#挑战30天在头条写日记 #
Just as we spent a lot of manpower, material resources and time to capture alligator eels, at present, Canada's yellow flower has also begun to be "hunted down by the whole network", and all parts of the country are surrounding and suppressing this overlord flower, especially the Yangtze River Delta region is the most serious. The reason for this is that they are all invasive species. Today, I will take a look at how harmful is the Canadian goldenrod under the beautiful appearance?
From ornamental flowers to invasive species
Canadian goldenrod, also known as unicorn grass, golden stick grass, calendula, etc., belongs to the cucurbitaceae family, usually about 1 meter in height, with vigorous growth, bright colors and other characteristics. It is an alien species native to North America and has since been introduced as an ornamental flower to Europe and Asia. Seemingly ordinary and beautiful plants, they are actually scourges. Canadian goldenrod has surprising vitality, adapts to a variety of land types, including dry land, desert and seashore, etc., its hardiness, drought tolerance, a huge number of seeds, a Canadian goldenrod can produce more than 20,000 seeds in a growing season, so its adaptability and fecundity are particularly strong, can be described as "yellow flowers bloom a hundred flowers", it has become an invasive species. Alien species are not uncommon in our lives, and corn, potatoes, and even grapes on our tables were once alien species. However, the word "invasion" means that their existence has directly endangered native ecosystems and biodiversity, posing a serious threat to the local ecological environment.
The harm of the Canadian goldenrod
First of all, this plant has strong vitality and reproductive ability, and the combination of asexual reproduction can quickly occupy the habitat space of the original plant and form a large area of biological community, thereby affecting the growth and reproduction of local plants.
Second, the plant competes with other organisms around it for natural resources such as land, water and nutrients. Its growth period is long, and when other autumn weeds wither or stop growing, the Canadian goldenrod is still luxuriant, yellow and green, and the underground rhizome continues to wander, constantly devouring the territory of other weeds, and other weeds are no longer able to compete with it. As a result, local vegetation becomes monolithic, which in turn affects the stability of the ecosystem.
Finally, the Canadian goldenrod can also change the composition of local plant species and the structure and function of ecosystems, causing imbalances in the ecological balance. Goldenrod canadiensis can also release allelopathic substances to inhibit seed germination and seedling growth of other plants, inhibiting native plants and posing a serious threat to biodiversity.
Measures to protect against invasive species
In summary, in order to prevent the invasion and reproduction of Canadian goldenrod and similar species, we need to conduct real-time monitoring and take appropriate removal measures to prevent their spread and reproduction.
First of all, strengthen the construction of ecosystems, protect the diversity and ecological balance of local plants, and fundamentally prevent the invasion and spread of alien species.
Second, educate the public. Strengthen publicity and education on environmental protection, and raise the public's awareness and attention to ecological protection. Advocate that the public do not buy and release animals and plants at will, and jointly become the guardians of ecological civilization! If a Canadian goldenrod is found, it should be reported to the relevant departments in time.
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