| 山西省油松天然林的地理分布和种群变异规律的研究 |
| |
| 引用本文： | 李文荣,齐力旺,张中秋.山西省油松天然林的地理分布和种群变异规律的研究[J].山西农业大学学报(自然科学版),1986(2). |
| |
| 作者姓名： | 李文荣 齐力旺 张中秋 |
| |
| 作者单位： | 山西农业大学林学系，山西农业大学林学系，山西农业大学林学系 黑茶山林业局 |
| |
| 摘 要： | 经过1983和1984两年调查,从山西油松分布区的53个林场的64个天然林分中,采集针叶、球果和种子样本,测定了13个性状和进行生长量的测定与比较分析,结果表明,13个性状林分间的差异达到极显著水平。有的性状与经纬度、气候条件的相呆性也很强。总的趋势是,气候干旱寒冷,针叶缩短变窄,球果和种子翅长、翅宽增大,种子大小和千粒重却由北向南增大加重。各种性状的变异主要发生在三个方向上,即沿山西油松整个分布区长轴由西北经太岳山到东南方向的变异;西部吕粱山,中部云中山、太岳山,东部太行山,同经度下纬度的变异;从西向东同纬度下经度的变异。同时,各性状均存在着随机变异的现象。在年生长量上,也呈现由北到南和从西向东逐渐增加的趋势。尤其是胸径的年生长量与经度呈显著的正相关,随着经度的增加,胸径年生长量越粗。
|
| 关 键 词： | 山西 地理分布 种群 变异 油松 |
A STUDY ON THE GEOGRAPHIC DISTRIBUTION AND THE STATUTES OF POPULATION VARIATION OF THE NATURAL FOREST OF Pinus Tabulaeformis Carr. IN SHANXI PROVINCE |
| |
| Li Wenrong Qi Liwang Zhang Zhongqiu.A STUDY ON THE GEOGRAPHIC DISTRIBUTION AND THE STATUTES OF POPULATION VARIATION OF THE NATURAL FOREST OF Pinus Tabulaeformis Carr. IN SHANXI PROVINCE[J].Journal of Shanxi Agricultural University,1986(2). |
| |
| Authors: | Li Wenrong Qi Liwang Zhang Zhongqiu |
| |
| Institution: | Department of Forestry |
| |
| Abstract: | In order to clarify the features of geographic distribution and the statutes of population variation of a natural forest of Pinus Tabulaeformis Carr. in SHANXI province, a project was carried out from 1983 to 1984. We studied the needle, cone and seed samples of Pinus Tabulaeformis Carr. from 64 natural stands of 53 rorest farms distributed in SHANXI province. Measurement and analysis of 13 traits were made. The result has showed that the difference among stands of 13 traits has reached highly significantly difference at the P=0.01 level. There arestrong correlation between same traits and longitude, latitude, and climatic conditions respectively. The general tendency is that, as climate becomes drier and colder from south to north, the needle becomes shorter andnarrower and the cone bigger; seed wing longer and wilder, but size of seed bigger; and thousand-grain weight heavier. The variation of every trait happens mainly in three geographic directions——the traits from northwest to southeast through TAIYUE mountains in the whole distribution districts; the traits variation of latitude in same lougitude in the western LULIANG mountains, and YUNZHONG mountains; the variation of longitude in same latitude from west to east. In the meantime, every trait is of random variation in limited region. Annual increment shows the tendency of gradualincreasing from north to sonth and from west to east. There was significant positive correlation between annual increment of diameter breast-high and longitude. The higher the longitude there will be, the wider the annual increment of diameter breast-high. |
| |
| Keywords: | shanxi Geographic population Variation Pinus tabulaeformis Carr |
| 本文献已被 CNKI 等数据库收录！ |
|
