LY/T 2415-2015Technical regulations for drafting of site index table (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This standard proposed by the State Forestry Administration Forest Resources Management Division.

This standard by the National Forest Resources Standardization Technical Committee.

This standard was drafted. Survey and Design Institute of the State Forestry Administration, the State Forestry Administration Forest Resources Management Division, Northeast Forestry University.

1 Scope

This standard specifies the status index table prepared by the data acquisition and processing, the standard age and other technical parameters to determine the guide curve mathematical model Establish and model evaluation and testing, status index table, status index table test and other technical methods.

This standard applies to the status of the country within the index table, status grade index table preparation, use.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 26424 Forest Resources Planning, Design and Investigation Technical Specification LY/T 2416 Forestry Number Table compiled data collection technical specifications "The main tree species age group and age group"

3 Terms and definitions

The following terms and definitions apply to this document.

Site conditions Synthesis of Natural Ecology and Environmental Factors Affecting Woodland Quality and Tree Growth.

Site quality the production potential of a forest or other vegetation type on a site.

The average wood is meantree; averagetree Forest trees reflect the average level of growth and development of stands or plots.

Dominant wooden dominanttree; dominatingstem Forests in the same generation at the top of the forest layer of trees, usually stand in the canopy expansion to receive the most light, good growth, higher trunk, Thicker diameter of trees.

Advantage high averagetopheight Advantageous wood arithmetic average high.

Referenceage; keyage A specific age to indicate the status index value. Consider the following aspects to determine the baseline age. one after the tree height growth stabilized Logging Age; Logging Age; Half Age of Natural Mature Age; Age at Maximum Volume or Tree Height Average Growth.