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Predictive models for biomass and carbon stocks estimation in Grewia optiva on degraded lands in western Himalaya

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Title Predictive models for biomass and carbon stocks estimation in Grewia optiva on degraded lands in western Himalaya
Not Available
 
Creator Archana Verma
N. M. Alam
R. Kaushal
• H. Mehta
O. P. Chaturvedi
D. Mandal
J. M. S. Tomar
A. C. Rathore •
Charan Singh
 
Subject Allometric _ Biomass _ Carbon _ Grewia optiva _ Predictive models
 
Description Not Available
Grewia optiva Drummond is one of
important agroforestry tree species grown by the
farmers in the lower and mid - hills of western Himalaya.
Different models viz., monomolicular, logistic,
gompetz, allometric, rechards, chapman and linear
were fitted to the relationship between total biomass
and diameter at breast height (DBH) as independent
variable. The adjusted R2 values were more than 0.924
for all the seven models implying that all models are
apparently equally efficient. Out of the six non - linear
models, allometric model (Y = a 9 DBHb) fulfils the
validation criterion to the best possible extent and is
thus considered as best performing. Biomass in
different tree components was fitted to allometric
models using DBH as explanatory variable, the
adjusted R2 for fitted functions varied from 0.872 to
0.965 for different biomass components. The t values
for all the components were found non - significant
(p 0.05), thereby indicating that model is valid.
Using the developed model, the estimated total
biomass varied from 6.62 Mg ha - 1 in 4 year to
46.64 Mg ha - 1 in 23 year old plantation. MAI in
biomass varied from 1.66 - 2.05 Mg ha - 1 yr - 1. The
total biomass carbon stocks varied from 1.99 Mg ha - 1
in 4 year to 15.27 Mg ha - 1 in 23 year old plantation.
Rate of carbon sequestration varied from
0.63–0.81 Mg ha - 1 yr - 1. Carbon storage in the soil
up to 30 cm soil depth varied from 25.4 to
33.6 Mg ha - 1.
Not Available
 
Date 2020-05-21T09:31:44Z
2020-05-21T09:31:44Z
2014-07-30
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/36012
 
Language English
 
Relation Not Available;
 
Publisher Not Available