A. Jagodziński, M. Dyderski, P. Horodecki, K. Rawlik, Anna K. Gdula
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引用次数: 0
Abstract
ABSTRACT Succession of woody species on bogs is a process limited by high groundwater table. In the case of drainage, this limiting factor becomes suppressed and succession may accelerate. The aim of the study was to assess the development of tree stands on a raised bog influenced by drainage and wild fire and to assess the dynamics of woody species encroachment. The study was conducted in the ‘Brzozowe Bagno koło Czaplinka’ nature reserve in NW Poland, where the originally unforested peat bog was influenced by peat harvesting, drainage and fire over 100 years. The diameter at breast height of tree species and natural regeneration were assessed. Six types of tree stands were distinguished: open bog, bog forest with Pinus sylvestris, early-, mid- and late-successional bog forest with Betula pubescens and pioneer forest with Populus tremula, which occurred in the post-fire sites. After ca 100 years of human activity on an unforested peat bog, dense forest emerged on almost all of the study area. Drainage and wildfire influenced tree stand structure. The course of succession most probably goes from open bog to pine bog forest and early-, mid- and late-successional birch forests. Regeneration of B. pubescens is a crucial phase of woody species succession, because this species creates suitable conditions for growth of late-successional species.
波兰西北部“Brzozowe Bagno koło Czaplinka”自然保护区排水沼泽中的树种演替
沼泽地木本植物的演替是一个受高地下水位限制的过程。在排水的情况下,这种限制因素会被抑制,演替可能会加速。该研究的目的是评估受排水和野火影响的凸起沼泽地上林分的发育情况,并评估木本物种入侵的动态。这项研究是在波兰西北部的“Brzozowe Bagno koło Czaplinka”自然保护区进行的,在那里,最初未受污染的泥炭沼泽受到了100多年泥炭采集、排水和火灾的影响。对树种的乳高直径和自然再生进行了评估。火灾发生后,可区分出6种类型的林分:开阔沼泽、樟子松沼泽林、毛桦演替早期、中期和晚期沼泽林以及杨柳先锋林。经过大约100年的人类活动,在一片无人开垦的泥炭沼泽地上,几乎所有的研究区域都出现了茂密的森林。排水和野火影响了林分结构。演替过程很可能从开阔沼泽到松沼泽森林以及演替早期、中期和晚期的桦树林。毛白杨的再生是木本物种演替的关键阶段,因为该物种为后期演替物种的生长创造了合适的条件。
期刊介绍:
POLISH JOURNAL OF ECOLOGY (formerly Ekologia polska) publishes original scientific research papers dealing with all aspects of ecology: both fundamental and applied, physiological ecology, evolutionary ecology, ecology of population, community, ecosystem, landscape as well as global ecology. There is no bias regarding taxons, ecosystems or geographical regions.