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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B7. Istanbul 2004 
management plan. Application of several image classification 
methods to obtain landscape and forest type map and spatial 
analysis in determination of the spatial distribution, status and 
threats of identified HCVF are some of potential techniques to 
support the identification of HCVF. 
Overall objective of this research is to identify the presence of 
High Conservation Value Forest (HCVF) in Natural Production 
Forest, using optical satellite data, different image classification 
techniques and spatial analysis, to support Sustainable Forest 
Management Certification process. 
2. STUDY AREA 
Forest area managed by PT Hutansanggam Labanan Lestari 
(previously PT Inhutani ! Labanan) is situated in the Berau 
District, part of East Kalimantan Province in Indonesia. 
Previous management of PT Hutansanggam Labanan Lestari, 
which is PT Inhutani I, also manages some other sites 
surrounding. Geographically, the forest management unit lies 
between 1° 45’ to 2° 10° N, and 116° 55 and 117° 20’ E (Figure 
7 in page 19). The land use status of PT Hutansanggam 
Labanan Lestari is presented in table 1 (Smartwood 2001) 
Being mandged by PT Inhutani I since 1976, most of the natural 
forest in Labanan area has been logged. Logging activities have 
been done under Indonesian selective cutting and planting 
system (TPTI). According to TPTI system, the forest 
management unit can only harvest commercial timber species 
with diameter (DBH) > 50 cm in the production forest. Logging 
intensity in this site ranges from 42-173 m°/ha (Fauzi 2001). 
The annual allowable cut for PT Inhutani I is approximately 
50000 m? per year within a rotational logging block of 
approximately 1500 ha. However, the company is implementing 
conservative logging regime, resulting in the average timber 
harvest rate as low as 31208 m? per year (Smartwood 2001). 
Threats to the forest management unit are illegal logging and 
conversion of forest to agriculture as implication of area 
opening by the forest management unit. Up to now, there are 
two villages inside the Labanan concession boundary; both are 
under spontaneous resettlement promoted by the government. 
The forest areas are increasingly converted to agriculture field 
(Fauzi 2001). Labanan forest is managed under adaptive 
collaborative management (ACM). PT Inhutani I, local 
cooperatives, district government and provincial government 
are the shareholders. However, PT Inhutani I is responsible for 
all technical aspects related to forest management operations 
(Wastono 2003). 
The title should appear centered in bold capital letters without 
underlining, near the top of the first page of the paper. The font 
type Times New Roman with a size of twelve (12) points is to 
be used. Use more than one line if you wish, but always use 
single-spacing. After one blank line, type the author(s) 
name(s), affiliation and mailing address (including e-mail) in 
upper and lower case letters centered under the title. In the case 
of multi-authorship, group them by firm or organization as 
shown in the title of these Guidelines. 
165 
3. METHOD 
3.1 Preliminary Assessment of High Conservation Value 
Forest (HCVF) 
Assessment of High Conservation Value Forest comprises 
preliminary assessment and full assessment. Preliminary 
assessment emphasis on the identification of (spatial) 
occurrence of forest containing High Conservation Values 
(HCV). This process involves analysis of spatial information. 
Full assessment refers to verification the identified HCV. 
However, the full assessment is beyond the scope of this study, 
since it requires the preliminary assessment of HCVF to be 
done first. Because of the limitation of this study, only HCV 
elements related to soil and water conservation are assessed. 
Information requirements and output maps representing these 
elements are described in Table 1. 
3.2 Identifying Forest Areas Function as Unique Sources of 
Drinking Water 
Some of the regulatory functions of forest, related to water 
conservation, are absorption, storage and release of water, 
which are extremely important. In situation that a particular 
forest area protects and maintains water supplies for people or 
communities, without any other alternative sources of drinking 
water (i.e. unique), then the forest areas are critical and should 
be considered as High Conservation Value Forest, as presented 
in Figure 1. The sources of drinking water means also water for 
other essential daily needs. However, an exception should be 
made when the communities have access to a ready replacement 
source of water that not influenced directly by the existence of 
forest area within the forest management unit (e.g. supplied by 
local drinking water company that use other source of water 
intake, that can fulfil communities’ needs in reliable way and at 
an acceptable cost). 
3.3 dentifying Forest Areas as part of Critical Major 
Catchments 
If a forest area comprises large proportion of a catchment, then 
it has critical role in maintaining water quality and quantity. 
According to the similar HCVF study, forest area comprises 
38% of a critical catchments was defined as HCVF. As the 
importance of the catchment increased, in terms of flooding or 
drought risk or water usage, the services provided by the forest 
become more critical. According to the HCVF guideline, all 
forest areas lies within super-priority catchment and priority 
catchment areas (i.e. in Indonesia’s case are catchment priority 
I and II) should be considered as High Conservation Value 
Forest. In case of Indonesia, major catchment prioritisation was 
done by Ministry of Forestry of Indonesia, in particular by 
Directorate General of Reforestation and Land Rehabilitation. 
The decision scheme in identifying the presence of HCV 
element 4.2 is described in the flowchart in Figure 2. Spatially 
and operationally, vector editing and table operation functions 
were extensively used to select water catchment partitions that 
fulfil the criteria to be assigned as areas containing HCV 
elements 4.1 and 4.2. The spatial analysis done to determine the 
presence of HCV elements 4.1 and 4.2 are described in Figure 
3.