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I. Liepa

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Author: I. Liepaclear all
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SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Water Resources. Forest, Marine and Ocean Ecosystems
Publication

EFFECTS OF ABIOTIC AND BIOTIC FACTORS ON PEDUNCULATE OAK (QUERCUS ROBUR L.) VITALITY IN VARIOUS FOREST STANDS

(STEF92 Technology, 2020-09-20, Jeļena Rūba, Olga Miezīte, I. Liepa, Linards Sisenis)

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The planted forest stands of pedunculate oak (Quercus roburL.) were carefully cultivated in Latvia for wood harvesting since the end of the 19th century. Today, felling of Q. robur forest stands in Latvia is prohibited, and according to the nature conservation rules are included in the list of habitats of European interest 9160*. According to the State Forest Service [14], the share of oak stands in all forests in Latvia is 0.1% (9354.58 ha). During their lives, oak forest stands are threatened by various risk fac...

Forest Ecosystems2020
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020, Water Resources. Forest, Marine and Ocean Ecosystems
Publication

FACTORS AND TREE DEFECTS INFLUENCING THE CULTIVATION OF YOUNG PINUS SYLVESTRIS L. FOREST STANDS

(STEF92 Technology, 2020-09-20, Olga Miezīte, Jeļena Rūba, I. Liepa)

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In Latvia, Scots pine forests stands occupy 953450 ha or 33% of the total forest area. The percentage of young stands is 18% of pine forests. The young stands under the age of 10 are most represented. Scots pine has always been important for the Latvian economy, since several high-quality assortments can only be made from a quality pine trunk. The quality of the first log shall be formed during the first decade of the tree, therefore it is important to identify, assess and reduce the risk factors for P. sylvestris...

Forest Ecosystems2020
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