5.1.2. Economic Analysis
As stated before Total Economic Valuation TEV was used ecological function for monetary value. This study focused on economic valuation of coral
reef area where it is covers 196.64 hectare. TEV count of direct value and indirect value based on two components, revenue and cost identification.
Revenue identification
Direct value calculates fisheries productivities in coral reef ecosystem. Meanwhile, indirect values calculate the ecological function of coral as abrasion
prevention, research object, carbon stock and biodiversity potency. Based on research of Hutomo and Suharti 1998 in Agus 2005, revenue
of the productivity of coral reef for fishery is 25 ton per hectare per year. If its value constant per year and price of fish is Rp 5,000kg, then total revenue from
fishery is Rp. 125,000,000hayr. Coral reef can provide valuable research site and stock carbon. The true
value of research is difficult to determine, but includes an element of expenditure in the vicinity of the reef as well as a multitude of potential spin off values arising
from the research Spurgeon, 2003. Kusumastanto et al 1998 in Agus 2005 said that economic value of coral reef as stock carbon is US 240hayear and as
object research is US 91.08hayr, so revenue of coral reef is Rp. 2,160,000hayr for stock carbon and Rp. 819,720hayr for object research with assumption US 1
equal to Rp 9,000. Value of coral reef ecosystem as biodiversity supply is US 15hayr or equal to Rp. 135,000hayr Ruitenbeek, 1991 in Agus, 2005.
Indirect value of coral reef as abrasion prevention is Rp. 40,531,327.55 per hectare per year. This value got from 14,491.055 5 1 110,000 196.64,
50
where 14,491.055 meter is perimeter of coral reef, 5 meter is height of break water, 1 meter is wide of break water, Rp. 110,000 is cost of break water per m
3
, and 196.64 hectares is area of coral reef.
Cost identification
Direct cost acquired from cost of fishery activity. This value consist of invest cost = Rp. 18,500,000 for 5 years, operation cost = Rp. 6,426,000 per year
and fix cost = Rp. 5,035,000 per year Agus, 2005. There are 233 boatsvessels in surrounding Ndana Island Table 13, then
calculated for total invest cost Rp. 4,310,500,000 per 5 years or equal to Rp. 21,920,768.92ha5yr or Rp. 4,384,153.78hayr. Rp 7,614,208.71hayr for
operation cost and Rp. 5,966,033.86hayr for fix cost. Table 13. Number of boat in Rote Barat Daya District
No. Kind of boat
Boatvessel
1. Sailing vessel
188 2. Motor
vessel 9
3. Motor boat
36
Total 233
Source: Kupang dalam Angka 2001. Beside direct cost, there is indirect cost US 5.75hayr or equal to Rp.
51,750 per hectare per year for rehabilitation of coral reef PKSPL-IPB, 1999 in Agus 2005.
Tabel 14 shows TEV of coral reef ecosystem per year in Ndana Island,
which has TEV Rp. 29,619,863,771.97 per year. Hopefully this economic
valuation can help improve coral reef conservation and management, but the level of detailed valuation required will depend on the use the value estimates will be
put to and the management objective addressed.
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Table 14. Economic valuation of coral reef ecosystem in Ndana Island
RC Ecosystem
function Monetary value
Rp.hayr Assumption
Reference
Fisheries of coral reef
125,000,000.00 Constantyear Hutomo and Suharti,
1998 in Agus, 2005 Abrasion
prevention 40,531,327.55 Constantyear
Data analysis Carbon stock
2,160,000.00 Constantyear Kusumastanto et al.,
1998 in Agus, 2005 Research 819,720.00 Constantyear
Kusumastanto et al
., 1998 in Agus, 2005
Revenue
Biodiversity 135,000.00 Constantyear Ruitenbeek,
1991 in
Agus, 2005
Total of Revenue
168,646,047.55
Invest for fisheries
4,384,153.78 Constantyear Analysis
Operational 7,614,208.71 Constantyear Analysis
Fixed cost 5,966,033.86 Constantyear
Analysis Cost
Rehabilitation of coral reef
51,750.00 Constantyear PKSPL, 1999 in
Agus, 2005
Total of Cost 18,016,146.35
Total Economic of coral reef ecosystem
150,629,901.20 Area of coral reef = 196.64 Ha
Æ TEV = Rp. 29,619,863,771.97yr
Assumption: US 1 ≈ Rp 9,000 in 2006
5.1.3. Development Alternatives
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