Japanese Larch Growth and Yield Data from Long-Term Dutch Studies, 1934-2001

J.J. Jansen of Wageningen University & Research assembled this dataset from four long-term studies on Japanese larch stands in the Netherlands. The data spans from 1934 to 2001 and includes information from 37 thinning research plots, 67 yield table plots, 9 spacing trial plots, and 33 plots from the national forest inventory. The research was supervised by multiple forestry institutes over more than five decades.

Use Cases

• Modeling tree growth and stand development over time based on long-term monitoring data.
• Analyzing the impact of thinning intensity and type on yield based on the described range of thinning degrees.
• Studying the effects of initial planting density on forest production based on spacing trial data.
• Developing or validating yield tables for Japanese larch in temperate regions.
• Conforming time-series analysis of forest inventory data from permanent sample points.

Strengths

• Data spans a long temporal range, with studies initiated as early as 1934 and running for over five decades.
• Combines data from multiple, distinct research projects totaling at least 146 plots.
• Includes a wide range of experimental treatments, such as varying thinning degrees and initial spacing.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for specific modeling tasks.
• Last update date is unknown; freshness unverified.

Provenance

Source

Wageningen University & Research, compiled by J.J. Jansen.

Collection Method

Assembled from four historical studies: thinning research, a yield table study, a spacing trial, and the Dutch National Forest Inventory (HOSP).

Time Range

1934 to 2001

Freshness

Last updated is unknown.

Geography

Netherlands