A simple field method for assessing the ecological quality of riparian habitat in rivers and streams: QBR index
A simple field method for assessing the ecological quality of riparian habitat in rivers and streams: QBR index
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评估河流和溪流河岸栖息地生态质量的简单现场方法：QBR 指数
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
M. Rieradevall
中科院分区：
文献类型：
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作者：
A. Munné;N. Prat;C. Sola;N. Bonada;M. Rieradevall
1.
本文提出了一个可用于河流管理的河岸质量指数。该指数的目的是为管理者提供一个简单的方法来评估河岸生境质量。该指数计算简便，可与其他水质指标一起用于评价河流生态状况。它也可能是一个有用的工具，根据欧共体水框架指令定义“高生态状态”。
2.
该指数，命名为QBR，是基于河岸生境的四个组成部分：河岸植被覆盖，覆盖结构，覆盖质量和通道的变化。它还考虑到河流从源头到下游的地貌差异。这些差异是以一种简单、定量的方式衡量的。指数分数在0到100分之间变化。
3.
QBR指数通过双面A4页表格在现场计算，可在10分钟内完成。
4.
QBR指数的发展包括在加泰罗尼亚（西班牙东北部）的四个地中海流域的试验。对72个采样点进行了评估，并将结果用于检验该指数。
5.
应用该指数不需要分类学方面的专门知识，但需要对当地植物群有一定的了解，以区分本地和非本地树种。
6.
这些结果表明，尽管植物群落的区域差异，QBR指数可以使用。当应用该指数时，所获得的质量范围不会受到同一地点观察者的严重影响。
7.
目前，不同的研究小组正在使用该指数，并在对西班牙地中海沿岸沿着12个流域的比较研究中进行测试。
8.
预计QBR指数可以在不改变指数原理的情况下适用于温带和半干旱地区的其他地理区域。
版权所有© 2002年约翰威利父子有限公司。
1.
An index of riparian quality useful for the management of streams and rivers is presented. The purpose of the index is to provide managers with a simple method to evaluate riparian habitat quality. The index is easy to calculate and can be used together with any other index of water quality to assess the ecological status of streams and rivers. It may also be a useful tool for defining ‘high ecological status’ under the EC Water Framework Directive.
2.
The index, named QBR, is based on four components of riparian habitat: total riparian vegetation cover, cover structure, cover quality and channel alterations. It also takes into account differences in the geomorphology of the river from its headwaters to the lower reaches. These differences are measured in a simple, quantitative way. The index score varies between 0 and 100 points.
3.
The QBR index is calculated in the field through a two-sided A4 page form that may be completed in 10 min.
4.
The development of the QBR index included trials in four Mediterranean stream catchments in Catalonia (NE Spain). Seventy-two sampling sites were assessed and results were used to test the index.
5.
No taxonomic expertise is needed to apply the index, although some knowledge of local flora is required to differentiate between native and non-native tree species.
6.
These results show that the QBR index may be used despite regional differences in plant communities. The quality ranges obtained when the index is applied are not heavily influenced by observers at the same site.
7.
At present, the index is being used by different research teams and tested in a comparative study of 12 watersheds along the Mediterranean Spanish coast.
8.
It is expected that the QBR index may be adapted for use in other geographical areas in temperate and semi-arid zones without changes in the index rationale.
Copyright © 2002 John Wiley & Sons, Ltd.