[Latin name] keteleeria calcarea cheng et lk fu [Chinese name] Huang Chih Keteleeria [Division] pinaceae Sonko [Class] Vulnerable Endangered [Protected] national levels to protect the plant level [Distribution], Guangxi Province, Lingui County, Guilin; Hunan, Jiang Yong; Liping, Guizhou, Dushan [Description] distribution to the north northeast of Guangxi; southwestern Hunan; southeastern Guizhou [Type] in the sub-tropical climate [Precipitation] 1250-1750 [Soil type] Rock Hill calcium limestone soil, yellow or red [] Terrain features in the lower part of the limestone hills [] Positive ecological characteristics of species [Community characteristics] [] Rotundifolia companion species Sapium sapium rotundifolium hemsl. Bean tree radermachera sinica (hance) hemsl. Pistache pistacia chinensis bunge Pteroceltis pteroceltis tatarinowii maxim. 3-4 [flowering] 10-11 [fruit] [Scientific] value of the ancient species endemic to China, have research value [] The economic value of the fine furniture and construction timber, limestone and garden tree species in Rock Hill [Protection] program lumbering area, choose good mother trees, seed breeding, to expand distribution [Reproduction] seed propagation, cutting propagation, or high-pressure [] Post-harvest cultivation requires dry off species, Tibetan Sand or bags, young stage to shade, prevent root rot
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Vulnerable status
黄枝油杉 渐危现状
黄枝油杉 渐危现状
黄枝油杉 渐危现状
Vulnerable species. Huang Chih-Keteleeria is a unique species, the narrow distribution area, resources are limited, the results of mother trees small, poor seed development, natural regeneration capacity is weak; combined with excellent material, the mass casual cut, reducing the number of days. Lower altitude (m) 200 Maximum altitude (m) 1100
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Morphology
Evergreen trees, 28 meters high, diameter up to 1.3 meters; bark brown or dark brown. Diastema, flaky peeling; year old branches glabrous or nearly hairless, yellow, 2 to 3 years old branches pale yellow-gray or gray; buds spherical. Leaves linear, arranged in two on the lateral branches, 1.5-4 cm long, 3.5-4.5 mm wide, the veins bulge on both sides, apex obtuse or retuse, base cuneate, green above, following along the veins on each side 18 a 21 holes line white powder, have short handle. Cones cylindrical, erect, long 11 a 14 cm diameter, 4-5.5 cm, pale green or yellowish green when ripe; kinds of scales rhombic-shaped round or nearly round, 2.5-3 cm wide and 2.5 a 2.8 cm , anti-tip curved, scales showing part of a dense short-haired, ear-like base on both sides; bud scales about types of scales 2 / 3, three crack tip, a narrow cleft in the triangular, lateral fissure obtuse, the upper edge of the irregular a fine-tooth; species in species with long wings and other types of scales, types of wings thick film quality, in the lower or middle wide.
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Ecological and biological characteristics
黄枝油杉 生态和生物学特征
黄枝油杉 生态和生物学特征
Huang Chih-Keteleeria is the sub-tropical species. The annual average temperature distribution 16-22 ℃, 1 monthly average temperature is 4.8 ℃, 7 23.5 a monthly average temperature 28 ℃; annual precipitation 1250-1750 mm; annual relative humidity of about 75 to 80%. Strict requirements on the soil, in the calcareous soil, yellow soil and red soil could grow. Rock Hill calcium limestone, but more common in shallow soil, dry soil or bare rock areas, and can grow on the red soil. Rock Hill, but more common in calcareous soil on limestone. In shallow soil, dry soil or bare rock areas, the saplings of the main root is short and stout, often over rough ground part, with well-developed cortex, can store more water. In Rock Hill on the growth, such as blocked the main root, lateral roots are developed, interspersed with strong, extended in the crevice, the ability of the Rock Hill-arid habitats. Common tree species associated with round leaves tallow sapinm rotundifolium hemsl. , Bean tree radermachera sinica (hance) hemsl. , Pistacia pistacia chinensis bunge, Pteroceltis pteroceltis tatarinowii maxim. Other positive species, seedling resistance to the side a little shade, 4 - 6th instar, the need ample sun, 15 - 20 years, the results of around 200 years or more trees can still result. Good natural regeneration, seed can be flapping in the wind, trees felled, it will still sprout. 3 --- April flowering, fruit ripening from October to November.
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Conservation value
黄枝油杉 保护价值
黄枝油杉 保护价值
Huang Chih-Keteleeria is an ancient tree species endemic to China, with research value. Wood than the hard, straight texture, structure, fine, fine furniture and construction timber. Trunk straight, majestic tall, dense foliage, suitable for garden green; developed root system, the ability of drought, Rock Hill, Rock Hill is a limestone fine green trees.
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Protection measures
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Recommended that a higher concentration of yellow sticks Keteleeria areas such as Guangxi Lingui two ponds, four ponds, etc. designated as logging ban areas, strict protection, and _select_ high quality mother trees, seed breeding, introduction and cultivation of active and expanding distribution.
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Cultivation
Seed propagation. Cones in late October each year to mature in early November, should be promptly harvested, dried off the kind of post-harvest, the seeds of _select_ed full possession of Sand or bags. Next March sowing, seedlings need shade, and to control root rot. Seedlings can be transplanted or cut the root process several times in order to promote the growth of lateral roots, as in Rock Hill on the plant, it is appropriate Yingyang Bei nursery. This species can reproduce with cuttings or high-pressure method.
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News Video
黄枝油杉 新闻视频
黄枝油杉 新闻视频
黄枝油杉 新闻视频
黄枝油杉 新闻视频
黄枝油杉 新闻视频
黄枝油杉 新闻视频
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黄枝油杉 新闻视频
Pingtang found a hundred yellow sticks Keteleeria http://www.ptjp.gov.cn/gzpt/mtjj/2008/1110/08_11_10_16_51_44_KHJ9B.html
