Adjust silvicultural Law "is the main management measures" adjusted cutting. "Wu, deputy director of Harbin Municipality may sense that the" adjustment cutting "and the original way of cutting the biggest difference is that the original way of cutting as the main purpose of the drawn, side focus on "cutting" and "adjustment cutting" as the main purpose of the afforestation, the focus is "stay." This does not exclude timber production management measures, the difference is that the original approach to the destruction of forest cutting the cost of access to timber , and "adjust cutting" is through the cultivation of forests for timber. This management practice more in line with "close to nature silviculture" theory requires, but also to achieve sustainable forest management. 

More than cutting down trees doorway 

Northeastern forests, Through the ages, the phenomenon of hacking, making a wealth of valuable tree species vanish, leaving only the teasel and shrubs. Rapid degradation of forest that disappeared. Cutting down trees is not just a hack, doorways and more particular about cutting down trees. Better for the growth of the forest, we need to be Wu Yi told us several logging methods to convey to outsiders do not say if things do add to the trouble. 

First, adjust the density logging. It is unreasonable for the forest stand age structure implementation. According to the different origin of the forest, different species, different age stages of the density with which the most suitable to determine the reserve density, by adjusting the density of forest harvesting. 

Second, adjust the cutting quality. Forest types and operating under the direction of quality indicators of forest management, forest resources through Fachu depreciation, foster value-added forest resources, forest areas and give full play performance, improve forest quality. 

Third, adjust the cutting trees. Unreasonable for some species, poor quality of some species, we need to adjust the cutting. This is mainly carried out in the natural mixed forest, by retaining high-quality, high-priced, rare species, Fachu those poor, low-cost, inefficient species, increased the proportion of high-quality trees to improve tree growth, improve forest productivity. But pay attention to forest ecological requirements of biological diversity, to retain a certain percentage of multi-species seed source trees. 

Replanting after cutting 

Chinese Academy of Forestry researcher Houyuan Zhao said that two types of forest, one is forest, one is forest. Different emphases. Quality indicators of forest management operations under the direction of forest species and, in the main ecological benefits of forests in order to take into account the economic, commercial forest-based economic benefits both to the principle of eco-efficiency determined. However, in dealing with ecological and economic functions, we always Comparative Study and Integration, can not be multi-functional forest management point of view, so both sides. Often the emphasis in terms of environmental protection ecological and economic functions from speaking, to emphasize the peasants forest, eucalyptus forest south of the economic benefits. Fall into the "single function" of the cycle. 

A variety of different growth cycle of trees, use not the same. Eucalyptus is a fast-growing species, usually as long as 6 years. Larch and birch, the earliest 40 years.Natural pine 120 years to become useful, the general will have 30 to 50 years. These goals should be treated differently under cultivation. 

Carry out multi-tree species 

BAK said the history of German foresters, in the 18th century, the Industrial Revolution to cut wood, use 99% of coniferous forests, the formation of low levels of forest vegetation.By the 20th century, 60 years, eco-efficiency is poor. Thus, the German bitter experience, began to study the plantation near the natural operation, and more tree species, re-transformation, the formation of multiple layers suitable for afforestation near natural state. He believes that China should take this path. 

We often wait until the destruction of forests, and then recovery, which even became a rule. 

For economic development, cut down trees to sell for money, reforestation, quality can not, then grasp quality. This should be a warning. 

Hou told a story. World War II, the French began to grasp forest restoration, until 50 years after the resumption of the last century, forest quality is not good, so I grab. To show their determination, the special appointment of a Minister of Forestry foresters arrested when forest quality. The minister will submit the proposal to the Prime Minister, forest management and tending the strategy from quantity to quality has been a fundamental change in the forest brought the rise in the quantity and quality. 

1 hectare of forest trees is only 85 cubic meters (only 50% good), while Germany has 370 cubic meters 1 hectare of forest trees. Germany 1 cubic meter of wood can be sold at 1,500 euros, to 48 cm diameter at breast height of trees. 1 cubic meter of wood in China is only worth 200 euros, only 14 cm diameter at breast height. There are several times more than the two relatively poor. This is the gap between us and Europe. 

Burning of forest to cut down forests 

Some local developers will be 5 acres, 10 acres into a piece of wood burned, and then planted. Some parts of the woods, cut down after the re-planting the whole plantation, which, Hou, the researchers said, in which the phenomenon can not make a fuss. The problem is not able to cut down or burned, and in the cut, never mind go after burning.And plant species can not think what's what, but with restrictions. Houyuan Zhao said that the woods not to move, would cause widespread death, pests also cause degradation of large areas of woods. "Not to cut right, cut is not all right. The practice of forest management in Europe and China do not like is that they do not cut, even tree stumps have reservations, it is considered from the biological diversity is to pass down the genes." 

Houyuan Zhao said, the correct way is to cut the tree Planting monthly, make up the need to nurture. "Some media are not familiar with the forest laws of nature, one can see cutting down trees or burning forests to blindly condemn, this is a disservice to public opinion." 

Wu can be defined that the scientific method is to cut down after the replanting of eco-based. What we lack, according to the laws of the natural extension to go for. For example, the original length of the coniferous forest tree species, as is necessary to AS Planting monthly on the tree. To replanting timber species is a good optimization.