A synthesis of the impacts of ditch network maintenance on the quantity and quality of runoff from drained boreal peatland forests

被引：0
作者：
Mika Nieminen
Marjo Palviainen
Sakari Sarkkola
Ari Laurén
Hannu Marttila
Leena Finér
机构：
[1] Natural Resources Institute Finland,Department of Forest Sciences
[2] University of Helsinki,Water Resources and Environmental Engineering Research Unit
[3] Natural Resources Institute Finland,undefined
[4] University of Oulu,undefined
来源：
Ambio | 2018年 / 47卷
关键词：
DOC; Nitrogen; Phosphorus; Runoff; Suspended solids; Water quality;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Drained peatlands are an important source of forest biomass in boreal regions and ditch network maintenance (DNM) operations may be needed to restore the drainage functions of ditches. By reviewing the available literature, as well as utilizing an existing hydrological model and analyzing the characteristics of eroded sediments, we assessed the impacts of DNM on runoff and exports of suspended solids (SS), dissolved organic carbon (DOC), nitrogen (N), and phosphorus (P). In general, DNM had minor impact on runoff and dissolved N and P, and it decreased rather than increased DOC exports. To increase the understanding of the hydrochemical impacts of DNM, future research should focus on the characteristics of SS and particulate nutrient exports. A major gap in knowledge is also the very limited regional representativeness of the available studies. High erosion risk in the ditches reaching the mineral soil below peat should be acknowledged when planning mitigation measures.
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页码：523 / 534
页数：11
相关论文
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