Database on artificial forests in the tropics
ID: North Thailand_Tectona grandis-57
1. General information
Date of the investigation	:	December, 2003		Plantation area (ha)	:	22.40
Plantation name	:	HT_07, Huay Tak		Tree species	:	Tectona grandis
Region	:	Ngao, Lampang		Family/Genus	:	Verbenaceae - Tectona
Altitude	:	335		Diameter at breast height Maximum (cm)	:	47.6
Latitude	:	18o 38' N		Diameter at breast height Minimum (cm)	:	21.3
Longitude	:	99o 53' E		Diameter at breast height Average (cm)	:	34.2
Planted year and month	:	June, 1945		Tree height Maximum (m)	:	31.40
Planted spacing (m x m)	:	2 x 2		Tree height Minimum (m)	:	20.70
Survaival rate of planted trees (%)	:	9		Tree height Average (m)	:	27.63
2. Site characteristics information
Land tenure	:	Government		Expenditure (per ha)	:	TB 37,400
Monthly temperature of the site (oC)	:	(average: 26.3)		Land preparation	:	TB 13,275
Monthly rainfall of the site (mm)	:	(annual: 1,279)		Planting stock cost	:	TB 21,250
Dry season	:	November - March		Maintenance cost	:	TB 2,875
Slope	:	flat		Potential area for planting (per ha)	:	22.40
Soil type	:	Tha Yang/Lat Ya assocition : Ty/Ly		Damages	:	none
Soil texture	:	Sandy clay - Clay loam		Remarks	:	Thinning 3 times
Soil pH	:	4.5 - 6.5
Soil depth	:	shallow - moderately deep		Vegetation and land utilization before planting	:	Mixed Deciduous Forest
Water level	:	low
3. Seedling information
Seedling	:	Seedling		Size of planting hole (cm)	:	10 x 10 x 15
Provenance	:	Huay Tak Plantation		Fertilization	:	none
Potted	:	Stump		Weeding	:	2 times/year until the sixth year
Stock period	:	1 year		Supplement planting	:	after 3 months and the following year
Pot type/size	:	-		Thining	:	3 times thinning
Forest crown type	:	single storied		Prevention	:	fire protection
Forest floor vegetation	:	Dense
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	:	-