Carbon stocks assessment of forest land uses in the Kaliwa Watershed, Philippines

Issue Date

12-2007

Abstract

Kaliwa watershed in the province of Rizal and Quezon is a site for pilot implementation of an improved watershed management plan in the Philippines. As part of the key biophysical resource assessment for the watershed carbon stocks in above-ground biomass, necromass and soil pools in different forest land uses were determined using field measurements. The total C stored in the different land uses surveyed in the Kaliwa Watershed is estimated at 2.65 Megatons, 76% of which is held in secondary forests, and 14% and 10% in brushlands and grasslands, respectively. In all land uses, the largest portion of C is held in the soil. The low C density estimates (secondary forest-121.21 Mg/ha; brushland-74.27 Mg/ha, and grassland 57.56 Mg/ha) indicate that substantial degradation of forest resources has occurred through time. activities to enhanced the watershed's potential to serve as C sink were identified, including forest protection, reforestation of grassland areas and establishment of agroforestry and community-based forestry projects.

Source or Periodical Title

Journal of Environmental Science and Management

ISSN

0119-1144

Volume

10

Issue

2

Page

40-48

Document Type

Article

College

School of Environmental Science and Management (SESAM)

Frequency

semi-annually

Physical Description

map, tables

Language

English

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