Allometries for Widely Spaced Populus ssp. and Betula ssp. in Nurse Crop Systems
Citations Over TimeTop 17% of 2013 papers
Abstract
Nurse crops of widely spaced pioneer trees are a silvicultural approach to protect the regeneration of frost sensitive target tree species. If overstorey nurse crops are harvested, they can provide additional short-term benefits through increased biomass production, e.g., for bioenergy. However, the intensification of biomass exports from forests might impact negatively on ecosystem nutrient pools. Thus, precise allometric biomass equations are required to quantify biomass and nutrient removals. Since an analysis of published allometric equations developed for typical, dense aspen or birch forests showed that the tree height-to-diameter ratio correlated positively and the proportion of branch biomass negatively with stand density, we developed new allometric biomass equations for widely spaced aspen and birch growing at 4 x 4 m spacing. These equations yielded a root mean squared error of 13% when predicting total aboveground woody biomass for our sample trees. In contrast, the corresponding root mean squared error produced by allometric biomass equations from the literature ranged between 17% to 106% of actual dry biomass. Our results show that specific allometric biomass equations are needed for widely spaced pioneer trees both for accurate estimates of biomass and the nutrients contained within.
Related Papers
- → Allometric equations for estimating the aboveground volume of five common urban street tree species in Daegu, Korea(2013)87 cited
- → Allometric equations for pioneer tree species and estimation of the aboveground biomass of a tropical secondary forest in East Kalimantan(2004)41 cited
- → Biomass increases attributed to both faster tree growth and altered allometric relationships under long‐term carbon dioxide enrichment at a temperate forest(2019)16 cited
- → A critical review and database of biomass and volume allometric equation for trees and shrubs of Bangladesh(2016)18 cited
- → Development of Allometric Equation for Estimating Aboveground Biomass in Ampang Forest Reserve,Malaysia(2017)4 cited