40 results about "Metasequoia" patented technology

The invention discloses an ecological restoration method for a lakeside wetland. In the method, hygrophilous woody plants are planted in a lakeside zone to construct wetland plant communities. The hygrophilous woody plants comprise hygrophilous arbor and hygrophilous shrub, wherein the hygrophilous arbor comprises willows, metasequoia, ascendens mucronatum, taxodium ascendens brongn and bamboo; the hygrophilous shrub comprises iteaceae and S.integra thrnb; and the plants are planted in the way of shoot cottage or soil ball transplant. The hygrophilous woody plants are perennial plants, have a low growth rate, low biomass, low growth amount and low plant disposal pressure and do not need felling and refloating every year, so that the defects of frequently harvesting and refloating herbal emergent aquatic plant communities every year are overcome, the maintenance and management cost of lake wetland plant communities are reduced, the lakeside depositing rate is lowered, and the secondary pollution hidden danger to lake water bodies is relieved. Compared with the prior art, the method has the characteristics of convenient operation, maintenance and management, low maintenance cost, high ecological benefit, easy popularization and application and the like and can be used for ecological restoration engineering of lake and lakeside bottomlands, swamp marshes and shallow water zones.

The invention relates to a method for river course slope protection by using composite stream constructed wetlands, comprising the following steps that: (a) grass planting ditches with V-shaped cross section are dug on a slope surface, and plants are planted in the grass planting ditches; (b) a composite stream constructed wetland in which fillers are provided is set at the water outlet of the grass planting ditch, and one or more plants selected from reeds, cattail, sedge, Sparganium, Juncus, canna, metasequoia, calamus, Scirpus tabernaemontani, arrowheads, Aponogetonaceae grass, Alternanthera sessilis, cress or sedge are planted on the fillers; (c) a water outlet pipe is arranged at one side of the composite stream constructed wetland adjacent to the river course so that water flowing from the composite stream constructed wetland is drained into the water course. The method for river course slope protection by using composite stream constructed wetlands has the advantages of good stability of slope protection to water courses, little damage to ecological environment keeping at both sides of rivers, capability of beautifying riparian landscape and adding biological diversity, low cost and favorable pollution interception and purification effects.

The invention discloses a method for automatically extracting the tree height of a standing forest having high canopy density based on TLS and UAV. By utilization of UAV photographic measurement pointcloud data and ground precise point cloud data, the highest point and the lowest point of an individual tree are extracted; according to an individual tree positioning coordinate and automatic identification highest point information, the judged highest point and a positioning point are projected in a xoy plane; the identification accuracy is judged; and thus, a tree height value is rapidly extracted. The cost is reduced; the efficiency is increased; furthermore, on the premise that the tree height extraction precision is increased, partial manual survey is replaced; a lot of manpower and material resource consumption can be reduced; a test result shows that: the tree height extraction method provided by the invention has relatively high precision for tree height estimation of an artificial metasequoia forest; the tree height extraction value whole is closer to the actual measured value; and furthermore, the method in the invention also makes effective recommendations for forest resource assessment and business planning of small and medium-sized farms.

The invention relates to a feeding method for live pigs, and particularly relates to a method for sectionally feeding live pigs by an organically-fermented ecological feed. The organically-fermented ecological feed is prepared by using biological feeds fermented by a synthetic fermenting agent taking many tree seeds as factors, carrying out biological fermentation treatment on some pine needles, cypress seeds, rubber seeds, metasequoia seeds, pine tree seeds, tea tree seeds and the like, and adding certain energy feed and protein feeds. The organically-fermented ecological feed is used for feeding the live pigs, good in palatability, capable of enabling the live pigs to have a strong appetite, and capable of enhancing the body disease resistance of the live pigs, increasing the feed conversion rate and reducing the feeding cost, as well as is an important component in the organic husbandry, and worthy of popularization and application.

The invention discloses a sowing propagation method for dawn redwoods. The method comprises following steps: (1) seed collecting; (2) soil preparation; (3) seed processing; (4) sowing; and (5) seedling management. In the step (1), cones of dawn redwood mother trees are collected in the year before sowing. In the step (2), sowing is performed in February in the sowing year; acidic sandy loam with pH being 4-6 is employed as the breeding field; and beds are made after the breeding field is ploughed and raked. In the step (3), seeds are soaked in 0.1% potassium permanganate solution or in the water at 28-32 DEG C before sowing. In the step (4), ditches are made in the beds and then drill sowing is performed. In the step (5), shade houses are erected on the beds after the seeds sprout. By employing the method, the propagation quantity and survival rate of dawn redwoods can be effectively increased and improved, dawn redwood seedlings can be outplanted and transplanted in a short period, and the transplanted seedlings grow well.

