Net Primary Productivity and Climate for Khao Chong Tropical Forest

Khao Chong Reserve in southern Thailand provides data on a 500-hectare closed-canopy tropical rainforest. The dataset contains estimated net primary productivity (NPP) of 2,860 g/m2/year, derived from biomass increment monitoring (1962-1965) and litterfall measurements (1962), alongside long-term climate records from nearby weather stations. Data files include one NPP file and three climate files, originally published in 1998.

Use Cases

• Modeling carbon budgets based on measured net primary productivity (2,860 g/m2/year).
• Comparing forest productivity metrics (e.g., biomass increment, litterfall) across tropical regions.
• Correlating ecosystem function with climate variables like mean annual temperature (27.2-27.4 C) and precipitation (1,928-2,696 mm).
• Validating allometric relationships for above-ground biomass estimation using destructive harvest data.
• Assessing the impact of fine root turnover and herbivory exclusions on total NPP estimates.

Strengths

• NPP estimate is based on multi-year field monitoring from 1962 to 1965.
• Allometric relationships for biomass were validated by destructive harvest.
• Includes long-term climate data from two nearby weather stations.
• Data files have been checked for accuracy against the original 1998 publication.

Limitations

• Key metadata (column names, row counts, file size) is missing from all sources.
• There is a conflict in dataset freshness: one platform shows a 2026 update to documentation, while another indicates data is from 1998.
• NPP estimate excludes fine root turnover and herbivory, which may lead to underestimation.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Field measurements of biomass increment and litterfall, supplemented by weather station climate data.

Time Range

1962 to 1965 for primary NPP measurements; climate data temporal coverage is not specified.

Freshness

Documentation updated 2026-04-09; underlying data identical to 1998 publication.

Geography

Khao Chong Reserve, Thailand (7.58 N 99.8 E); climate data from Songkhla (7.2 N 100.6 E) and Trang (7.52 N 99.62 E), Thailand.