The reasons why Danjiangkou should protect water are as follows:

1. danjiangkou city is the core water source area of the Middle Route of South-to-North Water Transfer Project, and water saving is the primary political responsibility of danjiangkou city.

2. danjiangkou city regards serving the South-to-North Water Diversion Project as the top priority for the people of the city. In order to ensure the clear water from one river to the north, more than 60 polluting enterprises have been shut down and rejected, and environmental protection measures such as returning farmland to forests, afforestation, returning farmland to grassland and immigration have been implemented, which has made great contributions to this project.

3. danjiangkou city will continue to deepen the concept of "co-creation", give full play to the fighting bastion role of grass-roots party organizations and the vanguard and exemplary role of party member, guide the whole city to focus on water conservation and protection in terms of ideology, action and measures, and strive to create a new water with green and low-carbon development.

The importance of water

Adult body fluids are composed of water, electrolytes, low molecular organic compounds and protein, which are widely distributed in tissues and cells, forming the internal environment of human body. Among them, intracellular fluid accounts for about 40% of body weight, and extracellular fluid accounts for 20% (including 5% plasma and 15% interstitial fluid).

Water is an essential substance for substance metabolism. Cells must absorb nutrients from tissue fluid, and nutrients can only be fully absorbed if they are dissolved in water. Intermediate products and general end products of substance metabolism must also be transported and eliminated by interstitial fluid.

On the earth, water that can be directly or indirectly used by human beings is an important part of natural resources. Natural water resources include river runoff, groundwater, snow and glaciers, lake water, swamp water and seawater. According to water quality, it is divided into fresh water and salt water. With the development of science and technology, people use more and more water, such as seawater desalination, artificial catalytic precipitation, and the utilization of Antarctic continental ice.

Due to the change of climatic conditions, various water resources are unevenly distributed in time and space, and the natural water resources are not equal to the available water. Reservoirs and underground reservoirs are often used to regulate water storage sources or recycle industrial and domestic sewage to expand the utilization of water resources.

Different from other natural resources, water resources are renewable and can be reused. As well as the quantitative changes within and across the year, have certain cycles and laws; The storage form and movement process are influenced by natural geographical factors and human activities.