The invention discloses an ecological restoration method of a wet land. A wetland plant community is built by planting hygrophilous wood plants in a lakeside zone, the hygrophilous wood plants comprise hygrophilous trees and hygrophilous shrubs, wherein the hygrophilous trees comprise willow, metasequoia, ascendens mucronatum, taxodium ascendens and bamboo; the hygrophilous shrubs comprise itea yunnanensis and salix integra thunb; and cutting with cutting seedlings or transplantation with soil ball seedlings is adopted for planting. Because the hygrophilous wood plants are perennial plants, the growth rate is low, the biomass and growth are small, cutting and fishing are not needed every year, and the pressure in disposing plants is small, so the defects that the herbaceous emerging plant community is reaped and fished every year is overcome, the maintenance management cost of a lake wet land plant community is lowered, the sediment accumulation rate of the lakeside zone is slowed and the potential problem of secondary pollution of the lake water is alleviated. Compared with the prior art, the invention has the characteristics of convenient operational maintenance and management, low maintenance cost, good ecological benefits, easy popularization and application and the like, and can be applied to ecological restoration works of lakeside shoal lands, swamps and shoal water zones.

The invention discloses a rapid propagation method of gold leaf metasequoia tissue culture. In order to solve the problems that gold leaf metasequoia grafting propagation coefficient is low, cuttage and layering propagation nursery stock is prone to aging, and an existing tissue culture method is high in pollution rate, low in propagation coefficient, unstable and the like, the rapid propagation method of gold leaf metasequoia tissue culture comprises the following steps of explant disinfection, primary culture, secondary culture, rooting and hardening-off culture, acclimatization and transplanting, different culture compositions are used at different culture stages, reasonable acclimatization measures are adopted, and therefore a rapid propagation technical system of gold leaf metasequoia tissue culture is built. A regeneration plant obtained through the method is stable in botanical character and good in repeatability, the growth coefficient reaches 4-6, the rooting percentage reaches 72%, the survival rate of transplanting reaches 96%, and large-scale commercialization seedling production can be carried out.

The invention relates to the technical field of timber processing equipment, in particular to a bark removing mechanism for metasequoia processing. The bark removing mechanism for metasequoia processing solves the technical problem that an existing timber bark removing mechanism is hard to remove barks of metasequoia of different thicknesses and is halfway to remove the barks. In order to solve the technical problem, the invention provides the bark removing mechanism for metasequoia processing. The bark removing mechanism for metasequoia processing comprises a case. A discharge opening is formed in the bottom of the case, an operating port is formed in the front face of the case, pile locking mechanisms are arranged on two sides of the inner wall of the case, a movable bark scraping mechanism is arranged in a chute formed in the top of the case, and a scratching depth adjusting mechanism is fixedly connected to the top of the bark scraping mechanism when the movable bark scraping mechanism moves. The height of a doctor blade can be adjusted, so that the depth of the doctor blade stretching into the barks can be changed, and the bark removing mechanism can be conveniently used for metasequoia of different thicknesses. When a first disc and a second disc rotate, the barks of metasequoia can be scratched on the doctor blade, and the doctor blade moving left and right can scratch the barks thoroughly.

The invention provides a metasequoia seed cultivation method capable of improving the survival rate of metasequoia. The metasequoia seed cultivation method includes the following steps: putting metasequoia seeds in a container, adding suitable ionized water to the container, transferring the container to a place at the temperature of 35-40 DEG C, and adding a nutriment solution into the container;placing the processed metasequoia seeds in a cultivation container of the metasequoia seeds again, adding biogas slurry and warm water into the cultivation container, transferring the processed metasequoia seeds to a vessel with a rooting solution, and acquiring the rooted and germinated metasequoia seeds; transferring the metasequoia seeds to a constant-temperature greenhouse, planting the metasequoia seeds in soil, and placing a microbial fertilizer around the metasequoia seeds. The metasequoia seed cultivation method can perform multi-processing on the metasequoia seeds, can effectively increase the nutriments of the metasequoia seeds, can prevent later pests and diseases, can effectively shorten the seedling cultivation period, can ensure the quality of the metasequoia, and can effectively improve the survival rate of the metasequoia in later planting.

