Local forest cover and afforestation in recent years 20

Jiuquan City has 120,000 acres of artificial afforestation, 100,000 acres of beach closure and afforestation, and 3.2 million trees planted on a voluntary basis.

The average forest cover in the world is 34 per cent in North America, about 30 per cent in South America and Europe, 15 per cent in Asia, 10 per cent in the Pacific and only 6 per cent in Africa.

The most forested continent is Latin America, which accounts for 24 per cent of the world's forest area and 44 per cent of the world's forest cover.

The country with the highest forest cover is Suriname in South America, reached.

The countries with the lowest forest cover are in the Middle East and North Africa, where only 1 in 100,000; The country with the fastest growth in forest cover is France.

China has a vast territory, few forest resources, and low forest coverage rate, with great regional differences.

Most of the country's forest resources are concentrated in the northeast, southwest and other remote mountainous areas and southeast hills, while the vast northwest region is poor in forest resources.

The national average forest coverage rate is the highest, with Jiangxi and Fujian provinces being the highest.

There are 16 provinces with a forest coverage rate of more than 30%, including Guangxi (61%), Heilongjiang, Hunan and Jilin, while Xinjiang and Qinghai have less than 6%.

Forest cover

Also known as forest cover rate, it refers to the percentage of forest area in the land area of a country or region, which is an indicator that reflects the forest area occupation or the richness of forest resources and the degree of greening in a country or region, and is one of the important bases for determining the utilization policy of the forest management and development of Can Lu Department.

Calculation method:

When calculating the forest coverage rate, the forest area includes the area of arbor forest land and bamboo forest land above canopy density, the area of shrub forest land specially stipulated by the state, the farmland forest network, and the area covered by the forest trees on the four sides (next to the village, next to the road, next to the water, and next to the house).

Forest coverage is an important indicator to reflect the abundance and ecological balance of forest resources.

The formula is calculated as: Forest Cover (%)Forest Area Total Land Area 100%.

Different countries take different approaches to the calculation of forest cover.

For example, China's forest coverage rate refers to the area of arbor forests, bamboo forests, shrub forests and economic forest land specially designated by the state, as well as the total coverage area of farmland forest network and forests next to villages, houses, watersides and roadsides to the percentage of land area.

Due to the constraints and influences of the geographical environment, the regional distribution of forests is very uneven.

Significance

With the rapid development of industrial and mining enterprises and the rapid increase of fossil fuels for human life, the polluted air is mixed with a certain amount of harmful gases, threatening human beings, among which sulfur dioxide is a widely distributed and harmful harmful gas.

All living things have the ability to absorb sulfur dioxide, but the rate and ability to absorb it are different.

Plants have a huge leaf area and absorb much more sulphur dioxide than other species.

It has been determined that forest air contains 15-50% less sulphur dioxide than open land.

In the summer of high temperature and humidity, with the vigorous physiological activity of the forest, the rate of sulfur dioxide absorption by the forest will be accelerated.

The relative humidity is above 85%, and the forest absorbs sulfur dioxide 5-10 times faster than the relative humidity of 15%.

In 2008 and 2009, the country completed afforestation of 10,000 hectares and 10,000 hectares, an increase of and over the previous year, respectively. According to statistics, from 1979 to 2009, 10,000 hectares of afforestation were completed in key forestry projects, including 10,000 hectares of the Three-North Shelterbelt Project, 10,000 hectares of Tianbao Project, 10,000 hectares of the project of returning farmland to forest, 10,000 hectares of the Beijing-Tianjin Sand Source Control Project, 10,000 hectares of the fast-growing and high-yield forest base project, 10,000 hectares of the Yangtze River Shelterbelt Project, 10,000 hectares of the Pearl River Shelterbelt Project, 10,000 hectares of the coastal shelterbelt project, 10,000 hectares of the Taihang Mountain Greening Project, and 10,000 hectares of the plain greening project. The area of planted forests in China has reached 62 million hectares, making it the country with the largest area of cultivated planted forests in the world.

By the end of 2009, a total of 100 million people had participated in voluntary tree planting, planting 100 million trees.

The green coverage area of urban built-up areas has reached 10,000 hectares, and the green coverage rate of built-up areas, green space rate, and urban per capita park green space area of square meters. Transportation, railway, and water conservancy systems actively promote the construction of channel greening, and the national highway greening mileage has reached 10,000 kilometers, accounting for the national highway greening mileage; The railway has been greened to reach kilometers, accounting for the Yilin railway; The water conservancy system has greened 10,000 kilometers along the river.

In 2010, China coordinated the promotion of voluntary tree planting, barren mountain afforestation, urban greening, departmental greening, and forest management, and actively implemented the "Forestry Action Plan for Climate Change", planning to complete afforestation (enclosure) of 5.92 million hectares, forest tending of 5.25 million hectares, voluntary tree planting of 100 million trees, and urban greening coverage rate of more than 40%.

Yes, if you need seedlings, please contact me, I have a large number of seedlings here.

According to preliminary statistics, by the end of February, the country has completed afforestation of more than 5.4 million mu, including 5.1 million mu of artificial afforestation, 310,000 mu of mountain closure and afforestation, 19.27 million mu of land preparation, and 1 billion seedlings, including 100 million field seedlings and 100 million container seedlings, the proportion of container seedlings is getting larger and larger, and more than 20 million trees are planted by the whole people. In the past 26 years, the number of people who have planted trees has been 100 million, planting 100 million trees, if we calculate according to the average number of trees per mu of 200 trees, it should be said that nearly 100 million mu, the cumulative voluntary tree planting base has 260,000, the area has reached 6 million hectares, that is, 90 million mu, 2007-03-11

There is only one difference, and that is the concept.

1. Forest coverage refers to the percentage of forest area and land area in administrative areas. Forest area, including the area of arbor woodland and bamboo forest land above canopy density, the area of shrub forest land specially stipulated by the state, the farmland forest network, and the coverage area of trees next to villages, roadsides, watersides, and houses.

2. Percentage of the forestry and grass coverage refers to the percentage of the total area of forest and grass vegetation such as arbor forests, shrubs and grasslands in the regional land area.