| Database on artificial forests in the tropics | ||||||
| ID: Nouth Sumatra_other tree species-1 | ||||||
| 1. General information | ||||||
| Date of the investigation | : | March, 2002 | Plantation area (ha) |
: | 1.0 | |
| Plantation name | : | Ake Nauli Village | Tree species | : | Alnus nepalensis | |
| Region | : | North Sumatra | Family/Genus | : | Betulaceae - Alnus | |
| Altitude (m, asl) | : | 1,200 | Diameter at
breast height Maximum (cm) |
: | 85.0 | |
| Latitude | : | 2°30'S | Diameter at
breast height Minimum (cm) |
: | 25.0 | |
| Longitude | : | 98°45'E | Diameter at
breast height Average (cm) |
: | 55.0 | |
| Planted year and month | : | November, 1993 | Tree
height Maximum (m) |
: | 28.0 | |
| Planted spacing (m × m) |
: | 4 × 6 | Tree
height Minimum (m) |
: | 25.0 | |
| Survaival rate of planted trees (%) |
: | 77 (two months after planting) | Tree
height Average (m) |
: | 26.5 | |
| 2. Site characteristics information | ||||||
| Land tenure | : | Government | Expenditure (per ha) |
: | - | |
| Monthly temperature of the site (°C) |
: | (min.: 20.0, max.: 32.0) | Land preparation | : | Rp500,000 | |
| Monthly rainfall of the site (mm) |
: | 180 (annual: 2,451) | Planting stock cost | : | Rp200,000 | |
| Dry season | : | - | Maintenance cost | : | Rp500,000 | |
| Slope | : | 0 - 5% | Potential area
for planting (ha) |
: | 10 | |
| Soil type | : | Brown Podsolic | Damages | : | Animan and fire | |
| Soil texture | : | Medium/loamy | Remarks | : | Flowering: every
year Coppicing: medium |
|
| Soil pH | : | Acid | ||||
| Soil depth | : | < 50 cm | Vegetation and land utilization before planting | : | Bare land | |
| Water level | : | Low | ||||
| 3. Seedling information | ||||||
| Seedling | : | Seedring | Size of planting hole (cm) | : | 20 × 20 × 30 | |
| Provenance | : | West Java | Fertilization | : | - | |
| Potted | : | Potted | Weeding | : | Initial two years after planting | |
| Stock period | : | Eight
months (Until growth on 12 - 20 cm high) |
Supplement planting | : | - | |
| Pot type/size | : | Pollybag (10 × 10 × 15 cm) |
Thining | : | - | |
| Forest crown type | : | Monoculture | Prevention | : | - | |
| Forest floor vegetation | : | Scanty (> 10%, <33%) | ||||
| 4. Biomass information | ||||||
| BA (m2 ha-1) | : | - | Stem volume (m3 ha-1) | : | - | |
| Age (year) | : | - | With bark | : | - | |
| Actual density (trees ha-1) | : | - | Without bark | : | - | |
| Biomass (Mg ha-1) | : | - | ||||
| Stem | : | - | ||||
| Bark | : | - | ||||
| Branch | : | - | ||||
| Leaf | : | - | ||||
| Root | : | - | ||||
| Above ground | : | - | ||||