漢陽地區(qū)五個湖泊沉水植物分布及富營養(yǎng)化現(xiàn)狀
發(fā)布時間:2018-11-04 17:04
【摘要】:2011年7月—2012年4月對武漢市漢陽地區(qū)五個湖泊(后官湖,三角湖,南太子湖,墨水湖和龍陽湖)的水質(zhì)及沉水植物進行了季節(jié)性調(diào)查,以了解湖泊富營養(yǎng)化現(xiàn)狀及其對沉水植物的影響。結果顯示:后官湖為中營養(yǎng),而三角湖、南太子湖、墨水湖和龍陽湖為重度富營養(yǎng),其中龍陽湖污染最重。共采集沉水植物7種,隸屬于5科5屬,主要種類為金魚藻(Ceratophyllum demersum)、苦草(Vallisneria spiralis)和菹草(Potamogeton crispus)。沉水植物主要分布在后官湖沿岸帶,其它四個湖泊中沉水植物已嚴重退化,僅在部分水域偶見。后官湖沉水植物蓋度和生物量最大值出現(xiàn)在10月,分別為67.5%和5.58 kg/m~2,1月份較低,分別為29.3%和1.88 kg/m~2,優(yōu)勢種存在明顯的季節(jié)更替。結果表明,漢陽地區(qū)湖泊沉水植物退化與富營養(yǎng)化引起的水下光照下降和高密度的水產(chǎn)養(yǎng)殖有關。
[Abstract]:From July 2011 to April 2012, a seasonal survey was conducted on the water quality and submerged plants of five lakes (Houguan Lake, Triangle Lake, South Prince Lake, Ink Lake and Longyang Lake) in Hanyang area, Wuhan City. In order to understand the status of eutrophication in lakes and its effect on submerged plants. The results showed that Houguan Lake was medium nutrient, while Triangle Lake, South Prince Lake, Ink Lake and Longyang Lake were heavy eutrophication, among which Longyang Lake was the most polluted. There are 7 species of submerged plants, belonging to 5 families and 5 genera. The main species are (Ceratophyllum demersum), (Vallisneria spiralis) and (Potamogeton crispus). The submerged plants are mainly distributed in the coastal zone of Houguanhu Lake. The submerged plants in the other four lakes have been seriously degraded and only occasionally seen in some water areas. The maximum coverage and biomass of submerged plants in Houguanhu appeared in October, which were 67.5% and 5.58 kg/m~2,1, respectively, with significant seasonal turnover of 29.3% and 1.88 kg/m~2, dominant species, respectively. The results showed that the degradation of submerged plants in lakes in Hanyang area was related to the decline of underwater light caused by eutrophication and the high density of aquaculture.
【作者單位】: 江漢大學生命科學學院;
【基金】:國家自然科學基金項目(40901037) 武漢市市屬高校教研課題(2014007)
【分類號】:X524;X173
本文編號:2310551
[Abstract]:From July 2011 to April 2012, a seasonal survey was conducted on the water quality and submerged plants of five lakes (Houguan Lake, Triangle Lake, South Prince Lake, Ink Lake and Longyang Lake) in Hanyang area, Wuhan City. In order to understand the status of eutrophication in lakes and its effect on submerged plants. The results showed that Houguan Lake was medium nutrient, while Triangle Lake, South Prince Lake, Ink Lake and Longyang Lake were heavy eutrophication, among which Longyang Lake was the most polluted. There are 7 species of submerged plants, belonging to 5 families and 5 genera. The main species are (Ceratophyllum demersum), (Vallisneria spiralis) and (Potamogeton crispus). The submerged plants are mainly distributed in the coastal zone of Houguanhu Lake. The submerged plants in the other four lakes have been seriously degraded and only occasionally seen in some water areas. The maximum coverage and biomass of submerged plants in Houguanhu appeared in October, which were 67.5% and 5.58 kg/m~2,1, respectively, with significant seasonal turnover of 29.3% and 1.88 kg/m~2, dominant species, respectively. The results showed that the degradation of submerged plants in lakes in Hanyang area was related to the decline of underwater light caused by eutrophication and the high density of aquaculture.
【作者單位】: 江漢大學生命科學學院;
【基金】:國家自然科學基金項目(40901037) 武漢市市屬高校教研課題(2014007)
【分類號】:X524;X173
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