The aim of this thesis is to evaluate the influence of edge effect on vegetation succession in black alder forests. 30 permanent study plots with size of 20×50 m were established with strips at several distances from the edge towards the center of the stand. Stands in study plots fell into three categories – with adjacent clearcut to S or SW created up to 10, 20-40 or more than 41 year ago. In all study plots living trees and dead wood was measured and vegetation was described by layers and the presence of rare epiphytic lichens was recorded.
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Library ResourceJournal Articles & BooksDecember, 2017Latvia
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Library ResourceConference Papers & ReportsDecember, 2017Latvia
Degraded territory is land which has been damaged by either industrial and other activities or no activities at all to the stage where any economic activity is impossible unless special renewable measures are implemented. One of the aims of sustainable environment resolutions adopted by the United Nations General Assembly on 25 September, 2015 was ‘to restore degraded land and to aim to achieve having a world neutral to land degradation’. This is the first worldwide document where universal and comprehensive actions regarding land degradation are provided.
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Library ResourceConference Papers & ReportsDecember, 2017Latvia
Soil samples in 349 sampling plots were obtained within the LUCAS project in 2009; from these, 205 soil samples were collected in agricultural lands (grasslands, arable lands, grasslands overgrown by trees and shrubs), and 133 soil samples were obtained in forests (deciduous, coniferous and mixed forests), as well as 7 soil samples–in scrublands.
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