Question 2: What kind of trees have the most economic value? Of course, it is rare at present, and its growth cycle is slow. For example: sandalwood, Huang Huali, mahogany,,, It depends on the local climate. Then there are fruit trees with high economic value. Mulberry, cherry,,,. You can also consider rare tree species for greening, such as ginkgo, phoenix tree, willow and so on. . .
Question 3: What greening tree species are planted at present, which will have higher economic value in the future? According to the part of forest utilization, 40 points:
1. Woody grain forest (such as chestnut, jujube and persimmon), woody oil forest (such as camellia oleifera, walnut, tung tree, olive and butter) and fruit tree forest (such as apple, pear, orange and litchi) for the purpose of utilizing the fruits or seeds of trees;
2. Rubber forest, lacquer forest, etc. Using tree pulp as industrial raw material;
3, for the purpose of using bark cork forest (such as Quercus variabilis, yellow tiller, etc.). ), fiber forest (such as Broussonetia papyrifera, Fraxinus mandshurica, etc. ) and medicinal forests (such as Magnolia Officinalis and Eucommia ulmoides Oliv. Cinchona cream, etc. );
4. Mulberry forest, oak forest and tea forest for the purpose of using leaves;
5. Cutting trees (such as Vitex negundo, Mulberry and Salix psammophila). ) for the purpose of using branches.
According to the main purpose:
Economic forest mainly producing fruits
Mainly produces dried fruits or wood and fruits. Common types are:
(1) Ginkgo forest. Both materials and fruits are used, mainly fruits. If the fruit is edible, the leaves can be used to extract Guanxinone, a medicine for treating cardiovascular diseases.
(2) Torreya grandis forest. Both materials and fruits are used, mainly fruits. Fruit can be eaten, and edible oil can also be extracted.
⑶ Chestnut forest. Both materials and fruits are used, mainly fruits. Fruit is edible.
(4) jujube forest. There are red dates, black dates and so on.
5] persimmon forest. The fruit is eaten or processed into persimmon.
[6] Walnut forest. Both materials and fruits are used, mainly fruits. Fruit has high nutritional value and is used in food and medicine. The oil content of nucleolus is as high as 80%, and the oil is used in food and industry.
(7) hickory forest and hickory forest. Both wood and fruit are used. Nuts are edible and can be used to extract oil.
Economic forest mainly producing edible oil.
Common types are:
(1) Camellia oleifera forest. The oil content of seed kernel can reach 52%, which is high-grade edible oil and can be used in industry.
⑵ Olive grove. Fruit and oil are extracted for food and industry.
(3) Xanthoceras sorbifolia forest. The oil content of seed kernel is as high as 66%. Oil is used in food and industry, and it is an important oil in northern China.
(4) Xinglin. The oil content of nucleoli can reach 665438 0%. Oil is used in food and medicine, and also as industrial raw materials. It is a woody oil plant in the arid area of western China.
5] Black olive grove. Fruit is processed and eaten. Olive meat and olive core can also be pressed into food or industrial use.
[6] Oil palm forest. Oil is extracted from seeds, and the products include palm oil and palm kernel oil, both of which are edible.
(7) coconut grove. The main product is coconut oil, which is used as raw material for food and soap industry.
[8] Jatropha forest. The main product is tung oil, with an oil content of 36.3% and linoleic acid content of 66%-8 1%. Can be used in food, health care medicine and industry.
Economic forest mainly producing industrial raw materials
Common types are:
(1) pine forest. Some are mainly used for cutting turpentine, and some are originally natural forests or artificial timber forests. Before logging, one or more resin extractions are carried out to produce industrial rosin and turpentine in various ways.
(2) Tung oil forest. The oil extracted from seeds is called tung oil, which is the best drying oil in the paint industry.
(3) Sapium sebiferum forest. Important woody oil forests in China. The seeds are covered with wax. Processing Chinese tallow (skin oil), seed kernel processing for green oil. The oil yield of seeds can reach 4 1%. Used in soap making and paint industry and other purposes.
(4) Fraxinus mandshurica forest. Mainly stocking white wax insects, producing white wax insects for moistureproof, lubrication, lighting and so on. Used for various industrial and medical purposes. Fraxinus mandshurica is planted into dwarf forest by bud grafting regeneration method, which can produce Fraxinus mandshurica strips for making farm tools and furniture.
5] Dalbergia odorifera forest. Dalbergia species can breed lac insects and produce lac. Among Dalbergia species in China, Dalbergia obtusifolia, Dalbergia Simao and Dalbergia Nanling can be used to build economic forests and raise lac insects.
[6] Black wattle forest. Fast-growing, high-yield, can provide high-quality tannin extract raw materials. Bark contains condensed tannin as high as 50%, which is used for tanning industry or processing tannin phenolic glue, and for gluing wood.
(7) Rubber tree. It is a rubber forest with high yield, easy cutting and the widest cultivation area among rubber-producing plants. The rubber produced is an indispensable material for the national economy.
Painted as a forest. The main product paint liquid (original paint) is a kind of high-quality paint. Lacquer wax can be extracted from fruits and lacquer kernel oil can be extracted from nuts, both of which are used as industrial raw materials.
Levies Quercus variabilis forest. Generally, natural forests are artificially cultivated for peeling and processing cork. It has many industrial uses. Quercus variabilis is also a timber tree. Its wood is hard, the fruit can be used as starch, and the shell bucket can be used for shipping, which has many economic values.
⑽ Dalbergia and Broussonetia papyrifera. The bast fiber of Pteroceltis tatarinowii branches is a special raw material for making rice paper. The papermaking (rice paper) industry in Jingxian County, Anhui Province is dominated by Qingtanlin. Broussonetia papyrifera is mostly wild. After artificial preservation, it can be peeled and processed into high-quality fibers, which can be used to make carbon paper, wax paper, insulating paper, cotton paper and so on. It can be blended with cotton yarn to make artificial cotton.
⑾ Palm grove. The main product brown leather and its processed products are widely used in industrial and agricultural production, transportation and daily life.
⑿ PuKuiLin. Mainly produces sunflower leaves, which are used to make round fans and woven fans. & gt
Question 4: Which tree species with high economic value are easy to cultivate? The choice of economic forest tree species depends on the natural and socio-economic conditions in different regions. Mainly apples, pears, walnuts, oranges, pomegranates, cherries, grapes, persimmons, peaches, plums, apricots, sliced eggs, mulberries, ginkgo, roses, peppers and so on. (Attachment: Shelterbelt: The choice of shelterbelt tree species depends on the purpose. Water conservation and soil and water conservation mainly include pine, spruce, fir, hemlock, redwood, birch, maple, alder, deciduous oak and alpine oak. Poplar, seabuckthorn, willow, etc. Mainly used for windbreak and sand fixation forests; The road protection and slope protection mainly choose Gouzimu, Ephedra, Seabuckthorn, Willow, Magnolia, Amorpha fruticosa, Sorbus pohuashanensis, Rose, Sanzhen and Spring Plum. ? -Timber forest: the selection of tree species in timber forest is mainly fast-growing and high-quality. There are all kinds of fir, spruce, hemlock, redwood, birch and alder. ? -special forests: special forests are mainly used to protect germplasm resources. In addition to fir, spruce, hemlock, pine, birch and other excellent fast-growing tree species, Phoebe bournei, Cinnamomum camphora, Phoebe bournei, Magnolia officinalis Kangding, Magnolia officinalis Xikang, Acer mono, Taxus chinensis and so on are also excellent tree species. -Fuelwood forest: there are two main types of trees in fuelwood forest: one is fast-growing trees, such as birch, alder and spruce; The other is hard miscellaneous wood such as deciduous oak and alpine oak. )
Question 5: The economic value and market benefit of planting eucalyptus are affected by many factors, but overall, the economic benefit of eucalyptus is still considerable. Because the capital turnover is fast, it can generally be returned in 3-4 years, and the annual investment profit rate is higher than 20%. As a medium and large diameter timber, it has high value. If you need to know the specific influencing factors, please refer to the relevant information.
