CAJ | 학술논문

为了解不同环境因素对水库内直链藻(Melosira)垂向分布的影响程度，作者利用自制沉降柱实验模拟不同光照、水动力以及降雨条件对水中直链藻垂向分布的影响。通过单因素方差分析实验数据表明光照和降雨条件的改变对上浮区内直链藻的垂向分布具有显著影响，底部出流流量的改变对下沉区内直链藻的垂向分布具有显著影响。随着水深的增加，光照和降雨对水中直链藻垂向分布的影响减弱而水动力则对其影响增强。同时还验证了直链藻具有较强的趋光性，宜在低光强环境内生长，模拟测得其最适光强在3000 lx左右；降雨对水中直链藻的垂向分布起到抑制作用，降雨强度越大水中直链藻就越偏离水体表面；在底部出流流量影响范围内，随着出流流量的增大水中直链藻就越向水动力改变处聚集且稳定时间越短。
위료해불동배경인소대수고내직련조(Melosira)수향분포적영향정도，작자이용자제침강주실험모의불동광조、수동력이급강우조건대수중직련조수향분포적영향。통과단인소방차분석실험수거표명광조화강우조건적개변대상부구내직련조적수향분포구유현저영향，저부출류류량적개변대하침구내직련조적수향분포구유현저영향。수착수심적증가，광조화강우대수중직련조수향분포적영향감약이수동력칙대기영향증강。동시환험증료직련조구유교강적추광성，의재저광강배경내생장，모의측득기최괄광강재3000 lx좌우；강우대수중직련조적수향분포기도억제작용，강우강도월대수중직련조취월편리수체표면；재저부출류류량영향범위내，수착출류류량적증대수중직련조취월향수동력개변처취집차은정시간월단。
In order to understand the effects of environmental factors on the vertical distribution ofMelosira in reservoir, the self-made settlement column experiment was used to simulate the influence of different light, water power and rain-fall conditions on vertical distribution ofMelosirain water. Data analysis using one-way ANOVA showed that light and rainfall conditions significantly changed the vertical distribution ofMelosira in the floating zone , and the bottom flow significantly changed vertical distribution ofMelosira in the sinking zone. With the increase in water depth, light and rainfall, the influence on the vertical distribution ofMelosirain water was weakened and hydrodynamic was enhanced. At the same time,Melosira was verified to have strong phototaxis and was suitable for growth in the low light environ-ment with the optimal intensity of around 3 000 lx rainfall inhibited the vertical distribution ofMelosirain water. Melosira was deviated from the water surface with the increase in rainfall intensity. In the bottom flow effect range, with the increase in water flow in water, the hydrodynamic change ofMelosira was more and the stable time was shorter.