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STUDIES ON BIOMASS PARTITIONING AND SOIL ENRICHMENT IN PLANTATIONS OF DIFFERENT TREE SPECIES UNDER MID HILL CONDITIONS OF HIMACHAL PRADESH

KrishiKosh

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Title STUDIES ON BIOMASS PARTITIONING AND SOIL ENRICHMENT IN PLANTATIONS OF DIFFERENT TREE SPECIES UNDER MID HILL CONDITIONS OF HIMACHAL PRADESH
 
Creator SANYAM
 
Contributor GUPTA, N.K.
 
Subject ---
biomass partitioning,biomass partitioning
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Description ABSTRACT
The present investigation entitled, “Studies on biomass partitioning and soil enrichment in
plantations of different tree species under mid hill conditions of Himachal Pradesh” was carried out
during the year 2011-2012 at five sites under five species viz. Quercus leucotrichophora, Pinus
roxburghii, Eucalyptus tereticornis, Melia azedarach and Ulmus villosa with 5cm interval in four
diameter classes (5 to10cm to >20cm), raised by the department of Silviculture and Agroforestry, Dr.
Y. S. Parmar University of Horticulture and Forestry, Nauni(Solan), Himachal Pradesh. The various
observations regarding different growth parameters, standing volume, green and dry biomass were
taken from the randomly selected trees (30% of the total population). The different tree growth
parameters increased with increase in diameter in all the species. The data on various growth
parameters were used for variability analysis and correlation study. Among crown characters, crown
area, crown width, crown height and crown length showed significant differences within four diameter
classes in all the species. All the tree parameters showed statistically significant variation except
diameter at breast height and collar diameter for all the species. Stem volume of sample trees increased
with increase in diameter. Stem volume was significantly correlated with all the tree growth
parameters and high correlation coefficient was observed between all the tree growth parameters. For
estimation of volume, diameter as independent variable remained best estimator using power function
while form factor and tree height showed mixed results with power, exponential and polynomial
functions. Similar results were obtained in case of estimation of branch (green and dry) biomass with
branch length and branch diameter where power, exponential and polynomial functions gave the
maximum value of adjusted R2. Studies on biomass partitioning were also done to find out
contribution of different plant parts (stem, branch+twig, leaves) towards total biomass and their per
cent contribution was also calculated. Melia azedarach was having maximum green as well as dry
biomass. Soil parameters generally showed decreasing trend with increase in depth except
exchangeable calcium and magnesium. The solar flux and LAI varied with age and species.
 
Date 2017-01-04T10:46:34Z
2017-01-04T10:46:34Z
2012
 
Type Thesis
 
Identifier 47850
http://krishikosh.egranth.ac.in/handle/1/94317
 
Language en
 
Format application/pdf