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A common relationship between precipitation and grassland peak biomass for East and southern Africa
Author(s) -
DESHMUKH I. K.
Publication year - 1984
Publication title -
african journal of ecology
Language(s) - French
Resource type - Journals
SCImago Journal Rank - 0.499
H-Index - 54
eISSN - 1365-2028
pISSN - 0141-6707
DOI - 10.1111/j.1365-2028.1984.tb00693.x
Subject(s) - biomass (ecology) , forestry , environmental science , precipitation , grassland , zoology , mathematics , geography , agronomy , biology , meteorology
Summary A compilation of data from East and southern Africa is used to establish a relationship between precipitation and peak biomass aboveground in the herb layer (a crude measure of primary production). The regression equation is: peak biomass (kg ha ‐1 ) = 8.488 × precipitation (mm) ‐ 195.768, which predicts a peak biomass of approximately 800 kg ha ‐1 for every 100 mm of precipitation received above 20 mm. The usefulness and limitations of this result are discussed. Résumé Une compilation de données d'Afrique du Sud et de l'Est est utilisée pour établir une relation entre la précipitation et la biomasse maximale du tapis herbacé au‐dessus du sol (mesure brute de la production primaire). L'équation de régression est: biomass maximale (kg ha ‐1 ) = 8,488 × précipitation (mm) ‐ 195,768, qui prédit une biomasse maximale d'environ 80 kg ha ‐1 pour chaque tranche de 100 mm de précipitation au‐delà de 20 mm. L'utilité et les limites de ce résultat sont discutés.

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