CCTV1 — --
20260821 212700 UTC
208 transcript segments
Google Cloud Speech-to-Text API (Chirp) + Gemini 2.5 Flash Non-Thinking
Data courtesy of The GDELT Project (https://www.gdeltproject.org/), from the Internet Archive TV News Archive.
Machine transcription. Treat it as a searchable index of what was broadcast, not a verbatim quotation record.

[00:00:05] Everyone holds faith,
[00:00:07] the world is better.
[00:00:11] Faith comes from the heart.
[00:00:29] .
[00:00:50] Every year on this day, the sun's direct rays reach the northernmost point
[00:00:53] of the year.
[00:00:55] .
[00:01:17] The world's second largest desert, the Arabian Desert, spans the desert
[00:01:21] in northern India and southeastern Pakistan. And the desert areas
[00:01:24] at the border between the United States and Mexico.
[00:01:27] .
[00:01:33] Only in southern China is it a scene of lush greenery
[00:01:37] and serene beauty. .
[00:01:50] One of the four famous mountains in southern Li, Dinghu Mountain
[00:01:53] is located here.
[00:01:55] .
[00:02:11] Mr. Bian, Mr. Bian, look, I found a yellow seed. It's a very common
[00:02:15] plant. It's from our walnut family. It was discovered in Guangdong in 1831.
[00:02:19] The yellow walnut plant.
[00:02:22] Its fruit is spherical. The most important feature
[00:02:26] is this structure on the bottom left. We call it the calyx.
[00:02:53] These are all strategies for plant reproduction. .
[00:03:00] Wind chimes are crisp, ancient trees are like a dining hall,
[00:03:02] and waterfalls flow.
[00:03:06] This is not only a holy land for cultural and historical tourism, but also an important
[00:03:10] popular science base for teenagers in the Guangdong-Hong Kong-Macao Greater Bay Area.
[00:03:13] On average, nearly 10,000 teenagers come here every year for research
[00:03:17] and exploration.
[00:03:18] .
[00:03:22] In order to determine the theme and route of the next season's popular science activities
[00:03:25] , the popular science editor of the Dinghu Mountain Nature Reserve Management Bureau
[00:03:29] and Jin Yan invited two plant experts
[00:03:33] to conduct a five-day inspection of Dinghu Mountain.
[00:03:37] We will connect the entire route
[00:03:40] with the fruits or seeds of various plants with Dinghu Mountain characteristics.
[00:03:44] I will take them to discover not only
[00:03:48] the appearance of the seed itself , but also its significance
[00:03:51] to the entire forest ecosystem, including the deeper scientific
[00:03:55] and ethical implications behind it.
[00:03:57] .
[00:04:30] Because of the control of the high-pressure summer heat, it is dry and has little rain throughout the year.
[00:04:34] However, the dragon flag of the Himalayas changed the atmospheric
[00:04:37] circulation in Asia, forming the East Asian summer monsoon,
[00:04:41] bringing abundant moisture to South China,
[00:04:45] plus the uplift of the terrain, creating a vibrant
[00:04:48] and lush primeval forest in Dinghu Mountain.
[00:04:52] .
[00:05:48] Two hundred
[00:05:50] million years ago, it was still under the corner of the night, and today it is still stretching its leaves
[00:05:54] in the ancient gao. .
[00:05:57] It is a kingdom of plants. There are various
[00:06:00] types of species in the car, from small grasses to shrubs
[00:06:04] that are almost as tall as me, and very tall trees. They
[00:06:08] form a three-dimensional garden, providing better
[00:06:12] CCD for other animals. So it is a paradise of life.
[00:06:22] ? This is a device we use to monitor plants after a mistake.
[00:06:26] What is the purpose of our post-event monitoring?
[00:06:30] Through long-term monitoring, we can more accurately
[00:06:34] predict the flowering period of each plant, especially for our tourist scenic
[00:06:37] areas and agricultural plant areas, which are of great
[00:06:41] significance.
[00:06:47] Flowers and trees are nourished by stones, and spring
[00:06:52] returns to the four seasons, doing their work naturally.
[00:06:59] Germination, flowering, fruiting,
[00:07:03] and leaf fall.