The invention discloses a cultivation method for improving the whole canopy transplanting survival rate of a metasequoia big tree. The cultivation method comprises the following steps: (1) marking the south and north directions of a tree body in a native area; (2) enabling the diameter of a soil ball to be 10-12 times of the breast diameter of a transplanted tree; (3) removing 1 / 3 of branches except top branches from the bottom up; (4) putting a micro-spray head on the top of the tree for crown moisturizing, laying an annular pipe moisturizing device on a trunk; (5) laying nylon net ventilation belts in a crossed manner at the bottom of a planting hole; (6) positioning and planting according to the south and north directions of the tree body in the native area, and filling the periphery of the planting hole with a water-retention and root-increase substrate; (7) planting leaflet ivy to climb and protect the trunk around the root of the trunk; (8) adopting scaffold steel pipes to connect the trunk in a network manner so as to guarantee stable safety of the tree body; and (9) performing regular tending management. The cultivation method disclosed by the invention is simple and practicable, and is particularly suitable for urgent big tree migration transplanting engineering with insufficient broken root maintenance, so that poor transplanting conditions for quickening plant moisture evaporation under a high-temperature environment in the growing season are effectively improved, and the spring whole canopy transplanting survival rate of 40-year-old metasequoia big trees can be improved to be more than 90%.

The invention provides a hard branch cutting seedling culture method for metasequoia. The method comprises the steps of (1) selecting annual peripheral side branches of metasequoia with a tree age of two years as cutting slips in the middle ten-day period of December every year, wherein the length of the cutting slips is 7-9cm; (2) binding 100 cutting slips into a bale, placing the bale into a room, performing wet sand storage and spraying a storage solution on wet sand every 7 days; (3) in the middle ten-day period of February of the second year, taking out the stored cutting slips, unbinding the cutting slips and spraying a nutrient solution on the cutting slips uniformly; (4) placing the cutting slips with sprayed nutrient solution in a room with a concentration of carbon dioxide of 2000ppm, illuminating the cutting slips with purple light for 20-30min and taking the cutting slips out for cuttage. The hard branch cutting seedling culture method for metasequoia can greatly increase the survival rate of metasequoia cutting slips, increase the rooting speed of metasequoia, and shorten a seedling culture cycle.

The present invention discloses a metasequoia cultivation method, which relates to the field of economy trees cultivation. The technical scheme of the present invention includes the following steps: (1) transplanting the metasequoia seedlings into water area; (2) performing the treatment of top pruning to the metasequoia seedlings which grow to a certain height. The technical scheme has the advantages of low cost, high growth rate of metasequoia and good economic benefit, which is also in favor of soil and water conservation and ecologic environment.

The invention belongs to the technical field of plant cultivation, and relates to an industrialized water culture method for metasequoia cuttings. The method comprises the steps of 1, selection and treatment of the cuttings; 2, preparation of a nutrient solution; 3, construction of an industrialized plant water culture system; 4, seedling management. Specifically, the method comprises the steps that the cuttings each of which is about 10 cm long and contains 2-3 buds are cut from metasequoia seed trees which grow well for 2-10 years; one-third parts of the cuttings are soaked in a 10 g / L rooting powder solution for 24 h and then placed in clear water for soaking for two weeks, and the cuttings root under dark conditions; two weeks later, the cuttings are fixed by planting cotton and planting baskets and placed on a perforated foam plate, the foam plate is placed on a water culture box with the nutrient solution, it is ensured that the one-third parts of the cuttings are fully soaked in the nutrient solution, appropriate illumination is supplied, and the growth temperature of metasequoia and the oxygen supplying time of the water culture are controlled; the nutrient solution is changed every week, and the growth condition of the cuttings is monitored in real time; after two months, the survival rate and rooting quantity of metasequoia are measured. It is discovered from results that metasequoia after the water culture by means of the method grows well, the survival rate and the rooting rate are both relatively high, the survival rate after the metasequoia cuttings are transplanted is high, and the trees are beautiful in shape.

