THE ROLE OF VEGETATION IN METEOROLOGY, SOIL MECHANICS AND HYDROLOGY

A SURVEY IS PRESENTED OF THE PART PLAYED BY PLANTS IN THE TRANSFER OF WATER ACROSS THE EARTH-AIR BOUNDARY TO DEMONSTRATE THE GREAT IMPORTANCE OF VEGETATION AS A FACTOR IN OPEN AIR PHYSICS, PURE AND APPLIED. THE TWO PRIMARY NEEDS OF THE PLANT WORLD ARE INTERDEPENDENT ON A SUPPLY OF WATER AND A SUPPLY OF RADIANT ENERGY. PLANTS TRANSPIRE LARGE QUANTITIES OF WATER AT A RATE PRIMARILY DEPENDENT UPON WEATHER CONDITIONS, AND CALCULABLE FROM EASILY MEASURED WEATHERED ELEMENTS. THEY PLAY A DOMINANT PART IN THE WATER AND HEAT BALANCES OF THE EARTH'S SURFACE, AND AFFECT LAND DRAINAGE, UNDERGROUND STORAGE AND RIVER FLOW. CALCULATION OF THE TRANSPIRATION RATE CAN BE MADE THE BASIS OF CONTROLLED IRRIGATION TO PRODUCE MAXIMUM GROWTH WITHOUT WASTE OF WATER. IT IS SHOWN THAT THE PRINCIPLE CAN BE APPLIED EQUALLY SUCCESSFULLY TO A FIELD, TO A CATCHMENT AREA AND TO THE BRITISH ISLES. WHEN THE PLANTS GROW IN A CLAY SOIL, SHRINKAGE MAY OCCUR AS THE SOIL DRIES, WITH DAMAGING RESULTS ON ROADS OR BUILDINGS CARRIED ON THE SOIL.

  • Supplemental Notes:
    • Vol 2, pp 145-151, 6 FIG, 2 TAB, 1 PHOT, 13 REF
  • Corporate Authors:

    N/A

    ,   USA 
  • Authors:
    • Penman, H L
  • Publication Date: 1951

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Filing Info

  • Accession Number: 00234463
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 18 2003 12:00AM