[00:07:05] These rhythms of life that change with time
[00:07:09] are the language of nature.
[00:08:01] Because it grows on dark and damp rock walls, it has neither the help of wind
[00:08:04] nor the mediation of animals. Yet it can cleverly complete the task
[00:08:08] of pollination. . In order to reproduce in silence,
[00:08:13] the yellow flower developed a new self-pollination
[00:08:16] mechanism. Pollen slides to pollinate.
[00:08:19] . When the anther opens,
[00:08:23] oily, viscous pollen emerges
[00:08:26] , forming a spherical shape, then connected
[00:08:30] by sticky threads into a bead-like chain, slowly sliding towards the trumpet-shaped
[00:08:33] opening of the stigma, thereby achieving self-pollination.
[00:08:36] Although this short three-millimeter journey takes
[00:08:40] 16.5 hours.
[00:08:43] But its entire process does not rely on any external force, breaking through
[00:08:47] the survival barrier. Afterward, its seeds are scattered by water
[00:08:50] everywhere, waiting for the next year to germinate.
[00:08:53] . In 2004,
[00:08:56] this achievement was published in the internationally renowned scientific
[00:09:00] journal Nature, and was considered to have important scientific
[00:09:04] significance for studying the evolution of flowering plant reproduction.
[00:09:08] .
[00:09:10] Is this not it?
[00:09:43] Dinghu double-flowered vine, Dinghu grass, etc.
[00:09:46] This is the Dinghu hanging orchid discovered
[00:09:50] here in 1928.
[00:09:51] .
[00:09:56] In 1928, botanist Chen Huangyong began
[00:10:00] to establish and preside over the work of the Sun Yat-sen University Peasant Plant Research
[00:10:04] Institute.
[00:10:05] .
[00:12:16] In
[00:12:16] 1979,
[00:12:21] the Dinghu Mountain Nature Reserve was approved by UNESCO as a World Biosphere Reserve. Since then,
[00:12:25] Dinghu Mountain has opened the road to international scientific
[00:12:28] cooperation, and incorporated the biosphere concept into
[00:12:32] protected area management.
[00:12:33] .
[00:12:37] And the biosphere, as the largest ecosystem on Earth, encompasses all life on Earth and its living environment,
[00:12:41] which is of paramount importance to the ecological balance of the Earth.
[00:12:45] .
[00:12:49] Today, more than 2,600 nature reserves
[00:12:53] in China have implemented
[00:13:34] the zoning. Dinghu Mountain began to enter this kind of permanent monitoring scientific research. Li Chengbei. Dinghu Mountain is composed of ten continuous jade mountains,
[00:13:38] covering an area of 115 kilograms, with a vertical belt
[00:13:42] ranging from 14 meters to 1.3 meters in altitude.
[00:13:45] From the foothills to the mountain top, riparian forests
[00:13:49] are distributed.
[00:13:53] Mixed coniferous and broadleaf forests.
[00:14:06] Among them, the monsoon evergreen broadleaf forest is a primeval forest
[00:14:10] with a protection history of more than 400 years. Its area has
[00:14:14] increased from more than 1,900 mu when the nature reserve was established in 1956
[00:14:17] to the current 3,300 mu.
[00:14:20] 目
[00:14:21] .
[00:14:35] when it is small, it is usually those rodents or squirrels and other
[00:14:38] mice.
[00:15:26] Seeing this group of creatures, then it probably determines
[00:15:29] the half-body species below, that is, the species that grow with it below, must adapt
[00:15:33] to the microenvironment it creates. The microenvironment includes ours.
[00:16:37] As the name suggests, it is regarded as
[00:16:40] a symbol of loyalty. The Tang dynasty poet Li
[00:16:43] Bai once used the poem "A pair of white gibbons, buy me a pair of white
[00:16:47] gibbons" to express his love for white gibbons.
[00:16:50] . In the Qing Dynasty, white gibbons
[00:16:54] were embroidered on the official robes of civil officials of the fifth rank, taking
[00:16:58] the meaning of elegance and not being ostentatious.
[00:17:02] Infrared cameras once captured white gibbons, wild boars, and porcupines
[00:17:06] feeding together.
[00:18:08] There's still some edible stuff
[00:18:11] on the ground. That
[00:18:12] person.
[00:18:16] .
[00:18:36] Mountain.
[00:19:07] The saplings have space to grow up.
[00:19:10] . Like the invisible
[00:19:13] insects, or the visible mushrooms, they will also grow at the same time,
[00:19:17] so at this time, what I see is a natural
[00:19:21] cycle, a true continuation of life.
[00:19:23] .
[00:19:26] Giant trees fall, and the decaying wood and fallen leaves turn into nutrients
[00:19:29] to nourish the soil. .
[00:19:33] Saplings, with ample light and abundant moisture,
[00:19:37] and changes in microhabitat, emerge from the shadows into the sunlight,
[00:19:41] gradually forming a new forest structure. This
[00:19:45] is the regenerative power of the natural cycle, and also proof of the healthy
[00:19:49] forest of Dinghu Mountain.
[00:20:00] Old teachers, look, this is the official red bean.
[00:20:03] .
[00:20:37] It is also an important member of the Dinghu Mountain monsoon evergreen broadleaf forest.
[00:20:41] .
[00:21:02] The red bean loves warm and humid conditions, and the subtropical monsoon climate
[00:21:06] has become the most ideal
[00:21:09] .
[00:21:13] In 1998, the red bean was listed in the IUCN
[00:21:17] Red List of Threatened Species. .
[00:21:20] In 1999, it was listed in the first batch of national key protected wild
[00:21:24] plants in China.
[00:21:26] .
[00:21:28] Today, the touch of Chinese red amidst the lush green mountains
[00:21:32] is the most beautiful scenery of Dinghu Mountain. So, what
[00:21:36] mysteries of life have researchers discovered in their monitoring of
[00:21:40] red bean plants? All red beans
[00:21:44] are national second-class protected plants. We recorded
[00:21:47] the altitude of every single one.
[00:23:39] In this way, scientists can press the fast-forward button in the real world
[00:23:42] .
[00:23:44] Observe how forests will respond and adapt
[00:23:48] to climate change in the coming decades. While forests are affected by climate change, Dinghushan is also continuously monitoring the important impact of plants on other aspects of the earth. This platform is called Five Stars, it is 300 meters high. From the type, it belongs to this true powder, but with this slow eye, it can be said to have become
[00:24:18] from our ecology.
[00:25:20] Mitigate global climate change.
[00:25:34] Hurry, hurry!
[00:25:51] Dinghu Mountain's Sky Tower ground view, vertical
[00:25:54] three-dimensional observation platform, is collecting data at a frequency of millions of data points
[00:25:58] per day, tirelessly capturing the forest's every breath.
[00:26:02] Precisely measuring this forest's
[00:26:06] absorption and release of carbon dioxide.
[00:26:09] .
[00:26:13] This is another one of our sacred places. That Mr. Yu is currently
[00:26:16] studying the photosynthesis of plant leaves. Then, through this machine,
[00:26:20] we can measure its photosynthesis rate.
[00:26:22] .
[00:26:25] The rate of photosynthesis does not mean that this single leaf can represent the entire tree.
[00:26:28] . Its photosynthetic rate is very high, but
[00:27:03] the research team of the South China Botanical Garden of the Chinese Academy of Sciences, after 25 years of continuous
[00:27:06] monitoring, found that as a mature forest
[00:27:10] with a protection history of more than 400 years, the monsoon evergreen broadleaf forest
[00:27:13] in Lake Mountain still has a strong
[00:27:17] carbon sequestration function.
[00:27:20] .
[00:27:22] In 2006, this discovery was published in the internationally renowned
[00:27:26] academic journal Science.
[00:27:28] .
[00:29:03] In the depths of Waktu Mountain,
[00:29:15] the seeds of science were quietly planted in the hearts of children.
[00:29:18] It also keeps the story of ecological protection alive
[00:29:22] and well.
[00:29:23] .
[00:29:27] People live up to green mountains, and green mountains live up to people.
[00:29:30] .
[00:29:33] Dinghu Mountain, with hundreds of millions of years of profound history, preserves
[00:29:37] the memory of time, and carries the joy of the future.
[00:30:02] .