A preparation method of a metasequoia seed volatile oil microcapsule water dispersible particle bactericide comprises the following steps: adding water with the volume 5 times the mass of metasequoia seeds to the metasequoia seeds, and extracting volatile oil through a water steam distillation method; taking beta-cyclodextrin 8-10(g / ml) times the volatile oil, adding purified water 2-3 times the volatile oil, stirring to form a paste, adding the volatile oil, carrying out constant temperature stirring at 45-50DEG C for 2-3h, carrying out vacuum drying on the obtained paste for 3-4h, crushing, and sieving by using a 200 mesh sieve to prepare a microcapsule clathrate; adding 60wt% of the microcapsule clathrate, 3wt% of nekal, 5wt% of NNO, 4wt% of ammonium sulfate and 25wt% of white carbon black, and uniformly mixing the above added materials in a multidimensional motion mixer; using 3% of dry starch to prepare a 10-15% starch slurry; and putting the above obtained material in a boiling granulator, spraying the starch slurry, bonding, granulating, and drying to prepare water dispersible particles. A result of quality evaluation of relevant standards (GB) made in China shows that the particles are qualified.

The present invention provides a method for afforesting original soil on mildly saline-alkali land with a water-retaining agent containing cellulose-degrading bacteria. The water-retaining agent includes leaf powder, white decay bacteria, cellulose-degrading bacteria, buckwheat straw powder, rice husk powder, Enteromorpha powder, japonica powder; the preparation method includes the processing of leaf powder, and the processing of the leaf powder includes the step of preparing a leaf powder product; the present invention also provides the application of the above-mentioned water-retaining agent in the planting of metasequoia in saline-alkali land. Beneficial effects of the present invention: the water retaining agent prepared by the present invention has strong water absorption capacity in distilled water, rain water, and 0.6% NaCl solution, the water absorption capacity in distilled water can reach 940-1250 times of its own weight, and the water absorption capacity in rain water can reach its own weight 700-910 times of its own weight, and its water absorption capacity in 0.6% NaCl solution can reach 390-540 times of its own weight.

The invention relates to the technical field of preparation and processing of feed leavening agents, and in particular relates to an ecologic fed leavening agent synthesized by using tree seeds. The ecologic feed leavening agent is prepared from the following components in percentage by mass: 20% of rubber seeds, 18% of pine seeds, 6% of moringa oleifera seeds, 0.3% of strain, 6% of yeast powder, 2% of brown sugar, 17.7% of acer truncatum seeds, 10% of cypress seeds, 10% of metasequoia seeds, 3% of ancient tea tree seeds and 7% of rice. According to the ecologic feed leavening agent, the special nutritional components in the leavening agent factor ensure high nutrition and high effect of the organic biological feed prepared from the leavening agent, and the antibody of a pig eating the feed is greatly generated; the ecologic fed yeast is rich in a plurality of trace element and contains a plurality of amino acids and vitamins, and is full of strong life factors; therefore, the quality of non-pollution organic meat can be ensured.

The invention discloses a technology for efficiently planting bletilla striata (Thunb.) Rchb. F. under a metasequoia forest. The technology comprises the following steps of selection of seedlings, selection of the metasequoia forest, forest trimming, forest fertilization, under-forest planting, forest management, overwintering of bletilla striata (Thunb.) Rchb. F. and the like. The technology is suitable for domesticated seedlings and tissue culture protocorms, and a special fertilization scheme for topdressing of special foliage fertilizer is put forward for the protocorms. The method is adopted for seed selection of the protocorms, the survival rate can reach 90-95% or above, the seedling growing period is shorter than that of tissue culture domesticated seedlings and direct-sowing domesticated seedlings, and the growth period is shortened. Through seed selection of the tissue culture domesticated seedlings and direct-sowing domesticated seedlings, the survival rate can reach 96-100%, the bletilla striata (Thunb.) Rchb. F. grows vigorously and is high in yield, and the conventional management cost is significantly reduced relative to that of greenhouse planting and field planting. Besides, the promotion effect of the growth habit of metasequoia on the growth of the bletilla striata (Thunb.) Rchb. F. is proved by means of the technology. The technology is simple and feasible,and the resource utilization rate and the forest output rate can be increased.

The invention provides an injection prepared from the volatile oil of the Firaceae plant and its application. The injection is composed of the volatile oil of the Firaceae plant, a solubilizer, a cosolvent, a stabilizer and water for injection; each component of the injection is by weight In terms of percentage, it is as follows: 2-8% of the volatile oil of the firaceae plant, 6-10% of the solubilizer, 3-20% of the co-solvent, 0.1-6% of the stabilizer, and 100% of the water for injection; The plant volatile oil is the volatile oil extracted from the cones of Pondaceae, Taxus or Metasequoia; the present invention extracts the volatile oil from the cones of Firaceae plants, which can better inhibit the proliferation of human liver cancer cells, is safe and non-toxic, and the preparation method The method is simple and suitable for industrial production; the injection prepared from the volatile oil of the firaceae plant can be used to prepare anti-tumor injections, is highly effective and non-toxic, and can be used clinically.

