Modeling the Effect of Environmental and Topographic Variables Affecting the Height Increment of Norway Spruce Stands in Mountainous Conditions with the Use of LiDAR Data

Radomir Bałazy , Agnieszka Kamińska , Mariusz Ciesielski , Jarosław Socha , Marcin Pierzchalski

Abstract

Differing levels of humidity, sunlight exposure or temperature in different areas of mountain ranges are fundamental to the existence of particular vegetation types. A better understanding of even local variability of trees may bring significant benefits, not only economic, but most of all, nature-related. The main focus of this study was the analysis of relationships between increment in stand height, age and the natural topography in the examined area. Among others, the following were examined with regard to their influence on the growing process: age, altitude above sea level (m a.s.l.), aspect and slope, topographic wetness index (TWI), and topographic position index (TPI) generated from an airborne laser scanning (ALS)-derived elevation model. To precisely calculate forest growth dynamics in mountain conditions for different spruce stands, repeated airborne lidar measurements from 2007 and 2012 were used (with resolution respectively 4 and 6 pts./m2). Detailed information on every stand including species composition, share of individual species, as well as their age, were acquired from the State Forests IT System (SILP). It was proven in this study, that environmental and topographic variables may have an impact on forest growth dynamics on even closely located areas. Apart from the age, the greatest influence on tree growth has an altitude above sea level, aspect and slope. The highest height increment of spruce was observed in the stands of up to 30 years old, those that had grown at an altitude under 850 m a.s.l., on the slopes up to 15 degrees or on those which were on the northeastern exposure. The results obtained show that the physiology of species, even those that are well known, largely depends on local topographic conditions. The proven impact of different topography factors on the growth of spruce may be used while planning economic activities in precision forestry. Additional research with using multiple laser scanning in the context of other regions or other species may bring us better recognition of local growth conditions and in consequence, significantly better planning and higher revenues obtained from the sale of trees.
Author Radomir Bałazy
Radomir Bałazy,,
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, Agnieszka Kamińska
Agnieszka Kamińska,,
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, Mariusz Ciesielski
Mariusz Ciesielski,,
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, Jarosław Socha (FoF / IoFRM / DoBaPoF)
Jarosław Socha,,
- DEPARTMENT OF BIOMETRY AND PRODUCTION OF FOREST
, Marcin Pierzchalski (FoF / IoFRM / DoBaPoF)
Marcin Pierzchalski,,
- DEPARTMENT OF BIOMETRY AND PRODUCTION OF FOREST
Journal seriesRemote Sensing, ISSN 2072-4292, (N/A 100 pkt)
Issue year2019
Vol11
No20
Pages1-15
Publication size in sheets0.7
Article number2407
Keywords in Englishstand growth; LiDAR; increment; mountains; topography; ALS
ASJC Classification1900 General Earth and Planetary Sciences
DOIDOI:10.3390/rs11202407
URL https://www.mdpi.com/2072-4292/11/20/2407
Languageen angielski
LicenseJournal (articles only); author's original; Uznanie Autorstwa (CC-BY); after publication
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Modeling the Effect of Environmental and Topographic Variables Affecting the Height Increment of Norway Spruce Stands in Mountainous Conditions with the Use of LiDAR Data of 06-02-2020
2,47 MB
Score (nominal)100
Score sourcejournalList
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2017 = 1.559; WoS Impact Factor: 2018 = 4.118 (2) - 2018=4.74 (5)
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