Site Index (S I) is a measurement commonly used by foresters to describe the productivity of a site. It is defined as the average height that free growing, undamaged top height trees of a given species can achieve in 50 years growth above breast height. The higher the site index (S I), the higher the productivity.

Article Influence of site index on the relationship between forest n...

https://www.nrs.fs.fed.us/pubs/gtr/gtr_nrs113.pdf

http://jem-online.org/forrex/index.php/jem/article/viewFile/237/156

https://stud.epsilon.slu.se/6966/11/aagaard_jakobsen_n_140702.pdf

Yes, I am using it in my pest economic models. The site index influences the yield (m3/ha). This is a link to a free yield and economic calculator:

http://forecastercalculator.integral.co.nz/

Thank you Dr Robert Istvan for sharing your work experience which I wanted to know most

This work (English, Spanish) might be useful for you

Regards,

Mauricio Jerez

Hello Jerez,

I would humbly like to say that your work is far ahead than i imagined. Henceforth, i would request you to share some fundamental papers/ books to get familiarize with site index curves

S. Suresh Ramanan

Dear Suresh,

For the basics on site index most forest biometry books cover this topic as a chapter. For example classic books are Avery T and Burkhart HE Forest Measurements or Clutter et al. 1983 Timber Management: A quantitative approach.

For a short, but conceptually strong review of site index and methods you can check the attached document.

Regards,

Mauricio

Hello Jerez,

Thanks for responding again. The paper the you sent was really a good and simple one.

However, i could not access the books that was recommended. Can you help me in any sort on it?

Cheers

S. Suresh Ramanan