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| 榆林市榆阳区樟子松地径、胸径、树高的调查 | |
| 引用本文： | 张忠,姬康,申世永. 榆林市榆阳区樟子松地径、胸径、树高的调查[J]. 内蒙古林业科技, 2012, 38(2): 55-56 |
| 作者姓名： | 张忠 姬康 申世永 |
| 作者单位： | 1. 陕西榆林市樟子松种子园,陕西榆林,719000 2. 陕西榆阳区林业工作站,陕西榆林,719000 3. 陕西榆林市林业工作站,陕西榆林,719000 |
| 摘 要： | 通过调查41株榆林市榆阳区内生长的樟子松,发现胸径/地径比值相对恒定,数值是0.70倍左右,其范围在0.67～0.75之间,胸径、地径基本同步加粗。树高/地径比值总体呈现出树越粗、树高/地径比值越小的规律,最大值是46.27倍,最小值是31.72倍,树高的生长量随树木的加粗呈现出放缓的规律。 |
| 关 键 词： | 樟子松 胸径 地径 树高 |
Investigation on Diameter, Ground Diameter and Height of Pinus sylvestris var. mongolica Litv. in Yuyang District, Yulin |
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| ZHANG Zhong,JI Kang,SHEN Shi-yong. Investigation on Diameter, Ground Diameter and Height of Pinus sylvestris var. mongolica Litv. in Yuyang District, Yulin[J]. Inner Mongolia Forestry Science and Technology, 2012, 38(2): 55-56 | |
| Authors: | ZHANG Zhong JI Kang SHEN Shi-yong |
| Affiliation: | ZHANG Zhong, JI Kang , SHEN Shi -yong ( 1. Yulin Seed Orchard of Mongolian Scotch Pine, Shaanxi, Yulin 719000, China; 2. Yuyang District Forestry Working Station, Shaanxi, Yulin 719000, China; 3. Yulin Forestry Working Station. Shaanxi, Yulin 719000, China) |
| Abstract: | Through investigating 41 strains of Pinus sylvestris var. mongolica Litv. planted in Yuyang District, Yulin, the results show that the ratio of diameter to ground diameter keeps constant relatively with the value at 0. 7 times and the range from 0. 67 to 0. 75, and diameter and ground diameter overstrike synchronously. The ratio of height to ground diameter shows the law that the bigger the dianmeter is, the smaller the ratio of height ro ground diameter is, with the maximum value of 46. 27 times and the minimum value of 31.72 times. And the height is opposite to the overstriking of trees. growth |
| Keywords: | Pinus sylvestris var. mongolica Litv. diameter ground diameter height |
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