ISSN:
1573-5095
Keywords:
arid lands
;
coppicing
;
fuelwood
;
hardwoods
;
multiple stems
;
plant density
;
sampling techniques
;
short rotation
;
sprouting
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract Above ground oven dried biomass (BM) of individual trees in young stands of Acacia salicina Lindl. and Eucalyptus occidentalis Endl. were correlated linearly and logarithmically to the square of the basal diameter at 0.2 m (DB) and to the latter multiplied by the height of the tree. Number of main stems at basal height per tree were included as well. DB measurements in young Eucalypt stands provided better BM estimates than the commonly used diameter at breast height (1.3 m) (DBH). The following biometric relationships, after cross-validation against an independent data set, showed the best fit: BM=0.1282*Σ (DB2) and BM=0.1700*Σ (DB2) for A. salicina and E. occidentalis, respectively, with Σ (DB2) ranging from 0–400 cm2 and BM in kg tree−1. For acceptable relative errors in biomass estimations Σ (DB2) should be larger than 100 cm2. Foliage to wood ratios at Σ (DB2)〈100 cm2 for both tree species generally exceeded 1, but rapidly leveled off at 0.81±0.28 and 0.92±0.19 for the Acacia and Eucalypt spp., respectively, at higher Σ (DB2) values.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00127389
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