THE RELATION BETWEEN VEGETATION AND SOIL CHEMISTRY GRADIENTS IN A GROUND-WATER DISCHARGE FEN

被引：30

作者：

BOEYE, D

VERHEYEN, RF

机构：

[1] Department of Biology, University of Antwerp U1A, Wilrijk, B-2610

来源：

JOURNAL OF VEGETATION SCIENCE | 1994年 / 5卷 / 04期

关键词：

ACIDIFICATION; ALKALINITY; CARICION-DAVALLIANAE; RICH FEN;

D O I：

10.2307/3235982

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The soil chemistry of a headwater valley fen is influenced by local ground water discharge that supplies base cations and alkalinity to the fen. An irrigation canal just upward of the fen is the source of this alkalinity. The ecological consequences of this artificial system are studied both on the soil and vegetation level. Rich-fen species of the alliance Caricion davallianae are connected to soil water alkalinity and soil base status. They depend directly on the alkaline ground water discharge. In addition, the local input of this water causes a gradient-rich pattern from poor to rich fen, and it is therefore concluded that it is responsible for the presence of intermediate fen vegetation too. High nutrient levels in the irrigation water have not influenced the fen until now. This case study illustrates the possibility for rich fen restoration after acidification. Irrigation with alkaline water is efficient if excess nutrients can be removed.

引用

页码：553 / 560

页数：8

共 58 条

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