3,000 mu of land, with a capital of 6,543.8+0.5 million, can barely make comprehensive investment, but there may be a capital gap of 6,543.8+0-6,543.8+0.5 million in 2-3 years, and funds can be raised or obtained by transferring, mortgaging a small part of forest land and lending. The funds are mainly used for afforestation expenses (including fertilizer and seedling expenses), followed by tending and regeneration expenses of budding forests in the current year and the second year. A generation spends 300 yuan per mu-350 yuan, and a generation spends about 300 yuan in 300 yuan. As for logging and other expenses, because the timber fee can be paid immediately, it doesn't need a lot of money, and a part of the risk fund is left for the exam.
Question 6: What functional trees such as sandalwood and agarwood are planted today with the most economic value?
Question 7: Talk about the economic value of several fruit trees. Walnut, chestnut, persimmon, jujube and other fruit trees have strong adaptability. Except for some low-lying mountainous areas with poor drainage or the temperature as low as MINUS 20 degrees, they can be planted in Beijing. These fruit trees have high economic value and wide uses. Walnut: Peach kernel contains 17% to 27% protein, 67% to 70% fat, calcium, phosphorus, vitamin A, vitamin B and vitamin C, etc. Walnut with shell can produce 20-30 kilograms of oil per 100 kilograms, which is rich in nutrition and has the effects of invigorating qi and nourishing blood, moistening intestines, relieving asthma and resolving phlegm in medicine. Industry can make soap, candles, paints and anti-ship agents; Walnut shells can be made into high-quality activated carbon. Chestnut: contains more starch than rice and wheat, reaching more than 80%, so it is called "woody grain". The bark, leaves, peel and chestnut bark of walnut contain a lot of "tannins", which can be used as black dyes and leather sewing, and also as raw materials for baking glue. Walnut and chestnut are hard, upright, water-resistant and blessing-resistant, and are good materials for ships, sleepers, railways, gun butts and floors. Chestnut appears black flowers after soaking in water, which is a good craft wood. Persimmon and jujube are also nutritious fruits, which can replace food. Persimmon paint can also be used to dye burnt nets and draw umbrellas. Persimmon trees are good materials for making wooden boats.
Question 8: The rarest and most valuable wood in Northeast China is 1. Juglans mandshurica is a deciduous tree of Juglans. Also known as Juglans mandshurica, Juglans mandshurica or Pecan. There are about 20 species of walnuts distributed in the north temperate zone, and there are 5 species 1 variety in China. The excellent wood of Juglans mandshurica is known as one of the three most valuable wood in Northeast China (Fraxinus mandshurica, Juglans mandshurica and Phellodendron amurense). This kind of wood has the advantages of luster, smooth plane, beautiful texture, toughness and corrosion resistance, and is widely used in military industry, architecture, furniture, vehicles, ships, musical instruments and so on. Juglans mandshurica wood resources have been cut down in large quantities. This situation forces us to designate this tree species as a national third-class protected plant. ? 2.？ Pineapple, also known as Phellodendron amurense, is one of the three precious broad-leaved tree species in China, mainly living in mountainous areas. Its bark can be used as medicine, which has the effects of clearing away heat and toxic materials, promoting gallbladder function and eliminating dampness, and has high economic value. Boxwood has luster, obviously uniform annual rings, soft material, easy drying and processing, beautiful color and pattern, good painting and gluing performance, difficult cracking and good corrosion resistance, and is a material for making high-grade furniture. After liberation, China banned the cutting of pineapple, which was mainly used for military manufacturing of gun butts. ? 3. Fraxinus mandshurica is an endangered species. Fraxinus mandshurica is an ancient relict plant. Although widely distributed, most of them are scattered plants, which are national second-class protected wild plants (approved by the State Council on August 4th, 1999). Due to excessive logging, the number is decreasing day by day, and there are few big trees at present. Fraxinus mandshurica is a deciduous tree with tough material and beautiful texture, which can be as high as 30 meters. It is a precious timber tree species in Northeast China and North China, and can be used to make all kinds of furniture, musical instruments, sports equipment, vehicles and boats, machinery and special building materials. At the same time, it has scientific significance for studying tertiary flora and quaternary glacial climate. I hope my answer is helpful to you.