Proceedings of the American Philosophical Society Held at Philadelphia for Promoting Useful Knowledge, Том 69American Philosophical Society, 1930 |
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Сторінка 45
... soil is a function of the climate , and particularly of the climatic factors temperature and humidity . The nature of the parent rock is considered of secondary importance ; it may impress its characteristics upon the resulting soil ...
... soil is a function of the climate , and particularly of the climatic factors temperature and humidity . The nature of the parent rock is considered of secondary importance ; it may impress its characteristics upon the resulting soil ...
Сторінка 55
American Philosophical Society. soil , provided texture and structure of the soil permit any per- colation . This effects a carrying downward and away of the soluble mineral substances , a leaching out of the soil . The soil - water ...
American Philosophical Society. soil , provided texture and structure of the soil permit any per- colation . This effects a carrying downward and away of the soluble mineral substances , a leaching out of the soil . The soil - water ...
Сторінка 61
... soil , almost white , resting under a layer of black humus . This light colored soil then is a white " lixivium " and is so called . Type 4 : temperature high ; rainy seasons alternating with dry seasons ; soil material moderately ...
... soil , almost white , resting under a layer of black humus . This light colored soil then is a white " lixivium " and is so called . Type 4 : temperature high ; rainy seasons alternating with dry seasons ; soil material moderately ...
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