Predicting Site Productivity of Mixed Conifer Stands in Northern Idaho from Soil and Topographic Variables

Publisher Website
Google Scholar
Abstract
Characteristics of 32 soils, consisting of an upper sequum influenced by volcanic ash over a buried sequum, and topographic variables were used to develop prediction equations for site index, height, and total volume of mixed coniferous stands in northern Idaho. Soil and topographic variables explained 70% of the variation in site index. Ninety‐four percent of the variation in height of the site trees, and 86% of the variation in total volume of the stand were explained by soil and topographic properties and age. Depth of volcanic ash influence, bulk density, P content, and elevation were important soil and topographic variables.Site index was negatively correlated with elevation, and positively correlated with extractable Ca, exchange acidity, cation exchange capacity, organic matter, total N, soil to rock ratio of the buried soils, and clay of the ash derived soils.
Funding Information
  • McIntire-Stennis Cooperative Research Program (MS-16)

This publication has 1 reference indexed in Scilit: