Five years ago today, General Secretary Xi Jinping held a symposium on promoting the development of the Yangtze River Economic Belt in Chongqing, and emphasized that the restoration of the Yangtze River’s ecological environment should be placed in an overwhelming position at present and for a long period of time in the future. .
Today, five years later, the old appearance of the Yangtze River has been changed, and the "Song of the Yangtze River" of high-quality development is played.
Through the analysis of satellite images and remote sensing data, Sike takes you to listen to this concerto that spans China.
Green for the background
a mighty river of water flowing
"A total of major protection, not to engage in major development", the 10-character tells the direction of the protection of the Yangtze River.
Since the founding of New China, especially since the reform and opening up, the economy and society of the Yangtze River Basin have developed rapidly. However, the long-term extensive development has overwhelmed the Yangtze River, and the protection and restoration of the ecological environment cannot be delayed.
In the past five years, new progress has been made in the protection and restoration of the Yangtze River. The rectification of prominent ecological problems has achieved remarkable results. The green ecological corridors on both sides of the strait have been basically completed, and the systems and mechanisms for joint protection have been continuously improved.
The "Mother River", which was severely overdrawn, finally got a chance to breathe.
▲The picture shows Tongluoshan Mine Park, Yubei District, Chongqing.
A few years ago, there was still a devastated group of abandoned mine pits. Under the guidance of the concept of great protection of the Yangtze River Economic Belt, the abandoned mine pit group became "Internet celebrity small Jiuzhai".
Dajiang is silent, and the change has already happened quietly.
As one of the "double kidneys" of the Yangtze River, Poyang Lake has important functions for the ecology of the Yangtze River Basin.
However, since the 1990s, the water quality of Poyang Lake has gradually deteriorated, with indexes such as total phosphorus, total nitrogen, and permanganate exceeding the standard, severe eutrophication and a harsh ecological environment.
To cure the "Yangtze River Disease", Poyang Lake must first "relieve fever."
As the development of the Yangtze River Economic Belt became a national strategy, Poyang Lake began a special ecological environment improvement, and the water quality was significantly improved.
From the satellite remote sensing analysis, it can be clearly seen that in 2020, the chlorophyll a, which represents the stock of algae, in Poyang Lake has decreased compared with 2016, and the eutrophication of the water body in the lake area has been significantly reduced, achieving a lake with clear water into the river.
▲The picture shows the comparison of the concentration of chlorophyll a in the waters of Poyang Lake in 2016 and 2020.
Satellite Data Analysis: Earth Quantum
As of the end of November 2019, the proportion of good water quality in the Yangtze River Economic Belt reached 82.5%, which was 6.1 percentage points higher than the national average; the proportion of poor grade V was 1.2%, which was 2.8 percentage points better than the national average.
Gold is the engine's
vitality and surging
Green is the background color for development.
Over the past five years, green water and green mountains have produced huge ecological, economic, and social benefits, which have greatly enhanced the supporting and leading role of the Yangtze River Economic Belt in supporting high-quality development across the country.
▲Luminous intensity map of the Yangtze River Economic Belt from 1992 to 2018.
Source: National Land Satellite Remote Sensing Application Center, Ministry of Natural Resources
Satellite luminous remote sensing can directly reflect the development level of a region.
The 11 provinces and cities in the Yangtze River Economic Belt carry more than 40% of the country's population with about 20% of the land area, and the economic aggregate accounts for more than 40% of the country.
The change in luminous intensity in the Yangtze River Economic Belt from 1992 to 2018 reflects the important engine role of this region.
In the three city circles, the three growth poles are connected as a belt, and the regional economic development will increase by a multiplier level.
In 2019, the GDP of the Yangtze River Economic Belt region was 4,578.5 billion yuan, a year-on-year increase of 6.9%, accounting for 46.2% of the national economy.
Among the top 10 cities in China's GDP list for the first three quarters of 2020, cities in the Yangtze River Delta Economic Belt occupy 7 places, and the supporting role of the Yangtze River Economic Belt in my country's economy has become increasingly prominent.
▲The GDP of 11 provinces and cities in the Yangtze River Economic Belt in 2019.
From the main battlefield of ecological priority to green development to unblocking the domestic and international dual-circulation aorta, to leading the main force of high-quality economic development, a profound change has begun. The vibrant Yangtze River Economic Belt is surging, and the old appearance is changed. Rise as the main force of high-quality development.
Xinhua News Agency Satellite News Laboratory
Xinhuanet Thinker
Xinhuanet 5G Rich Media Lab
Co-produced
Chief Planner: Zhou Hongjun
Planning: Liu Juan
Producer: Li Xiaoyun
Author: Guo Jianwei Qi Lijun
Drawing: Li Quan Qi Lijun
Satellite Technology: Cui Qiyuan and Hao Ruichen
Data Video: Shu Kefan
Editor: Ma Yucong and Cui Yijing
Proofreading: Sun Hui
Satellite Technology Support Unit: Dadi Quantum
Satellite data source: Jilin No. 1 Gaofen No. 2 Sentinel-2
Technical Coordination: Xu Jia