1979
DOI: 10.1080/00382167.1979.9630207
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Site Quality Prediction for Pinus patula in the Glengarry Area, Transkei

Abstract: Multiple regression and correlation techniques were used to isolate environmental factors associated with three tree growth measures. Topographic variates accounted for between 42% and 48% of the variation. Altitude, percentage distance from contributing ridge crest, landsurface unit, slope and parent material were common significant factors. Prediction from edaphic morphological factors and chemical factors of the A, B or C horizon was very poor. The equations for site index (two methods) and mean annual incr… Show more

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Cited by 13 publications
(9 citation statements)
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“…Chev.) baseou-se em características de clima (GREY, 1979;FREEMETEO, 2013) e de solo (UNITED STATES DEPARTMENT OF AGRICULTURE, 1999) da região de origem desta espécie vegetal. Pois, a formação florestal savânica apresenta feições similares em cada continente, tendo influência das interações climáticas e dos eventos geológicos (COLE, 1986).…”
Section: Methodsunclassified
“…Chev.) baseou-se em características de clima (GREY, 1979;FREEMETEO, 2013) e de solo (UNITED STATES DEPARTMENT OF AGRICULTURE, 1999) da região de origem desta espécie vegetal. Pois, a formação florestal savânica apresenta feições similares em cada continente, tendo influência das interações climáticas e dos eventos geológicos (COLE, 1986).…”
Section: Methodsunclassified
“…In contrast, Fralish and Loucks (1975) found that including soil nutrient data only slightly improved site index estimates for aspen. Grey (1979) failed to find any significant correlation between P. patula site index and a number of soil morphological and chemical features. However, topographical features such as land surface class, slope, altitude and distance from ridge crest were significant.…”
Section: Soilsmentioning
confidence: 87%
“…site index), which unfortunately is all too often inaccurate. This problem is evident in Grey's (1979) attempt to relate site factors to site index. Grey considered three measures of site productivity, Marsh's site index, Crowe's site index and Wessels' MAI, each of which was best predicted by a different subset of the site factors considered; no one factor was common to all three.…”
Section: Assessing Site From Physical Site Propertiesmentioning
confidence: 99%
“…(Coile, 1952;Carmean, 1975;Spurr & Barnes, 1980e Kozlowski et al, 1991. A relação normalmente é inversa, isto é, quanto maior a declividade, menor é o crescimento das árvores (Trimble Jr & Weitzman, 1956;Ralston, 1964;Carmean, 1967;Hills, 1976;Grey, 1979Grey, e 1985Meeuwig & Cooper, 1981;Meiners et al, 1984;Pregitzer & Barnes, 1984;Harding et al, 1985;Fabres et al, 1987;Hix, 1988;Brais & Camiré, 1992e Morris & Parker, 1992. O crescimento varia em função do relevo e, de modo geral, o aumento da declividade reduz o crescimento (Zahner, 1958(Zahner, e 1962Myers & Deusen, 1960e Braga , 1997).…”
Section: Declividadeunclassified