Watershed rehabilitation potential of Calliandra (Calliandra calothyrsus Meissn.) in Manolo Fortich, Bukidnon, Philippines

Date

7-2018

Abstract

This study analyzed the contribution of Calliandra calothyrsus Meissn. in rehabilitating ecosystems function in the degraded areas of Manolo Fortich, Bukidnon. Landscape Function Analysis (LFA) was used to determine stability, infiltration, nutrient cycling, vegetation structure and habitat complexity, while the Shannon- Wiener was used for species diversity. Benefit-cost analysis (BCA) on the use of Calliandra for watershed rehabilitation was compared with a pure stand of fast-growing Brazilian fire tree (Schizolobium parahyba (Vell.) S.F. Blake).

There were four seral stages of Calliandra: RA1 (1-year old Calliandra), RA4 (4-year old Calliandra), RA6 (6-year old Calliandra), and RA12 (12-year old Calliandra) that were compared with a grassland (GL) and a nearby secondary forest (SF). Results of the LFA showed that stability, infiltration and nutrient cycling indices were highest in SF at 84.7, 79.4 and 79.8, respectively. Indices for RA12 approaches that of the SF having values of 84.5, 65.3 and 64.4 for stability, infiltration and nutrient cycling, respectively. The use of Calliandra as a pioneer species in watershed rehabilitation hastened the biogeochemical functions of the rehabilitated sites and approaches the functions of SF with increase in age.

Pearson correlation showed that only pH and CEC have influenced the biogeochemical functions of the study areas. pH was positively highly correlated with stability (p = 0.867) but negatively correlated with infiltration (P =-0.808) and nutrient cycling (P =-0.773) indices. CEC was negatively correlated with all indices at 0 = -0.541, p = -0.761 and o = -0.735 for stability,

Document Type

Dissertation

Degree

Doctor of Philosophy in Forestry

College

Graduate School (GS)

Adviser/Committee Chair

Rex Victor O. Cruz

Committee Member

Wilfredo M. Carandang, Margaret M. Calderon, Enrique L. Tolentino, Jr.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

En – AGROVOC descriptors

CALLIANDRA CALOTHYRSUS; WATERSHED MANAGEMENT; RESOURCE MANAGEMENT; REHABILITATION; PHILIPPINES

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