"Main Vegetation and Natural Environment" Vegetation and Soil on the Earth PPT

"Main Vegetation and Natural Environment" Vegetation and Soil on the Earth PPT

Part One: Strengthening the Implementation of Basic Knowledge

[Self-reading textbook·Fill in key points]

1. Main vegetation

1. vegetation

(1) Concept: a general term for various types of ____ covering an area.

(2) Classification: ____ vegetation and ____ vegetation.

(3) Please connect common vegetation types with their corresponding types.

[Special Reminder]

(1) In a certain area, all individuals of the same plant form a population; the collection of various plant populations living in a certain area at the same time constitutes a plant community.

(2) Places with superior environmental conditions have complex community structures and rich species of higher plants; places with harsh environmental conditions have simple community structures with only a few higher plants.

(3) Plant communities can change with changes in the environment.

2. forest

(1) Distribution: Generally distributed in ____ and ____ areas.

(2) Types: ____ rain forest, tropical monsoon forest, subtropical evergreen broad-leaved forest, subtropical evergreen sclerophyll forest, temperate deciduous broad-leaved forest, subarctic coniferous forest, etc.

3.Grassland

(1) Distribution: Generally distributed in ____ and ____ inland areas.

(2)Type:

①Tropical grassland:

a. Distribution area: Located in ____ areas with long dry seasons.

b. Vegetation characteristics: Mainly ____, with scattered xeric trees and shrubs; it has an extremely unique community appearance.

② Temperate grassland: perennial herbaceous plant community, usually dominated by ____, and plants generally have xerophytic structure, such as smaller leaf area, involute leaves, etc.

4.Desert

(1) Distribution: Generally distributed in ____ areas.

(2) Type: ____ with desert and ____ with desert.

(3) Characteristics: vegetation ____, large areas of exposed ground surface, plant species ____, community structure ____.

Main vegetation and natural environment PPT, part 2 content: Pay attention to problem-based teaching

Question 1: What are the types and characteristics of forestsBasic test points

[Thinking and exploring]

A forest is a plant community composed mainly of trees. There are various types of forests. A middle school geography field expedition team took two sets of photos, which are the overall views of different forests and photos of their leaves.

[Exploration 1] In what areas are the two types of forests in the picture mainly distributed?

Tip: Evergreen broad-leaved forests are mainly distributed in subtropical monsoon climate zones and subtropical humid climate zones; deciduous broad-leaf forests are mainly distributed in temperate monsoon climate zones and temperate maritime climate zones.

[Exploration 2] If you walk into a broad-leaved forest in summer, how to determine whether it is an evergreen broad-leaved forest or a deciduous broad-leaved forest?

Tip: It is mainly judged by the different characteristics of leaves. The leaves of evergreen broad-leaved forests are mostly leathery, shiny, hairless, and slightly hard. The leaves of deciduous broad-leaved forests are mostly papery, wide and thin.

[Training to pass the test]

1. Which of the following statements about forests is correct ()

A. Forests are mainly distributed in humid and semi-humid areas in the tropics and boreal zones

B． The main types of forests in the tropics are tropical rainforests

C. Temperate forest types are single

D. Coniferous forests are mainly found in boreal areas

2. The main influencing factors for the loss of mangroves on the west coast of the African continent near the Tropic of Capricorn are ()

A. Latitude positionB. illumination

C. How far away from the sea D. ocean current

3. Which of the following does not belong to the ecological benefits of mangroves ()

A. Fixed bank berm B. regulate floods

C. Windproof and wave-repellent D. Purify sea water

Question 2: What is the relationship between vegetation and the natural environment? Important and difficult test points

[Thinking and exploring]

After years of hard work, my country has initially built an ecological barrier across my country's "Three North" regions by implementing a series of ecological and environmental protection measures such as the construction of the "Three North" shelterbelts, natural forest protection, and grassland wetland restoration. Desertification of land has been effectively controlled, and the ecology of grasslands and forest networks has gradually improved.

[Problem Design]

1. Use "comprehensive thinking" to analyze what types of vegetation are present in graphic materials?

Tips: Natural vegetation such as natural forests, grasslands, and deserts; artificial vegetation such as shelterbelts.

2. Use "comprehensive thinking" to analyze the relationship between the illustrated vegetation and the environment?

Tip: The environment provides growth conditions for vegetation, and vegetation will also modify some of the environmental conditions for its growth.

3. From the perspective of "geographical practice", if you travel from the east to the west of the Inner Mongolia Plateau, how do you find the transition of vegetation? what is the reason?

Tip: From east to west: temperate grassland - temperate desert grassland - temperate desert. The reason is that moisture conditions are getting worse from east to west.

Main vegetation and natural environment PPT, the third part: carrying out structural evaluation of thinking

Structural evaluation of thinking - Succulent plants in Namaqualand, southern Africa

The Namaqualand Desert borders the Cape of Good Hope to the south and the Atlantic Ocean to the west. It is a desert that is long and narrow from north to south, desolate and arid, with diverse topography. It has a history of 50 million years. The average annual precipitation is about 150 mm, with some areas less than 50 mm. There are about 150 days of fog every year. The International Ecological Conservation Organization believes that the Namaqualand Desert is the only biodiverse arid zone on earth. There are more than 3,000 species of plants in the area, including more than 1,000 types of succulents, accounting for 10% of the world's succulent plant species. Succulent plants have small leaves and thick flesh. They usually live in places with high temperatures, low precipitation, and obvious alternation of dry and wet seasons. A small amount of fog and dew can meet their survival needs. In order to survive, most succulents in Namaqualand will choose to spend time "dormant" at certain times. Based on the materials, discuss what are the reasons for the large number of succulent plant species in the Namaqualand Desert?

Keywords: Hunan Education Edition high school geography compulsory course 1 PPT courseware free download, main vegetation and natural environment PPT download, vegetation and soil on the earth PPT download, .PPT format;

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"Main Vegetation and Natural Environment" Vegetation and Soil on Earth PPT Courseware:

"Main Vegetation and Natural Environment" Vegetation and Soil on the Earth PPT Courseware Part One: Goal Setting 1. Understand the meaning, main types and main characteristics of vegetation. 2. Understand the distribution characteristics of main vegetation. 3. Understand the distribution, morphology and geography of vegetation..