The invention provides an injection prepared from taxodiaceae plant volatile oil and application thereof. The injection is prepared from, in percentage by weight, 2-8% of taxodiaceae plant volatile oil, 6-10% of a solubilizer, 3-20% of a cosolvent, 0.1-6% of a stabilizer and water for injection which is supplied to be 100%, wherein taxodiaceae plant volatile oil is volatile oil extracted from cones of pond cypress, swamp cypress or metasequoia. According to the injection prepared from taxodiaceae plant volatile oil provided by the invention, volatile oil is extracted from cones of taxodiaceaeplants, so that the activity of proliferation of human hepatocarcinoma cells can be better inhibited; the injection is safe and innoxious, and the preparation method is simple and suitable for industrial production. The injection prepared from taxodiaceae plant volatile oil can be used for preparing anti-tumor injections, is high-efficient and innoxious, and can be available for clinical use.

The invention provides a method for purifying a water body by utilizing wetland woody plants. The woody plants utilized by the method is one or several of bischofia javanica, callistemon viminalis, cephalanthus occidentalis, elaeocarpus hainanensis, barringtonia racemosa, elaeocarpus apiculatus, ilex rotunda, cleistocalyx operculatus, melaleuca bracteata, sapium sebiferum and metasequoia. By meansof the method disclosed by the invention, a function of purifying the water body through the woody plants is achieved, an obvious purifying effect on TN, TP, COD, NH4<+>-N, chroma and the like is achieved, a blank of aquatic woody plants in the field of water body purification is made up, and furthermore, the problems of water body purification and landscapes in winter are solved.

The invention discloses a rapid propagation method of gold leaf metasequoia tissue culture. In order to solve the problems that gold leaf metasequoia grafting propagation coefficient is low, cuttage and layering propagation nursery stock is prone to aging, and an existing tissue culture method is high in pollution rate, low in propagation coefficient, unstable and the like, the rapid propagation method of gold leaf metasequoia tissue culture comprises the following steps of explant disinfection, primary culture, secondary culture, rooting and hardening-off culture, acclimatization and transplanting, different culture compositions are used at different culture stages, reasonable acclimatization measures are adopted, and therefore a rapid propagation technical system of gold leaf metasequoia tissue culture is built. A regeneration plant obtained through the method is stable in botanical character and good in repeatability, the growth coefficient reaches 4-6, the rooting percentage reaches 72%, the survival rate of transplanting reaches 96%, and large-scale commercialization seedling production can be carried out.

The invention discloses a herbicide for an economic forest of metasequoia. The herbicide comprises the following components by mass: 30-40 parts of imazamox, 12-18 parts of lignosulfonate, 3-6 parts of Chinese honeylocust fruit powder, 5-9 parts of silkworm excrement, 10-13 parts of soapberry powder, 3-5 parts of ammonium sulfate, 2-5 parts of aluminum chloride, 3-6 parts of citric acid, 18-22 parts of cloransulam-methyl succinate, 6-13 parts of calcium dodecylbenzene sulfonate, 4-9 parts of urea and 20-30 parts of diatomite. The herbicide of the invention has higher control effect than off-season control effect and a wide herbicidal spectrum, can effectively prevent and eliminate grassy weeds and broadleaf weeds at the same time, reduces the use amount of pesticides, and is shortened in time needed for taking effect and free of harm to metasequoia seedlings.

The invention discloses a riverway ecological environment protection and restoration method which comprises the following steps: repairing an artificial wetland, making up the lack of the wetland in an earth cutting and landfill manner, planting aquatic plants such as yellow flag and reed in the wetland range, and performing separated protection and treatment on the wetland through the construction of an amphibious transition zone until a certain effect is generated in the treatment of the area; meanwhile, in wetland construction engineering, organic combination of the ecological environment and urban landscape is fully considered, and the landscape effect of the wetland is enriched by planting cinnamomum camphora, metasequoia, weeping willow, yellow flag , spiked loosestrife herb and thelike; the reason why the water quality of the riverway is damaged is not merely random discharge of waste water; according to the invention, through repairing the constructed wetland, implementing artificial oxygenation, repairing the ecological floating island, treating a pollution source, improving water quality, designing bank slope protection and designing a cross section, the burden of the river channel is reduced, and the ecological stable development of the river channel is ensured.

