| dc.description | EVALUATING ECOSYSTEM SERVICES IN CHAR LAND AGROFORESTRY SYSTEMS; A THESIS BY A. T. M JUNAIDUR RAHAMAN CHAWDHURY, Registration No. 1601320, Session: 2022, Semester: July-December, 2023; MASTER OF SCIENCE (MS) IN AGROFORESTRY AND ENVIRONMENT, DEPARTMENT OF AGROFORESTRY AND ENVIRONMENT, HAJEE MOHAMMAD DANESH SCIENCE AND TECHNOLOGY UNIVERSITY, DINAJPUR; DECEMBER 2023. | en_US |
| dc.description.abstract | Agroforestry systems are believed to offer numerous ecosystem services. Especially in the case
of char land agroforestry practices, this is almost absent. Therefore, this research investigated
the outcome of four key ecosystem services and environmental advantages of seven char land
agroforestry systems (Malta, Mango B, Litchi, Mahogony, Guava, Lombu, and Mango H) as a
prologue to the special issues like carbon sequestration, carbon: nitrogen (C: N) ratio, soil
nutrient contents, and local field level biodiversity changes. This research has found a
significant variation in soil chemical properties by practicing agroforestry. The only decrease
in soil properties was found in soil pH and the maximum variation (11.30%) of this parameter
occurred in the Lombu-based multistoried agroforestry field. However, overall effective
increases were noticed in all other chemical properties of soil. Consequently, Mango (Var.
Hariavanga) based agroforestry field gave maximum increase of soil organic carbon, available
Potassium, available Phosphorus, available Sulphur, and available Zinc (131.91, 62.50, 73.06,
98.46, 72.58, % respectively). On the other hand, available nitrogen was increased maximum
in both varieties (Hariavanga and BARI Am 4) of the Mango field which was 100%. Again,
the maximum (15.28%) magnesium was increased in Guava, and the C: N ratio (31.26%) was
in Litchi Litchi-based agroforestry field. In the case of soil biological properties, all the
parameters were also increased from the initial open field conditions. Maximum increase of
soil bacteria, P2 solubilizing bacteria, and fungus were found in the Litchi-based agroforestry
system (759.24, 124.38, and 98.48 %, respectively). In the case of N2 fixing bacteria, BARI
Am 4 Mango field gave a 100.69 % increase value. For Actinomycetes, a 908% increase was
found in the Guava-based agroforestry field. In the context of local field-level biodiversity, the
population of flora and fauna has doubled within five years in the Mango-based agroforestry
field. This increase, i.e. improvement trend, has been observed in the Mahogany Litchi, Guava,
and Lombu-based agroforestry also. Finally, it may be concluded that due to practicing
different fruits and forests-based agroforestry systems in char land, a significant amount of four
ecosystem services were increased. | en_US |
