I want to talk about the so-called savanna in Africa. If such a savanna is uprooted, the savanna will simply have no savanna and no trees. This tree is only one or two meters high, and although it has a trunk, it looks like a shrub with many branches. The first thing that caught my eye was a small bag of feather-like yarns hanging from the trunk. It was about ten centimeters in size, spindle-shaped, with white flowers and fluffy furry, as if it was a kind of entangled bird nest.
The tree has not grown leaves yet, but fortunately the branches are not alone. Its brown skeleton was covered with dense spikes. Each nail is about four centimeters long, with a very sharp tip, as hard as iron. At this moment, due to the close proximity, I can clearly see the details of that bird’s nest, and there is a bird in the nest.
It’s just … I was very scared to find that the bird was dead. If it were death alone, it wouldn’t make me so creepy. It died abnormally and was strangled by this bird’s nest-like suspension. This dead bird is very light and will shake in the breeze. In other words, it is already an empty shell. So, where did its flesh go?
With a lot of questions in my stomach, I trudged deeper and deeper into the wild grass. Suddenly, I was pinched by a strong arm—a female sweaty arm covered with golden sweat.
She asked sternly, “Where are you going?”
I said, “I want to see the bird’s nest over there.”
She was taking care of everyone’s afternoon tea, and glanced at my unorganized and undisciplined behavior, three or two steps Come over. She sighed and said, “It’s not a bird’s nest, it’s a bird’s grave. It’s a large spider. You see, there are celestial webs under them.”
Sure enough, there are looming cobwebs floating on branches. , But they are soft and boneless. The flying birds are free and lively, and they are very aggressive. How can spiders have such great power to catch them?
The female inspector saw my doubts and said, “This bird-eating spider is very large, with six eyes and eight pairs of legs. It will spray webs, and the spider silk will have a high protein content and is very strong. Tough, can bear 4000 times the weight of the spider. It lays the net and hides it. If small insects stick to the web, bird-eating spiders do not eat them, leaving them struggling to make bait. Birds see small Insects will fly over. When the birds are exhausted, the bird-eating spider will crawl over and secrete the venom to anesthetize the prey. Then the bird-eating spider will keep spinning until the bird is tied tightly and wrapped tightly. It looks like a Christmas gift. ”
I exclaimed:” When this bird-like thing was knitted, was the bird still alive? “The
female inspector said,” Yes, it can see the sky, But it can no longer fly in the sky. Its flesh will soon be dissolved by the spider venom. At this time, the bird-eating spider will slowly enjoy the bird in peace like a child sucks yogurt. ”
Visible killing and invisible The plot lurks around us, and it’s creepy.
The female ranger said, “You don’t have to be sad, nature is like this, like these trees, it ’s the dining table for
elephants .” Elephants love to eat this kind of tree, even the tree’s belt twigs, and even the sharp ones on this branch. The nails were also rolled into the belly. In this regard, I can only say that the gastric mucosa of an elephant must be like iron sandpaper.
The female ranger smiled happily: “The elephant’s saliva is very thick and can wrap the sharp locust and protect itself from harm.”
I screamed and said, “You mean such a tree full of nails. Called locust? ”
” Yeah. Locust originated from Africa. “The female inspector gave me a look, surprised by my surprise.
Due to the widespread distribution of the Peking Opera “Yutang Spring”, Hong Dong is widely known. There is an old locust tree in Hongdong. We seem to think that the old locust tree is a Chinese specialty. Robinia pseudoacacia growing on African land is called acacia in China.
According to some sources, Robinia pseudoacacia is a tree up to 25 meters high, but the Robinia pseudoacacia I see in Africa are several meters high. Is it because the elephants, giraffes, zebras and other animals have eaten so much that acacia no longer grows tall?
It turns out that acacia is for people to eat dishes!
If the annual precipitation is 200-700 mm, the Robinia pseudoacacia can thrive and become a large tree.
If the annual precipitation is less than 200 mm, it will turn into a bush state. But don’t look at it getting short, but it grows fast and has a dense canopy, which can even exceed the poplar that is famous for fast growing.
Robinia pseudoacacia is simple and hard-working, can grow on arid and barren gravel and slag, and can tolerate 3 ‰ soil salt content. It has rhizobium, which can fix nitrogen, self-fertilize, and self-nutrient.
Acacia has thus become a beneficiary of the animals on the savanna, providing a biological habitat for the jungle area, providing food, and becoming a hotel and dining table.
The vibrant female inspector said with a smile: “According to the latest findings of scientists, locusts will be harmed if some animals do not gnaw the leaves.”
I was puzzled: “How can this be? Robinia pseudoacacia has a tendency to masochistic? Animals do n’t come to eat, but it is uncomfortable?” The
female patrolman said, “Since 1995, six locust trees Enclose it with a charged barbed wire to prevent any animal from eating the leaves of Robinia pseudoacacia. They also found six Robinia pseudoacacia trees as a reference and exposed them to the wild for giraffes, elephants, and other herbivores. Many years have passed, It turned out that not only did the six locust trees protected by barbed wire not grow taller, but the mortality rate was twice as high as the locust trees that were not surrounded. ”
I wondered,” Why is this? “The
female inspector said: “They were attacked by ants. Ants attracted Monochamus alternatus, which would damage the bark of the locust tree, slow down the growth rate of the locust tree, and increase the mortality rate. Robinia pseudoacacia, which is constantly being eaten, will not cause this Ants. ”
It turned out to be a cycle diagram of nature’s secrets!
I said, “When you see a weak animal dying, will it provoke the urge to save them and stop the tragedy?”
She said, “Yes, this feeling is mainly concentrated at the beginning of work. I once saw a lion about to eat a baby giraffe, and I rescued the baby deer. But then I understood that if this weak creature did not die, that large animal would die. Nature has already run like this For countless years, it has its own truth. To change it at will, it is human arrogance. Now, I can look at this reincarnation peacefully and peacefully. “