2. Northwest China has a dry climate with little rainfall, and the evaporation is four to eleven times that of precipitation. Northwest China, which accounts for 57% of the total area of the west, has a total water resource of 225.4 billion cubic meters, with water resources accounting for only 18% and hydropower resources accounting for only 24.4%.
3. Northwest China is one of the regions with the most serious drought and water shortage in the world. Southwest China has humid climate, abundant rainfall and abundant water conservancy and hydropower resources, but it is very difficult to develop.
4. The western region is the source of major rivers in China. The rational development and utilization of soil erosion, desertification, ecological environment, river water quality, water resources and hydropower resources in the western region is not only related to the western region, but also directly affects the sustainable economic and social development in the eastern, central and even the whole country. Solving the problem of water resources in the west is related to the process of western development.
In addition, the weak water conservancy infrastructure is also the main factor restricting the development of the western region. To speed up the development of the western region, we must speed up the construction of infrastructure such as water conservancy and put the rational development and effective utilization of water resources in a prominent position.
6. The implementation of the strategy of developing the western region by the CPC Central Committee has brought new opportunities and challenges to the development of water conservancy in the western region. To do a good job in the development and utilization of water resources in the western region, we must find a correct position, seize the opportunity, and lose no time to accelerate the pace of water conservancy development in the western region.
Extended data:
Water saving measures:
First, wash vegetables with washed rice first, and then with clear water, which not only saves water, but also effectively removes pesticide residues on vegetables; Water the flowers at home with rice washing water, tea, laundry water, etc. Lowering the floating ball in the toilet water tank by 2 cm can save nearly 3 liters of water each time. According to the calculation of family use 4 times a day, it can save 4380 liters of water a year. The faucet will leak if used for a long time. Use the rubber cover of the small Xilin bottle to cut a gasket the same as the original one and put it in, so as to ensure no water leakage.
Second, if the toilet water tank is too large, it can be replaced with two-piece water tank fittings; The water tank of the toilet leaks, the water inlet valve fails, and the water will flow away from the overflow. The failure of the drain valve will cause long running water in the toilet, and the water inlet pipe will keep supplying water to the water tank; Flush the toilet with clean waste water at home, so that one water can be used for multiple purposes; No matter how big or small the garbage is, it should be removed from the garbage passage, not washed away with water through the toilet.
Third, the tips to solve the toilet leakage: The main reason for the water tank leakage is that the copper wire connecting the handle and the leather cup is often stuck, so that the leather cup can't fall off, and the sewer pipe can't be completely blocked if the leather cup doesn't go down, resulting in water leakage. You can twist the plastic belt into a plastic rope, put the plastic rope through the iron ring on the leather cup and connect it to the rocker arm of the handle. Plastic rope is strong and not afraid of blisters, and it should be changed once every six months. Users with leaking water tanks may wish to have a try.
Fourth, you can wash your feet with face washing water before flushing the toilet; A vat for collecting waste water should be prepared at home, which can completely guarantee the water needed for flushing the toilet; Rice washing water and noodle cooking water are used to wash dishes and chopsticks, which can remove oil and save water; Raising fish and watering flowers can promote the growth of flowers and trees. Although wastewater utilization is easier said than done, it has obvious water-saving effect. It is estimated that a family of three can save about 1 ton of water every month by collecting domestic wastewater such as laundry, bathing and washing for flushing toilets and mopping floors.
5. Don't turn on the tap all the time when washing hands, washing face and brushing teeth, and drain water intermittently. For example, when washing your hands and face, turn off the tap when soaping, and turn off the tap when brushing your teeth.
Six, reduce the number of baths, each bath, control the amount of water, about one-third of the water in the bathtub.
7. When taking a bath, stand in a collection container and collect used water for flushing the toilet or scrubbing the floor. Don't turn on the shower head for a long time. Wet your body and hair first, then turn off the shower nozzle, use shower gel and shampoo, and wash for the last time.
Eight, bathing too often is not good for skin health, and it is most appropriate to wash it 2 ~ 4 times a month. Shower can save 80% more water than bath. Shower intermittently, don't be afraid of trouble when scrubbing, and turn off the water flow in time; The water after bathing can be used for washing clothes, flushing toilets and mopping the floor. When using the shower head to take a bath, master the adjustment of the ratio of cold and hot water; Don't leave the sprinkler on all the time, let alone turn on the water. Take a quick bath, turn off the shower nozzle when your head and feet are wet, wipe it with soap or bath liquid and rinse it immediately; Don't wash clothes "by the way" when taking a bath; Don't fill the bathtub with bath water. 1/3- 1/4 pots are enough.
Reference: Baidu Encyclopedia-China Water Conservancy