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保安湖水生植被的研究
葛耀文
Subtype硕士
Thesis Advisor刘建康
1988
Degree Grantor中国科学院水生生物研究所
Place of Conferral水生生物研究所
Degree Discipline水生生物学
Keyword保安湖 水生植被 生物量
Abstract本文列出了保安湖43种水生维管束植物的名录,叙述了水生植被的分布。保安湖水生植被的面积为59000亩,占合湖总面积(61540亩)的95.99%;湖中植被呈不规则环状带分布,并可划分为湿生、浮叶和沉水3个植物带,6个主要植物群丛。沉水植物群是保安湖水生植被最重要的类型,其分布面积与该湖水生植被的面积相当。优势种为黄丝草(微齿眼子菜),聚草(艹杂),苦草和菹草。保安湖水生植被的另一特点是挺水植物缺乏,几乎不形成群落。用样方法测定了保安湖沉水植物的生物量。根据9个断面,80个采集点,160个样方的测定结果,得到了保安湖沉水植物生物量的湿重和烘干重及其季节变化值。生物量的最大值在9月,为82104.1吨(湿重)或6404.1吨(烘干重)。黄丝草的生物量是第一位的,为沉水植物总生物量的65.6%(湿重)和78.5%(烘干重);聚草的生物量是第二位的,为沉水植物总生物量的32.996(湿重)和20.6%(烘干重)。两者的生物量达沉水植物总生物量的98.5%(湿重)或99.1%(烘干重)。为利用沉水植物防治湖泊营养化提供基础资料,本文研究了黄丝草、聚草的氨、磷含量及其季节变化。黄丝草烘干重的氨的含量为1.61-2.50%,平均值为2.07%;磷的含量为0.725-2.67‰,平均值为1.63‰。聚草的氨的含量为1.27-2.57%,平均值为1.27-2.57%,平均值为1.70%,磷的含量为1.39-3.02‰,平均值为1.98%。因此,若保安湖水生植物资源利用合理,则每年至少有127吨的氨和11吨的磷被从湖中去除,这是保证该湖成为良好的渔业水体的主要因素之一。本文还初步研究了黄丝草、聚草的生长规律,给出了优势水生植物湿重和烘干重的换算关系,探讨了水生植物在湖泊渔业上的合理利用问题。本文最后探讨了保安湖水生植物的特殊生态现象,并对该湖经济水生植物资源的开发、利用和保护提出了建议。
Other AbstractBaoan Lake is located in the southeast of Hubei Province, which is noted for its numerous shallow lakes characteristic of the middle and lower Yangtze valley. It covers a surface area of about 61540 mu(41.03 square kilometres), with a drainage basin of 75000 mu(50.00 square kilometres). A survey yields the sum total of 47 species, belonging to 31 genera and 21 families. The vegetation has a distribution of about 59000 mu (39.34 square kilometres) and accounts for 95.99% of the lake's area. It consists of 3 plantzones and exhibits irregular zonation. According to the assemblage of the varioug species, aquatic vegetation of Baoan Lake may be grouped into 6 associations. The submerged vegetation is the most important one in this lake. The dominant species are Potamogeton maackianus, Myriophyllum spicatum, Vallisneria spiralis and Potamogeton crispus. The lack of emergent nacrophytes is another feature of the vegetation. Data on biomass, based on sampling along 9 transects (involving 80 sampling points, 160 quadrants), are presented. The maximum of biomass occurs in Augusi-September, reaching 82104.1 lons(wel weinght) or 6404.1 tons (dry weight). The biomass of Potamogeton maackianus plus Myriophyllum spicatum accounts for 98.5%(wet weight) or 99.1% (dry weight) of the total. The contents of nitrogen and phosphorus of potamogeton maackinus and Myriophyllum sicatum are determined and their seasonal variation are discussed. The content of nitrogen is 1.61-2.50%(with a mean of 2.07%), and the content of phosphorus is 0.725-2.67%(with a mean of 1.63%) in Botamogeton maackianus. The content of nitrogen is 1.27-2.57%(with a mean of 1.70%), and the content of phosphorus is 1.39-3.02‰(with a mean of 1.98%) in Myriophyllum spicatum. So the two species accumulate at least 127 tons of nitrogen and 11 tons of phosphorus from the lake, which is an important factor making the lake a fine fishery water body. The growth of Potamogeton maackinus, Myriophyllum spicatum and Vallisheria spiralis is studied in this paper also discusses the correct of the macrophytes in fisheries. The last of this paper deals with special ecological phenomena of the macrophytes in the lake. And suggestions are made on the exploitation and protection of the economic macrophytes in Baoan Lake.
Pages64
Language中文
Document Type学位论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/12734
Collection学位论文
Recommended Citation
GB/T 7714
葛耀文. 保安湖水生植被的研究[D]. 水生生物研究所. 中国科学院水生生物研究所,1988.
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