别布尔扎河流域湿地生态系统养分有效性及水文条件

M. Stelmaszczyk, T. Okruszko, P. Meire
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引用次数: 6

摘要

摘要:别布尔扎河流域湿地生态系统养分有效性及水文条件。本文介绍了别布尔扎河流域选定地点湿地植被的水文条件、养分限制和可利用性的调查结果。被分析地点覆盖的植被有高莎草Magnocaricion植被(Caricetum gracilis和Caricetum elatae)、湿草甸molinium - arrhenatheretea植被(Molinietum caeruleae)和莎草- Scheuchzerio-Caricetea nigrae植被(Caricetum lasiocarpae)。植被类型、水文条件和养分限制种类之间存在着密切的关系。低产量的molinio - arrhenathetea和Scheuchzerio-Caricetea nigrae植被主要依赖地下水,而高产的Magnocaricion植被主要依赖河水,受氮限制。我们发现,在Biebrza河流域不同植被类型的栖息地中,地下水和地表水的水位存在很大的差异。洪泛区存在的Magnocaricion植被的特点是显著的水位波动和长期的淹没。在Molinio-Arrhenatheretea植被覆盖的地区,我们注意到大多数水位不超过地面水平。而Scheuchzerio-Caricetea nigrae植被以地下水为养分,其特点是地下水位变化较小。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Nutrients availability and hydrological conditions of selected wetland ecosystems in the Biebrza river valley
Abstract: Nutrients availability and hydrological conditions of selected wetland ecosystems in the Biebrza river valley. Paper presents results of investigation of hydrological conditions and nutrients limitation and availability for wetland vegetation in selected sites within Biebrza river valley. Analysed sites were overgrown by tall sedge Magnocaricion vegetation (Caricetum gracilis and Caricetum elatae), wet meadow Molinio-Arrhenatheretea vegetation (Molinietum caeruleae), and sedge-moss Scheuchzerio-Caricetea nigrae vegetation (Caricetum lasiocarpae). There were noted a close relationship between vegetation types, hydrological regimes and kind of nutrient limitation. Low productive Molinio-Arrhenatheretea and Scheuchzerio-Caricetea nigrae vegetations fed mainly by groundwater were limited by phosphorus, while highly productive Magnocaricion vegetation, fed by river water, was subjected to nitrogen limitation. We have found big diversification of groundwater and surface water levels within habitats of different vegetation types along the Biebrza river valley. Magnocaricion vegetation present on flooded areas is characterized by significant water level fluctuations and long-lasting inundations. On areas covered by Molinio-Arrhenatheretea vegetation we noted majority of water levels not exceeding the level of the ground surface. Whereas Scheuchzerio-Caricetea nigrae vegetation, fed by groundwater, is characterized by low variation of groundwater levels.
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