How important is the forest to human health? China Green Times

Walking on the land of Sanxiang at the turn of spring and summer, the breeze blew, so relaxed and free. Walking on the lush boulevard, the fragrance wafts from all directions. Compared with the late spring in the north, Hunan always loses its color-mountains are beautiful, mountains are green and vibrant.

Hunan is a major forestry province, with forestland area of 65.438+93.7 million mu, forest coverage rate of 57.52% and standing stock of 445 million cubic meters. To outsiders, the "green family" in Hunan is stable, and the forest coverage rate far exceeds the national average.

However, people in Hunan are looking further and pursuing higher, and are making efforts to build a healthier and more beautiful forest.

Forest resources should be quantitative and qualitative.

In recent years, Hunan has promoted afforestation at an average annual rate of 6 million mu, especially since the Provincial Party Committee and the provincial government issued the Outline for the Construction of Green Hunan in 20 12, which has set off a huge afforestation upsurge from urban to rural areas, from mountainous areas to mountainous areas, and from highways to river banks throughout the country, and the green map of the whole province has been continuously expanded.

Deng Sanlong, director of Hunan Forestry Department, said: "Afforestation and greening is the premise of building a healthy forest, but the total amount is not enough, and it is necessary to achieve an all-round development of average quantity and quality."

The forest coverage rate in Hunan is nearly three times that of the national average, but the average volume per mu is only 3/5 of the national average. In a few areas, there are single afforestation species, many pure forests and few mixed forests; There are many common trees, but few precious trees.

Deng Sanlong said: "To change this situation, we must take measures to improve the quality of forest resources at the same time, and take improving quality as the core content of building a healthy forest."

In 2008, with a view to leaving a precious and rare vision of tree resources for future generations, Hunan began to implement the development strategy of replacing superior materials and developing superior materials without restriction. Through "taking state-owned forest farms as a breakthrough and relying on science and technology", Hunan has carried out afforestation and improvement of precious and excellent tree species in major ecological public welfare forest areas with convenient transportation and good site conditions.

Practice has proved that this measure is a strategic choice to improve forest quality and build a healthy forest, which is very forward-looking. In 20 12, the state forestry administration started the demonstration project of the construction of the national timber strategic reserve production base, which is a coincidence. By the end of 20 13, Hunan has actually completed 553,000 mu of excellent wood replacement afforestation, and plans to further promote the healthy development of excellent wood replacement at the rate of/kloc-0.0 million mu per year.

At present, Hunan's forest resources have entered a critical stage of transformation from quantity to quality. In order to improve the quality of forest resources, the whole process management of afforestation quality is carried out in all parts of Hunan, and the planning, seedling raising, land preparation, planting, acceptance and management are strictly controlled. Improve forest management level. In 20 13, the province completed 7.408 million mu of forest tending management, including 2.273 million mu of low-yield forest transformation and 0.025 million mu of excellent wood cultivation, which promoted the steady increase of forest volume per unit area.

Deng Sanlong said that there are more than 68 million mu of young and middle-aged forests in Hunan, and there is huge room for forest management and development.

It is worth mentioning that Hunan has launched a forest soil testing information system in the whole province, which has provided strong technical support for forest farmers' scientific afforestation and afforestation. Forest farmers can quickly find out the site conditions, the most suitable tree species, and related planting, management, fertilization and pest control technologies of their hilltop plots with a click of the mouse on the Internet.

In 20 13 years, the afforestation utilization rate of Hunan forest soil testing information system exceeded 70%, and the utilization rate of improved varieties of main afforestation trees reached 85%. Hunan Province completed the afforestation task 1347. 1000 mu, exceeding the plan by 3.6 percentage points, and the afforestation quality ranked first in the country for five consecutive years.

Increase the mixed proportion of afforestation in key projects

On April 18, China Green Times reporter drove to Tongdao Dong Autonomous County in southwest Hunan Province. Along the way, the rolling mountains are covered with green.

The forest coverage rate in Tongdao County is as high as 74.56%, which is an enviable figure in the eyes of peers.

However, Lu, director of the Forestry Bureau of Tongdao County, poured a bitter water on the reporter: Since the 1970s, Tongdao County has made great efforts to build an artificial forest dominated by Chinese fir. At present, there are nearly 500,000 mu of artificial forests in the county, most of which are Pinus massoniana and Chinese fir. Due to the large-scale construction of artificial pure forest, the stability of forest ecosystem in Tongdao County is poor. Once forest diseases and insect pests occur, it is easy to break out and it is difficult to resist the attack of snow and ice.

"This morning, I also reported the progress of pure forest transformation to the deputy magistrate in charge of forestry work in the county." Lu said to him:

In order to change the problem of excessive pure forests, Tongdao County has made many attempts to encourage forest farmers to build mixed forests in masson pine industrial raw material forests through policy guidance. The forestry department distributed seedlings such as Schima superba and Liquidambar formosana to the people, but the people didn't accept them, and some picked them and threw them in the mountains.

In view of this situation, forestry technicians have conducted in-depth research and come to the conclusion that ordinary people like to plant precious tree species. Therefore, since the beginning of this year, the forestry department has repeatedly reported to the county for instructions. Finally, through the county executive meeting, it was determined that precious tree species such as Phoebe bournei and Taxus were distributed to the masses by the county finance. Up to now, Tongdao County has distributed 200,000 seedlings of Phoebe bournei to the masses, and 58,000 mu of new afforestation land has been added to realize the mixing of Phoebe bournei or precious tree species.

Tongdao County also proposed that starting from this year, the afforestation subcompartments included in the national key construction projects such as the Pearl River Shelterbelt Project and the Project of Returning Farmland to Forests must be pure precious tree species, pure Phyllostachys pubescens, or mixed with precious tree species and Phyllostachys pubescens, highlighting the proportion of precious tree species.

In order to change the present situation of single afforestation tree species, Hunan Province has implemented thousands of rare tree species into farm projects since 20 12, and put forward the rigid stipulation that the mixed proportion of afforestation in key projects must reach more than 30%, and the mixed proportion is regarded as an important content of provincial afforestation acceptance.

Ecological protection is always the first.

During the Spring Festival this year, there was a rare continuous high temperature and little rain in most parts of Hunan Province. After the warm winter, the whole province ushered in low temperature and freezing weather, and the lodging and combustible materials in the forest increased sharply. The complex situation of forestry drought, fire and insect disasters has posed severe challenges to forestry departments at all levels in Hunan.

Xiangxi Tujia and Miao Autonomous Prefecture is an important green barrier in Hunan Province, just like a piece of green.