CAJ | 학술논문

为评价春季大旱后鄱阳湖国家级自然保护区浮游生物现状,对保护区所辖8个子湖及赣江和修河部分河段的浮游生物进行调查和分析。调查共发现浮游植物53属97种、浮游动物23属42种(包括原生动物13种、轮虫23种、枝角类3种和桡足类3种),其中大湖池和朱市湖是浮游生物种类数最多的2个子湖。各子湖及赣江和修河间浮游生物现存量差异较大,其变化范围分别为260-(8.18×106) cells/L (浮游植物)、3630-73173 ind./L (浮游动物),赣江以西区域的子湖和修河的浮游生物现存量显著高于赣江及其以东区域的子湖。调查水域优势度值(Y)大于0.02的浮游生物包括蓝藻1种、绿藻2种、硅藻5种、原生动物4种及轮虫5种。浮游生物 Shannon-Wiener多样性指数(H′)和均匀度指数(J)的最大值均分别为2.41和0.96,而其丰富度指数(Dm)值均小于3。3种多样性指数综合评价表明,保护区各子湖与修河和赣江水体受污染程度较轻,除蚌湖和梅西湖外,均处于中污状态。
위평개춘계대한후파양호국가급자연보호구부유생물현상,대보호구소할8개자호급공강화수하부분하단적부유생물진행조사화분석。조사공발현부유식물53속97충、부유동물23속42충(포괄원생동물13충、륜충23충、지각류3충화뇨족류3충),기중대호지화주시호시부유생물충류수최다적2개자호。각자호급공강화수하간부유생물현존량차이교대,기변화범위분별위260-(8.18×106) cells/L (부유식물)、3630-73173 ind./L (부유동물),공강이서구역적자호화수하적부유생물현존량현저고우공강급기이동구역적자호。조사수역우세도치(Y)대우0.02적부유생물포괄람조1충、록조2충、규조5충、원생동물4충급륜충5충。부유생물 Shannon-Wiener다양성지수(H′)화균균도지수(J)적최대치균분별위2.41화0.96,이기봉부도지수(Dm)치균소우3。3충다양성지수종합평개표명,보호구각자호여수하화공강수체수오염정도교경,제방호화매서호외,균처우중오상태。
To evaluate the plankton characteristics of the Poyang Lake National Nature Reserve after the drought oc-curred in spring 2011, the community structure and spatial distribution of plankton in the Poyang Lake National Nature Reserve were investigated and analyzed in August, 2011. A total of 97 phytoplankton and 42 zooplankton species were identified, which belonged to 49 and 23 genera, respectively. The zooplankton were consisted of 13 species of protozoa, 23 species of rotifera, 3 species of cladocera and 3 species of copepoda. The numbers of plankton species in Lake Da-huchi and Zhushihu were more than that of the other lakes and rivers. The abundances of plankton among each lake and river were significantly different, and varied from 260 to8.18×106 cells/L for phytoplankton and 3630 to 73173 ind./L for zooplankton, respectively. The results showed that the abundances of plankton in Xiu River and the lakes that lo-cated at the west of Gan River, were significantly higher than that of Gan River and the other lakes. Statistical analysis indicated that the dominant species of phytoplankton in the Poyang Lake National Nature Reserve wereAnabaena flos-aquae, Scenedesmus quadricauda,S.bijuga,Melosira granulatavar. angustissima,M. granulate,M. graunlatavar. angustissima f. spiralis,Synedra acus andFragilaria capucina,while the dominant species of zooplankton wereStentor amethysinus,Difflugia lobostoma,Centropyxis discoides,Strombidim viride,Brachionus diversicornis,B. bennini, Trichocerca rousseleleti,T. longiseta andAsplanchna girodide. The maximum values of diversity indices (H′) and evenness (J) of both phytoplankton and zooplankton were 2.41 and 0.96, respectively. The values of abundance (Dm) of plankton were both less than 3. Evaluated with the diversity indices (H′), evenness (J) and abundance (Dm) of plankton, the water qualities of lakes and rivers in the Poyang Lake National Nature Reserve wereβ-type of pollution, except Lake Banghu and Meixihu.