENTAL SCIENCE Wind Erosion Soil erosion by wind is common in dry (arid) regions Two characteristics of such region ar ...
ENVIRONMENTAL SCIENCE : NATURAL RESOURCES 95 water logging. Water and wind erosion alone has affected 150 million hectares of fe ...
96 ENVIRONMENTAL SCIENCE vegetal cover brings about marked changes in the local climate of the area. In this way deforestation a ...
ENVIRONMENTAL SCIENCE : NATURAL RESOURCES 97 Research should focus on management technology and the present socio-economic syst ...
98 ENVIRONMENTAL SCIENCE (2) It damaged the protective vegetation over both above and below roads, (3) It resulted in debris cov ...
ENVIRONMENTAL SCIENCE : NATURAL RESOURCES 99 Desert Development Programme:- The objectives of the programme include controlling ...
100 ENVIRONMENTAL SCIENCE As a consequence of increasing tampering of nature by man, natural reserves are greatly dwindling and ...
ENVIRONMENTAL SCIENCE : NATURAL RESOURCES 101 (6) To reduce the wind velocity near the ground by growing vegetation cover, ridgi ...
102 ENVIRONMENTAL SCIENCE Control over Population Increase We should aim at striving for an optimum instead of maximum, sutain ...
ENVIRONMENTAL SCIENCE : NATURAL RESOURCES 103 the scarce non-renewable resources. As such, it is advisable to substitute wood an ...
104 ENVIRONMENTAL SCIENCE biosphere. The most essential basic attribute of most environments is that they are muti- dimensional ...
ENVIRONMENTAL SCIENCE : NATURAL RESOURCES 105 A part of the land not in use is classified as wasteland. This includes the arid, ...
106 ENVIRONMENTAL SCIENCE land use survey, soil conservation in catchments of River Valley Projects and flood prone rivers, affo ...
ENVIRONMENTAL SCIENCE : NATURAL RESOURCES 107 Social forestry: This forestry, is for private land. There are two main objectives ...
108 ENVIRONMENTAL SCIENCE INTRODUCTION No life exists in a vacuum. Materials and forces which constitutes its environment and fr ...
ENVIRONMENTAL SCIENCE : ECOSYSTEM 109 (3) British ecologist Charles Elton (1927) defined ecology as “the scientific natural hist ...
110 ENVIRONMENTAL SCIENCE (iii) Geobiocoenosis (V.V. Doduchaev, 1846-1903); G.F. Morozov; see Sukachev, 1944), (iv) hlocoen (Fri ...
ENVIRONMENTAL SCIENCE : ECOSYSTEM 111 may be subdivided into smaller unit, such a freshwater habitat may exist as a large lake, ...
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