Improving Productivity, Profitability and Sustainability of Degraded Grasslands Through Tree-Based Land Use Systems in the Philippines - Smallholder Tree Growing for Rural Development and Environmental Services - page 303

Appendix 2 (continued)

Parameter Value Units Description Source

δ

0.5 - Carbon content of biomass and

wood

j, k

λ 0.07 - Decay constant of timber

products based on half-life
of 10 years

l, m

ω G 0.35 t/m 3 Wood density of Gmelina e

0.60 t/m 3 Wood density of Acacia

mangium

n

ω A

Sources: a = survey and key informant interview, b = Nordhaus (1993) cited by Tomich et al.
(1997), c =Nelson et al. (1996), d = Magcale-Macandog and Rocamora (1997/4), e = Mamicpic
(1997), f = Medalla et al. (1990) as cited by Grist et al. (1997/2), g = Menz et al. (eds) (1998), h
= NEDA (2002), i = Magcale-Macandog, Predo et al. (1997), j = Lasco (1997), k = Young et al.
(1998) and Schroeder (1994), l = Bechmann (1990), m = Grist et al. (1997/10), n = MacDicken
and Brewbaker (1984), o = Magcale-Macandog et al. (1998b)

Appendix 3: Summary of Biophysical Results from SCUAF
Simulation of Alternative Land Use Systems, Claveria, Misamis
Oriental, The Philippines

Land use
system

Soil erosion (t ha -1 ) Carbon (t ha -1 ) Soil nutrients (t ha -1 ) NCF

(t Cha -1 )

Annual CSE Biomass Soil ON OP
IMPLUS 12.06 241.25 0.00 54.19 5.99 3.93 0.00
FPLUS 47.67 953.35 0.00 48.55 5.36 3.52 0.00
TIMPLUS 2.88 57.69 4.01 53.41 5.92 3.87 1.47
TCLUS 9.60 192.00 4.59 53.11 5.89 3.85 1.96
TCSFLUS 6.70 133.97 11.58 53.23 5.90 3.86 2.98
TPLUS 1.06 21.20 23.46 54.94 6.10 3.98 5.95
CSE = cumulative soil erosion, ON = organic nitrogen, OP = organic phosphorus, NCF = net
carbon flow