s:1193:"TI Carbon stocks assessment of forest land uses in the Kaliwa watershed, Philippines 
AU Pulhin, F.B. 
AU Cruz, R.V.O. 
AU Lasco, R.D. 
AB Kaliwa watershed in the provinces 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 assessments 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 forests- 121.21 Mg/ha; brushland- 74.27 Mg/ha; and grassland-Â  57.56 Mg/ha) indicate that substantial degradation of forest resources has occurred through time. Activities to enhance 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. 
";