期刊
HYDROBIOLOGIA
卷 674, 期 1, 页码 25-40出版社
SPRINGER
DOI: 10.1007/s10750-011-0782-5
关键词
Helophyte biomass; Mire restoration; Peatland rewetting; Nutrient balance; Phragmites australis; Water level
资金
- German federal state of Mecklenburg-Vorpommern [230-5325.60-7-57]
- Deutsche Bundesstiftung Umwelt [25165-35/0]
Rewetting can strongly affect the matter balance of peatlands. Owing to evidence of increasing CH4 emissions and P mobilisation after rewetting, the effects of peatland restoration on climate, eutrophication risks and related controversies are discussed. Our study focuses on the role of helophytes in the carbon and nutrient balance of rewetted fen grasslands of NE Germany. We hypothesise that the helophytes Carex riparia, Glyceria maxima, Phalaris arundinacea, Phragmites australis and Typha latifolia differ in biomass production and nutrient standing stock according to site conditions and harvest time. We analysed the helophyte biomass three times a year and continuously measured water levels and quality. Biomass production, nutrient standing stock and litter accumulation were highly species specific and depended on nutrient availability, mean water levels and harvesting time. We conclude that helophytes store considerable amounts of carbon and temporarily improve the water quality by withdrawing high amounts of nutrients from the top soil during the growing season, and by reducing nutrient discharges. Restoring peatlands as effective nutrient and carbon sinks in the landscape should favour highly productive potentially peat-forming helophytes as Phragmites australis by establishing adequate water levels. If nutrients are to be removed from the degraded peatland, then management can combine the restoration of helophyte stands by rewetting with harvesting measures.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据