The invention discloses a full-season metasequoia tree fertilizer, which comprises the following components in parts by mass: 30-50 parts of night soil, 15-25 parts of peanut shell, 4-8 parts of potassium dihydrogen phosphate, 30-40 parts of pomace, 5-10 parts of biological enzymes, 4-8 parts of nitro-humic acid, 20-40 parts of lime powder, 30-36 parts of vinasse cake, 20-30 parts of plant ash, 3-6 parts of zymocyte, and 10-20 parts of magnesium sulfate. The fertilizer of the invention can be gradually supplied according to the nutrient composition requirement of the metasequoia tree, the fertilizer is released slowly, the manpower is saved, and the fertilizer has certain water retention function.

The invention discloses an ecological restoration method for a lakeside wetland. In the method, hygrophilous woody plants are planted in a lakeside zone to construct wetland plant communities. The hygrophilous woody plants comprise hygrophilous arbor and hygrophilous shrub, wherein the hygrophilous arbor comprises willows, metasequoia, ascendens mucronatum, taxodium ascendens brongn and bamboo; the hygrophilous shrub comprises iteaceae and S.integra thrnb; and the plants are planted in the way of shoot cottage or soil ball transplant. The hygrophilous woody plants are perennial plants, have alow growth rate, low biomass, low growth amount and low plant disposal pressure and do not need felling and refloating every year, so that the defects of frequently harvesting and refloating herbal emergent aquatic plant communities every year are overcome, the maintenance and management cost of lake wetland plant communities are reduced, the lakeside depositing rate is lowered, and the secondarypollution hidden danger to lake water bodies is relieved. Compared with the prior art, the method has the characteristics of convenient operation, maintenance and management, low maintenance cost, high ecological benefit, easy popularization and application and the like and can be used for ecological restoration engineering of lake and lakeside bottomlands, swamp marshes and shallow water zones.

The invention relates to a transplanting method and transplanting control structure for increasing the metasequoia transplanting survival rate. The transplanting control structure comprises metasequoia planted in a planting medium, an irrigation system and a sensing control system. The irrigation system comprises an atomizing micro sprinkler, drip pipes and a water pipe, the water pipe comprises adrip irrigation pipeline and a sprinkling irrigation pipeline, and the drip irrigation pipeline and the sprinkling irrigation pipeline are connected with the drip pipes and the atomizing micro sprinklers respectively and provided with a drip irrigation electromagnetic valve and a sprinkling irrigation electromagnetic valve respectively. The sensing control system comprises a sensing mechanism anda control mechanism; the sensing mechanism comprises a moisture sensor, an air humidity sensor and an air temperature sensor; the control mechanism controls on and off of the drip irrigation electromagnetic valve and the sprinkling irrigation electromagnetic valve according to feedback parameters of the sensing mechanism. The transplanting method and the transplanting control structure have advantages that the large metasequoia transplanting survival rate can be increased, practicality and high operability are achieved, reliable technical support is provided for large metasequoia transplanting, and economic benefits and landscape effects are improved.

The invention discloses a method based on TLS and UAV to automatically extract the height of trees in high canopy forests. UAV photogrammetry point cloud data and ground precise point cloud data are used to extract the highest point and lowest point of a single tree. Positioning coordinates and automatically identifying the highest point information, projecting the identification of the highest point and the positioning point on the xoy plane, judging the recognition accuracy, and quickly extracting the tree height value. It saves cost, improves efficiency, and replaces some manual investigations on the basis of improving the extraction accuracy of tree height, reducing a lot of manpower and material resources consumption. Test result shows, by the tree height extraction method that the present invention proposes, to the tree height estimation of metasequoia plantation, has obtained higher precision, and the tree height extraction value overall is closer to the actual value of actual measurement; Provide effective advice on resource assessment and business planning.

The invention provides a method for purifying a water body by utilizing wetland woody plants. The woody plants utilized by the method is one or several of bischofia javanica, callistemon viminalis, cephalanthus occidentalis, elaeocarpus hainanensis, barringtonia racemosa, elaeocarpus apiculatus, ilex rotunda, cleistocalyx operculatus, melaleuca bracteata, sapium sebiferum and metasequoia. By meansof the method disclosed by the invention, a function of purifying the water body through the woody plants is achieved, an obvious purifying effect on TN, TP, COD, NH4<+>-N, chroma and the like is achieved, a blank of aquatic woody plants in the field of water body purification is made up, and furthermore, the problems of water body purification and landscapes in winter are solved.