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研究报告目录 |
溪流粗木质残体的生态学研究进展 |
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| 出 版 社：生态学报 |
| 发表时间：2002，22（1）：87-93 |
| 台 站：
长白山森林生态系统定位研究站
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| 作 者：邓红兵，肖宝英等 |
| 点 击 率：14636 |
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| 关 键 字：粗木质残体,倒木,溪流,河岸带,管理 |
摘 要：粗木质残体（CWD）是森林或溪流生态系统中残存的超过一定直径大小的站杆、倒木、枝桠及根系等死木质物的总称，溪流CWD对于溪流生态系统的稳定、水生生物多样性、河槽形态及其变化过程有着重要的作用。本文对溪流CWD的产生和分类，溪流CWD贮量、分布和动态，以及溪流CWD的功能和管理分别进行了总结。文章最后指出，应尽快在国内开展溪流CWD的研究和管理。
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关 键 字(英文)：Coarse woody debris, Fallen wood, Stream, Riparian, Management
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摘 要(英文)：Coarse woody debris (CWD) is an important, but often neglected ecological component in many terrestrial and aquatic ecosystems, and it is mainly found in the forms of snags, fallen wood, large branches, twigs and roots with diameter more than a certain value in forest ecosystems or stream ecosystems. In forest ecosystems, CWD has many crucial ecological functions such as habitat for organisms, a site for nitrogen fixation, energy flow, and nutrient cycling. Management of streams, lakes, and wetlands in forested ecosystems or watersheds represents one of the most revolutionary changes in forestry in the latter half of the 20th century, so, today, there is widespread agreement that historical forest practices negatively altered the structure of the aquatic ecosystems and decreased their productivity. Along with the continuous development of researches on stream ecosystems and watershed ecology, the intercross and combination of terrestrial ecosystems and aquatic ecosystems researches is a new current in studies on ecosystems. So, although study on CWD is an important aspect in traditional forest ecology, more and more ecologists pay their attentions to in-stream CWD and know the important effects of in-stream CWD in basic study and practical management. While CWD in forest ecosystems turns into stream ecosystems because of natural power or human power, it becomes into in-stream CWD. In-stream CWD is one of the most important and intuitionistic input and disturbance of terrestrial ecosystems on stream ecosystems, and it is the chief connection between terrestrial ecosystems and stream ecosystems. In-stream CWD also plays an important role in stabilization of stream ecosystem, aquatic biology diversity, and channel morphology and its change process. In this paper, based on a mass of references about CWD, the formation and classification of CWD in streams, storage, distribution, trends and its function and management have been summed up respectively, and most of these related researches have been commented. We also pointed out that, although the research on in-stream CWD has not a long history, it becomes more and more important in the relative studies and managements. In China, the relative researches have been mainly focused on CWD in forest ecosystems and litter in aquatic ecosystems from forest ecosystems, and they are far insufficient. So, it is important and imperative to develop researches and managements on CWD in streams quickly in our country.
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