Preamble:
In nature, some plants have tenacious vitality despite the harsh growth environment, can survive in harsh environments, and have the characteristics of rapid spread. These plants are known as "green killers", and their spread will not only cause damage to the ecological environment, but also have a great impact on human production and life. For example, spiny sand and tumbleweed are two typical "green killers".
1. Thorn Sapong invades the United States
Spinosaphorn, native to the Siberian region of Russia, was mistaken for an ornamental plant in the 70s of the 19th century and was introduced to the United States, where it rapidly expanded and became an invasive species. It can survive in harsh environments, and has a tenacious vitality, drifting around with the wind, once it takes root, it grows rapidly, and can grow to more than 2 meters tall, bringing a huge impact on life and agriculture in the western United States. It will accumulate on houses and roads, cause traffic jams and accidents, occupy farmland, rob soil nutrients, and cause serious damage to the local ecological environment. Although the U.S. government has tried to control the spread of spiny saphorn, such as spraying with chemicals and removing it with machinery, they have not been effective, and on the contrary, these practices have had side effects on the local ecology and pose a threat to other plants and animals.
2. Tumbleweeds invade China
Tumbleweed is another "green killer" that can also survive in harsh environments and is characterized by rapid spreading. In recent years, tumbleweeds have begun to appear in some parts of China, which has caused many people to worry. The spread of tumbleweeds will have a huge impact on the local ecology and agricultural production. First of all, the spread of tumbleweeds requires a lot of water, and a single tumbleweed needs more than 200 litres of water per year, which will cause a huge consumption of local water resources, accelerating soil loss and desertification. Secondly, the surface of the seeds of tumbleweed is covered with fine hairs, which can cause damage to human skin and respiratory tract, and can easily cause allergies and respiratory diseases. Once tumbleweed spreads over a large area, it will bring great threats to the local ecological environment and human health.
3. Make good use of the power of nature and live in harmony with nature
How can we effectively prevent and control invasive species such as S. spinosa and tumbleweed? We can learn from China's practice and make good use of the power of nature to control the spread of invasive species. In China, due to the differences in geographical environment and ecosystem, tumbleweed is difficult to spread widely in China, because China already has some natural enemies against tumbleweed, such as tumbleweed herbivores and insects, they can effectively control the number of tumbleweeds, play a role in biological prevention and control, and form a dynamic balance with tumbleweeds, which gives humans a vivid ecological lesson, telling us that in the face of all creatures in nature, we should not simply and rudely use human means to control, but should make good use of the power of nature, and live in harmony with nature, so as to achieve the sustainable and stable development of the ecological environment。