Scholarly record

TREE STEMS QUALITY AND SANITARY CONDITION OF PINUS SYLVESTRIS L., PICEA ABIES (L.) H. KARST. AND BETULA PENDULA ROTH ON AFFORESTED AGRICULTURAL AREAS

Olga Miezite, Edgars Dubrovskis, Jelena Ruba

Abstract

For unused agricultural land afforestation are several aims like, rational land use, rural landscape diversification, decrement of environment pollution, increasing recreation possibilities and other but also can be established or special purposes planted forest stands as plantation forest. In Latvia during year 2015 State Forest Service (VMD) registered 3.4 thou. ha of afforested agricultural land and 2.7 thou. ha were registered as plantation forests. Aim of research is to analyse sanitary condition of agricultural land afforested with Scots pine, Norway spruce and Silver birch. Age of pine stands was 11 years but spruce and birch stands age was 8 years. For data collection summary were established 44 round sample plots with radius 12.62 m and area of 44.35 ha was evaluated. The most significant damage was detected in young pine stands as disease and vermin, damaged tree damage occurrence was significant (p<0.05). Birch from sanitary condition view is most suitable species for afforestation in agricultural lands. Birch plantations tree damage intensity is not significant (p>0.05). Stem step sons and sinuosity reduce birch stem quality but sinuosity above root collar for spruce.

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