Accounting for upland soils in forest lands and forest depreciation both result in an average depreciation of PHP 1.29 billion during 1975-1992 (Table 16). As a percentage of average gross value added in agriculture and forestry, depreciation is about three percent. The other important indicators of sustainability however, are estimates that include non-marketed values, the time path of depreciation and inter-sectoral interactions. For these, a comprehensive economy-wide accounting is warranted.
Table 16
Depreciation of
forest lands: dipterocarp and soil resources (in million pesos, at 1988 prices)
|
Year |
Dipterocarp forests |
Upland soils* |
Total |
GVA in agriculture and forestry |
GVA net of depreciation |
||
|
1975 |
n.a. |
|
(54.8) |
** |
n.a. |
12,043 |
n.a. |
|
1976 |
(2,702.1) |
|
(63.0) |
** |
(2,765.1) |
13,603 |
16,368 |
|
1977 |
(1,037.2) |
|
(72.4) |
** |
(1,109.6) |
15,017 |
16,127 |
|
1978 |
(613.2) |
|
(83.2) |
** |
(696.4) |
17,067 |
17,763 |
|
1979 |
(1,204.1) |
|
(95.6) |
** |
(1,299.7) |
20,191 |
21,491 |
|
1980 |
(1,271.6) |
|
(109.9) |
** |
(1,381.5) |
22,204 |
23,585 |
|
1981 |
(1,158.1) |
|
(126.0) |
** |
(1,284.1) |
24,405 |
25,689 |
|
1982 |
(1,387.8) |
|
(145.2) |
** |
(1,533.0) |
27,204 |
28,737 |
|
1983 |
(1,221.8) |
|
(166.9) |
** |
(1,388.7) |
29,757 |
31,145 |
|
1984 |
(689.9) |
|
(191.9) |
** |
(881.8) |
51,273 |
52,155 |
|
1985 |
(2,085.1) |
|
(220.6) |
** |
(2,305.7) |
92,088 |
94,394 |
|
1986 |
(468.8) |
|
(253.5) |
** |
(722.3) |
54,143 |
54,865 |
|
1987 |
(551.0) |
|
(291.4) |
** |
(842.4) |
59,047 |
59,890 |
|
1988 |
(890.7) |
*** |
(334.9) |
** |
(1,225.6) |
66,921 |
68,147 |
|
1989 |
(438.6) |
|
(385.0) |
|
(823.6) |
76,218 |
77,042 |
|
1992 |
(504.0) |
|
(588.0) |
|
(1,092.0) |
106,846 |
107,938 |
|
Average |
(1,081.6) |
|
(198.9) |
|
(1,290.1) |
43,001 |
46,356 |
| Notes: | * Includes only upland soils in areas with at least 18% slope categorized as forest lands. This is approximately 70% of all upland soils are found in forest lands. |
| ** The 1975 - 1988 series was extrapolated based on 1989 - 1992 onwards data. | |
| *** An earlier version of this, P 936 M, was computed by applying the GDP deflator to the value estimate in 1985 prices in DENR (1992). This table uses the sectoral price index for rebasing instead of the GDP deflator. |
