Joke Collection Website - Bulletin headlines - We should unswervingly put what in the position of 1 and do our best to maintain the wetland ecology and water environment.
We should unswervingly put what in the position of 1 and do our best to maintain the wetland ecology and water environment.
Brief introduction of wetland ecology:
Wetland ecosystem belongs to water ecosystem. Its biological community is composed of aquatic and terrestrial species, with active material circulation, energy flow, species migration and evolution, and high ecological diversity, species diversity and biological productivity.
20211On February 24th, the Law of People's Republic of China (PRC) on Wetland Protection was adopted at the 32nd meeting of the 13th NPC Standing Committee in People's Republic of China (PRC), and will come into force on June 24th, 2022.
In a narrow sense, the concept of wetland is usually considered as a transitional zone between land and water. In a broad sense, it is defined as all large water bodies on the earth except the ocean (the water depth is more than 6 meters). The definition of wetland in the International Convention on Wetlands is very broad. According to a broad definition, wetlands only occupy 6% of the earth's surface, but provide a survival ring for 20% of the known species on the earth.
It has irreplaceable ecological functions and enjoys the reputation of "kidney of the earth". The wetland area of China accounts for 10% of the world's wetland area, ranking first in Asia and fourth in the world. In China, wetlands are distributed from the cold temperate zone to the tropics, from the coast to the inland, and from the plains to the plateau mountains. There are often many types of wetlands in one area, and one type of wetland is often distributed in many areas.
Brief introduction of water environment:
Water environment refers to the spatial environment in which water is formed, distributed and transformed in nature. It refers to the sum of all kinds of natural factors and related social factors that can directly or indirectly affect human life and development in crowd space and around water bodies. Others refer to the relatively stable environment in which natural waters bounded by land are located.
On the earth's surface, the water area accounts for about 7 1% of the earth's surface area. Water consists of ocean water and land water, accounting for 97.28% and 2.72% of the total water respectively. The latter accounts for a small proportion of the whole, and the environment in the space is very complicated. Water is in a dynamic equilibrium state of continuous circulation on the earth.
The basic chemical composition and content of natural water reflect its original physical and chemical properties in different natural environmental cycles, which is the basic basis for studying the existence, migration and transformation of elements in water environment, environmental quality (or pollution degree) and water quality evaluation. Water environment is mainly composed of surface water environment and groundwater environment.
Surface water environment includes rivers, lakes, reservoirs, oceans, ponds, swamps and glaciers. The groundwater environment includes spring water, shallow groundwater and deep groundwater. Water environment is one of the basic elements of the environment, an important place for the survival and development of human society, and also the most seriously disturbed and destroyed area by human beings. The pollution and destruction of water environment has become one of the main environmental problems in the world today.
- Previous article:Please design a humorous slogan about closing the door behind you.
- Next article:Introduce Xinhuamen
- Related articles
- How to write the opening remarks of live speech skills.
- Couplets on real estate projects
- What is the publicity theme of Cyber Security Publicity Week in 2023?
- Enterprise sewage slogan
- Kindergarten team slogan
- Two Japanese characters on the crater
- Pet-name ruby phishing websites unlock a wave of niche websites, and there are always new lands that you have never set foot in.
- Pharmacy service purpose slogan
- Theme slogan of new year's party in the year of the tiger
- Ye Wen's comments!