The matter in the circle of things is cyclical
The falling red is not a heartless thing, it turns into spring mud to protect the flowers ("Miscellaneous Poems of Jihai" by Gong Zizhen of the Qing Dynasty)
In the ecosystem, elements such as C, H, O, N, and P that make up living organisms are constantly undergoing material cycles. After fallen flowers are decomposed by microorganisms, certain mineral elements return to the inorganic environment and can be reabsorbed by plants.
If you don’t see it, the water of the Yellow River will come up from the sky and rush to the sea never to return (Li Bai of the Tang Dynasty, "Jianjin Wine")
This poem vividly describes the water cycle in the biosphere. Water on the earth's surface, in rivers and oceans will reach the sky above the land in the form of water vapor, and will eventually return to the ground in the form of rain, snow, etc. In this sense, there is a certain truth to "the water of the Yellow River comes up from the sky".
Organisms and the environment are mutually intertwined
The first to get the moon is the tower near the water, and the first to see the flowers and trees in the sun is the spring. (Song Sulin's "Poems to Fan Zhongyan")
During the growth and development process, plants must absorb a certain amount of heat from the environment to complete a certain stage of development. Since sunflowers and trees receive sunlight for a long time, they obtain a certain amount of energy. The time required for heat is short, so it will develop faster.
The beauty of April in the world is gone, and the peach blossoms in the mountain temple are beginning to bloom. ("Peach Blossoms in Dalin Temple" by Bai Juyi of the Tang Dynasty)
The external factors that affect plant flowering are mainly light and temperature. Due to the terrain, the temperature in the mountains is generally lower than that in the plains, so the peach blossoms in the mountains bloom later than in the plains.
Three or two branches of peach blossoms outside the bamboo are a prophet of the warmth of the spring river. (Song Su Shi's "Huichong Chunjiang Xiaojing")
The water in the spring river is warm, and ducks are prophets. The duck's feeling about the water temperature is completely associated with the duck's splashing expression on the water, but it also reflects The influence of temperature, an abiotic factor, on the living habits of ducks.
At the foot of the southern mountain where beans are planted, there are few bean seedlings in the grass. ("Returning to the Garden and Living in the Fields" by Tao Yuanming of the Eastern Jin Dynasty)
In the farmland ecosystem, the relationship between weeds and crops is interspecific competition. Generally, crops cannot compete with weeds. If people neglect management, there will be a situation where "weeds are abundant" and bean sprouts are sparse.
The children hurriedly chased the yellow butterfly, which flew into the cauliflower and was nowhere to be found. ("Two Poems of Xugongdian, Suxin City" by Yang Wanli in the Southern Song Dynasty) The yellow pink butterfly likes to fly among the yellow rape flowers. Because the yellow pink butterfly has the same protective color as the rape flower, it is difficult to find it.