Browsing NIBIO Brage by Journals "Forest Ecosystems"
Now showing items 1-9 of 9
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A century of National Forest Inventory in Norway – informing past, present, and future decisions
(Peer reviewed; Journal article, 2020-07-17)Past: In the early twentieth century, forestry was one of the most important sectors in Norway and an agitated discussion about the perceived decline of forest resources due to over-exploitation was ongoing. To base the ... -
Comparison of estimators of variance for forest inventories with systematic sampling - results from artificial populations
(Peer reviewed; Journal article, 2020-03-23)Background: Large area forest inventories often use regular grids (with a single random start) of sample locations to ensure a uniform sampling intensity across the space of the surveyed populations. A design-unbiased ... -
Examining approaches for modeling individual tree growth response to thinning in Norway spruce
(Peer reviewed; Journal article, 2022-08-02)Using periodic measurements from permanent plots in non-thinned and thinned Norway spruce (Picea abies (L.) H. Karst.) stands in Norway, individual-tree growth models were developed to predict annual diameter increment, ... -
Large scale mapping of forest attributes using heterogeneous sets of airborne laser scanning and National Forest Inventory data
(Peer reviewed; Journal article, 2021-09-29)Background The Norwegian forest resource map (SR16) maps forest attributes by combining national forest inventory (NFI), airborne laser scanning (ALS) and other remotely sensed data. While the ALS data were acquired over ... -
Longitudinal height-diameter curves for Norway spruce, Scots pine and silver birch in Norway based on shape constraint additive regression models
(Journal article; Peer reviewed, 2018-02-12)Background: Generalized height-diameter curves based on a re-parameterized version of the Korf function for Norway spruce (Picea abies (L.) Karst.), Scots pine (Pinus sylvestris L.) and silver birch (Betula pendula Roth) ... -
Mapping forest age using National Forest Inventory, airborne laser scanning, and Sentinel-2 data
(Peer reviewed; Journal article, 2020-11-10)Background The age of forest stands is critical information for forest management and conservation, for example for growth modelling, timing of management activities and harvesting, or decisions about protection areas. ... -
The Siberian moth (Dendrolimus sibiricus), a pest risk assessment for Norway
(Peer reviewed; Journal article, 2020-07-27)Background The Siberian moth (Dendrolimus sibiricus) is a serious pest of conifers in Russia, Northern Kazakhstan, Mongolia and China. The western border of the pest’s distribution in Russia is disputed, but it is present ... -
Tree growth is more limited by drought in rear-edge forests most of the times
(Peer reviewed; Journal article, 2021-04-08)Background Equatorward, rear-edge tree populations are natural monitors to estimate species vulnerability to climate change. According to biogeographical theory, exposition to drought events increases with increasing aridity ... -
Use of models in large-area forest surveys: comparing model-assisted, model-based and hybrid estimation
(Journal article; Peer reviewed, 2016)This paper focuses on the use of models for increasing the precision of estimators in large-area forest surveys. It is motivated by the increasing availability of remotely sensed data, which facilitates the development of ...