FOREST ECOSYSTEM RECOVERY IN 15-YEAR-OLD HYBRID ASPEN (Populus tremula L. × P. tremuloides Michx.) PLANTATIONS ON A RECLAIMED OIL SHALE QUARRY; pp. 368–389

• 出版年: Oil Shale
• 主要な著者: REIMO LUTTER, TEA TULLUS, ARVO TULLUS, Arno Kanal, HARDI TULLUS
• フォーマット: 論文
• 言語: 英語
• 出版事項: Estonian Academy Publishers 2017-11-01
• 主題: populus; oil shale quarry spoil; ecosystem restoration; total nitrogen; understory vegetation; bryophyte.
• オンライン･アクセス: https://kirj.ee/public/oilshale_pdf/2017/issue_4/Oil_Shale-2017-4-368-389.pdf
• ISSN: 0208-189X; 1736-7492

The development of forest ecosystem components (tree layer, under­story vegetation and topsoil) in a reclaimed oil shale quarry was evaluated based on the repeated monitoring of sample plots 5 and 15 years after afforestation with hybrid aspen. Trees had been planted directly on levelled quarry spoil (site group A1) or on quarry spoil with restored topsoil (site group A2). The reference group included hybrid aspen plantations on former arable land (site group B1). Over a decade, the relative tree growth had been slower on A1 and A2 compared to B1. Soil reaction (pHKCl) had decreased and soil total nitrogen (Ntot) had increased on A1. High pHKCl value and low stocks of Ntot, phosphorus (P), manganese (Mn) and boron (B) restricted tree growth on A1. The properties of soil, as well as understory vegetation on A2 were similar to those on B1, which indicates that restored topsoil ensured the faster development of A2 towards the Hepatica forest type.