水生生物学报
水生生物學報
수생생물학보
ACTA HYDROBIOLOGICA SINICA
2014年
3期
510-515
,共6页
生态幅%斜生栅藻%最佳氮浓度%氮适宜生长范围%氮耐受范围
生態幅%斜生柵藻%最佳氮濃度%氮適宜生長範圍%氮耐受範圍
생태폭%사생책조%최가담농도%담괄의생장범위%담내수범위
Ecological amplitude%Scendesmus obliquus%Optimum nitrate concentrations%Optimum growth range of nitrate concentrations%Tolerance range of nitrate concentrations
为获得斜生栅藻(Scendesmus obliquus)的氮生态幅,研究根据中华人民共和国地表水环境质量标准磷浓度界定,利用谢尔福德(Shelford)耐受定律进行曲线拟合对斜生栅藻在低磷(0.02 mg/L)、中磷(0.2 mg/L)和高磷(0.4 mg/L)三种不同磷浓度下氮的生态幅进行定量表达,获得三种磷起始条件下斜生栅藻生长的最佳氮浓度、氮适宜生长范围和氮耐受范围。研究表明,在三种磷条件下斜生栅藻生长的最佳氮浓度分别为1.02、8.91和18.05 mg/L,对应的最大比生长速率分别为(0.142±0.006)、(0.314±0.002)和(0.346±0.007)/d,氮适宜生长范围分别为(0.52-1.52)、(4.48-13.34)和(11.72-24.38) mg/L,氮耐受限度分别为(0.02-2.02)、(0.05-17.77)和(5.39-30.71) mg/L。这表明富营养化水体可能引起斜生栅藻的大量生长、繁殖,也暗示了斜生栅藻能作为高氮水环境的一个良好指示生物。
為穫得斜生柵藻(Scendesmus obliquus)的氮生態幅,研究根據中華人民共和國地錶水環境質量標準燐濃度界定,利用謝爾福德(Shelford)耐受定律進行麯線擬閤對斜生柵藻在低燐(0.02 mg/L)、中燐(0.2 mg/L)和高燐(0.4 mg/L)三種不同燐濃度下氮的生態幅進行定量錶達,穫得三種燐起始條件下斜生柵藻生長的最佳氮濃度、氮適宜生長範圍和氮耐受範圍。研究錶明,在三種燐條件下斜生柵藻生長的最佳氮濃度分彆為1.02、8.91和18.05 mg/L,對應的最大比生長速率分彆為(0.142±0.006)、(0.314±0.002)和(0.346±0.007)/d,氮適宜生長範圍分彆為(0.52-1.52)、(4.48-13.34)和(11.72-24.38) mg/L,氮耐受限度分彆為(0.02-2.02)、(0.05-17.77)和(5.39-30.71) mg/L。這錶明富營養化水體可能引起斜生柵藻的大量生長、繁殖,也暗示瞭斜生柵藻能作為高氮水環境的一箇良好指示生物。
위획득사생책조(Scendesmus obliquus)적담생태폭,연구근거중화인민공화국지표수배경질량표준린농도계정,이용사이복덕(Shelford)내수정률진행곡선의합대사생책조재저린(0.02 mg/L)、중린(0.2 mg/L)화고린(0.4 mg/L)삼충불동린농도하담적생태폭진행정량표체,획득삼충린기시조건하사생책조생장적최가담농도、담괄의생장범위화담내수범위。연구표명,재삼충린조건하사생책조생장적최가담농도분별위1.02、8.91화18.05 mg/L,대응적최대비생장속솔분별위(0.142±0.006)、(0.314±0.002)화(0.346±0.007)/d,담괄의생장범위분별위(0.52-1.52)、(4.48-13.34)화(11.72-24.38) mg/L,담내수한도분별위(0.02-2.02)、(0.05-17.77)화(5.39-30.71) mg/L。저표명부영양화수체가능인기사생책조적대량생장、번식,야암시료사생책조능작위고담수배경적일개량호지시생물。
The present study was conducted to calculate the ecological amplitude of nitrate and to obtain the optimum nitrate concentrations, optimum growth, and tolerance range of nitrate concentrations during the growth of Scendesmus obliquus. Three fixed initial phosphate concentrations [0.02 mg/L (low-P), 0.2 mg/L (medium-P) and 0.4 mg/L (high-P)] were carried out based on the surface water environmental quality standard of the People’s Republic of China. A nitrate tolerance model of the algal growth was established based on the Shelford’s law of tolerance. The results showed that the optimum nitrate concentrations in low-P, medium-P, and high-P cultures were 1.02, 8.91 and 18.05 mg/L, respec-tively; the optimum growth range of nitrate concentrations were (0.142±0.006), (0.314±0.002) and 0.346±0.007/d, re-spectively; the tolerance range of nitrate concentrations were (0.02—2.02), (0.05—17.77) and 5.39—30.71 mg/L, re-spectively. These results suggest that water pollution may promote the growth and production of Scendesmus obliquus, and Scendesmus obliquus may be a good indicator for the high nitrogen water environment.
