Lu network reporter Yin Huili correspondent Nie Jing
the Ming Dynasty, the Ming Dynasty rain, no policy prohibition of the wind. In the late spring, the annoying willows slowly dissipated, and Izumiki Iyo's weeping willows and the dense shade of poplars sent cold greenery to the people. People who like to go to the moat to enjoy the scenery and take a stroll find that there are many moss like clusters floating in the moat.
"moss" is actually algae
these days, the moat water surface of the "moss", so that the public visitors a little worry. On the surface of the clear water, the massive moss float and appear yellow and brown. "Ji'nan's spring drought and less rain, it is the spring water spurt relatively weak, is the moat in the new water is too little, water is not good, so 'moss' is particularly much?" People who go to the spring of the black tiger spring are a little worried.
20 days, the staff of the first spring scenic area around the city explained that these "moss" are not garbage pollutants, but algae. Algae bloom in moat at this time of year, especially this year. The alga of moat is a group of algae formed by filamentous algae and other algae and suspended substances.
algae is an autotrophic organism without chloroplast but photosynthesis, because its cells contain photosynthetic pigments. Spring is the season for the recovery and growth of all things. At the same time, all kinds of plants on both sides of the moat are thriving. As the river water can see the bottom and the light is good, some of the algae that inhabit the bottom of the lake also get the "call" of the sun. The oxygen generated by photosynthesis will form numerous bubbles and gather under the algae. When a certain amount is reached, the sediment "does not hold" the algae mass, and the algae are lifted by these bubbles and arched the water.
this is a good performance of water quality.
is the algae of moat only germinated this year? Not at all銆�
originally, the moat is a landscape river, and it also bears the function of flood control in the city. There are many rainwater outlets to flood the river. For a long time, the water quality of the moat is high and the water quality of the moat is clear, which creates conditions for the growth of algae, which leads to a lot of algae in Hanoi. Algae is not a bad thing. It is a side reflection of the water quality of moat, which is considered as "good news".
it is interesting that when the light is not good and the temperature is lower in the evening, the algae will sink automatically, and when the temperature rises in second, they come back to the surface again. "
" in fact, they do not salvage these algae, and they will sink in the evening, but there are a lot of visitors to the moat river every day, and these floating algae destroy the landscape. " The staff said, we need not worry about algae blooms, just get rid of it.
workers uninterrupted salvage
in the next ten days of March, nearly 30 people and more than ten cleaning boats were arranged every day in the scenic area, and "salvage fishing" on the river surface, at least 10 hours a day.
"algae bloom earlier this year and grow much longer, plus the former poplar willows, and the workers are working hard." Around the city, the relevant responsible person said, spring flying catkins, summer algae bloom, autumn yellow leaves, winter withered branches. Throughout the year, Ji'nan's moat is beset with various kinds of floats. Especially in summer, all kinds of algae on the moat can be floated in a few minutes. For floating objects, there are many ways to salvage the scenic spots, including single boat pushing, single boat intercepting, double boat pulling and floating net and narrow river crossing. In recent days, the daily floating matter in Hanoi has reached nearly 4 tons.