"Saving and Protecting Water Resources" PPT

Description

"Saving and Protecting Water Resources" PPT

Part One: Import

Why is the "Mother's Water Cellar" project implemented in western my country?

A water cellar is a cellar used to collect rainwater. In order to help people in poverty-stricken areas in the west solve their drinking water difficulties, the state has raised funds from various sources to build water cellars, which are called "mother water cellars".

distribution of water resources

As the saying goes: It rains from the sky and flows from the ground. Water resources on land mainly come from atmospheric precipitation. The seasonal variation of precipitation in my country is large and the regional distribution is uneven, causing water resources to show uneven distribution in time and space.

From the perspective of time distribution, in summer and autumn, most areas of our country have more precipitation and river water volume. During the flood season, a large amount of precious water resources not only flow into the sea in vain, but also floods are frequent. In winter and spring, precipitation is low, and river water volume is small. Some rivers even The rivers are drying up and water shortages are serious. In addition, the interannual variability of precipitation in my country is relatively large, resulting in large differences in river flow in different years.

From the perspective of spatial distribution, my country's water resources generally show a decreasing trend from the southeastern coast to the northwest inland. The southern region of my country, especially the Yangtze River Basin, is rich in water resources, while the northern region, especially the North China Plain, has less water resources. The inland northwest region is the region with the poorest water resources in my country.

Features: More in the east and less in the west, more in the south and less in the north

Saving and protecting water resources PPT, part 2: rational allocation of water resources

In order to prevent and control drought and flood disasters and alleviate the contradiction between water supply and demand, our country has always attached great importance to the construction of water conservancy projects since the founding of New China. On the one hand, the problem of uneven temporal distribution of water resources is solved by building reservoirs and other water storage projects; on the other hand, the problem of uneven spatial distribution of water resources is solved by building cross-basin water diversion projects. Among them, the two most eye-catching projects are the Three Gorges Water Conservancy Project and the South-to-North Water Diversion Project.

Activity

Understand the necessity of the South-to-North Water Diversion Project

1. Find out the destinations of the east and middle lines of the South-to-North Water Diversion Project.

2. Based on the precipitation, population, cultivated land, etc. of the North China Plain, discuss the necessity of implementing the South-to-North Water Diversion Project.

Saving and protecting water resources PPT, Part 3: Actions to save and protect water resources

1. Regarding the hearing on adjusting water prices in a certain city, whose opinion do you agree with? Please explain why.

The price of industrial and commercial water should be significantly increased and the price of domestic water should be stabilized.

To reduce waste, water consumption should be priced in segments, and excess charges should be doubled.

Water needs to be processed before it can be used and is priced according to production costs. The cost of sewage treatment should also be included in the water price.

Water is indispensable in everyone's life, and it is necessary to ensure that it is supplied to residents at a low price, especially to families living in difficulty.

2. Slight changes in some habits in production and life will produce unexpected good results. Please pay attention to the relative heights of street pavement and green space in the three options in the picture below, and analyze which option is conducive to the utilization of water resources. Please tell me what other similar examples you have in your life.

Saving and protecting water resources PPT, Part 4: Summary of this lesson

The spatial and temporal distribution of water resources: Most rivers in my country have more water in summer and autumn and less in spring and winter; more in the east and less in the west; more in the south and less in the north.

Water resources are inseparable from people’s lives

Save water and protect water resources: Our country is rich in total water resources, but the per capita occupancy is small, unevenly distributed, serious pollution and waste, and the supply of water resources exceeds demand.

Household water conservation: use water for domestic purposes, use water for multiple purposes, promote water-saving appliances and use less detergents and cleaners

Keywords: Free download of Geography PPT courseware for the first volume of eighth grade version of Business Planet Edition, PPT download of saving and protecting water resources, .PPT format;

For more information about the "Saving and Protecting Water Resources" PPT courseware, please click the "Saving and Protecting Water Resources" ppt tab.

"Saving and Protecting Water Resources" PPT courseware:

"Saving and Protecting Water Resources" PPT Courseware Part One: Learning Objectives: (1) Knowledge Objectives: Know the spatiotemporal distribution patterns and causes of water resources. (Key points) (2) Capability objectives Use maps to analyze how to rationally allocate water resources in my country. (Difficulty) ..

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Update Time: 2024-09-09

This template belongs to Geography courseware Business Planet Edition Geography for Grade 8 Volume 1 industry PPT template

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