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| 辽东山区长白落叶松天然更新调查 | |
| 引用本文： | 刘足根,朱教君,袁小兰,谭辉.辽东山区长白落叶松天然更新调查[J].林业科学,2007,43(1):42-49. |
| 作者姓名： | 刘足根 朱教君 袁小兰 谭辉 |
| 作者单位： | 1. 中国科学院沈阳应用生态研究所,沈阳,110016;江西省环境保护科学研究院,南昌,330029 2. 中国科学院沈阳应用生态研究所,沈阳,110016 3. 江西农业大学商学院,南昌,330013 |
| 基金项目： | 中国科学院"百人计划"，国家自然科学基金 |
| 摘 要： | 调查辽东山区长白落叶松人工林的长白落叶松天然更新数量、幼苗的存活和生长状况以及其幼树出现的生境.结果表明:在结实的长白落叶松人工林内均有1年生落叶松幼苗,其数量与人工林种子库落叶松种子数量有关,其存活和生长(高生长和叶片数量)状况明显受林分开阔度、地面植被盖度和枯落物的影响.1年生长白落叶松幼苗在林内生长缓慢,一般高生长不超过6 cm,地径生长不超过0.1 cm,叶片数量不超过25针.长白落叶松天然更新幼苗4月末开始出现,6月份幼苗数量最多,9月份林内大部分幼苗死亡.这表明长白落叶松幼苗在林下不能正常存活和生长,而影响其存活和生长的主要因素是光照、草本灌木和地面枯落物.另外,长白落叶松林下很难见到幼树,只有在有种源、光照充足、草本灌木和枯落物少,以及土壤较湿润的生境中能见到其幼树. |
| 关 键 词： | 长白落叶松 幼苗 存活和生长 幼树 |
| 文章编号： | 1001-7488(2007)01-0042-08 |
| 修稿时间： | 2006-04-11 |
Investigation and Analysis of the Natural Regeneration of Larix olgensis in Mountain Regions of Eastern Liaoning Province, China |
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| Liu Zugen,Zhu Jiaojun,Yuan Xiaolan,Tan Hui.Investigation and Analysis of the Natural Regeneration of Larix olgensis in Mountain Regions of Eastern Liaoning Province, China[J].Scientia Silvae Sinicae,2007,43(1):42-49. | |
| Authors: | Liu Zugen Zhu Jiaojun Yuan Xiaolan Tan Hui |
| Institution: | (1. Institute of Applied Ecology, Chinese Academy of Sciences Shenyang 110016; 2. Jiangxi Research Institute of Environmental Science and Protection Natwhang 330029; 3. Commercial School of Jiangxi Agriculture University Nanchang 330013 |
| Abstract: | Larix olgensis is one of the important commercial timber tree species in northeastern China, but it could not naturally regenerate in the L.olgensis forests. Furthermore, there was little study on its natural regeneration. This paper examined the natural regeneration of L.olgensis in the plantation. The natural regeneration of L.olgensis included the number, survival and growth of one-year seedling and the appearing environment of sapling. The results indicated some one-year seedlings would appear in fruiting L.olgensis plantation, and its number was correlative with seed number of seed bank, and its survival and growth (height and leaf number) was influenced by canopy openness of forest and coverage of vegetation and thickness of litter. One-year seedling of L.olgensis grew slowly in L.olgensis plantation, and its height, base diameter and leaf number was not more than 6 cm, 0.1 cm and 25, respectively. In L.olgensis plantation, seedling emergence of L.olgensis began in April, and the most number of seedling appeared in June, but almost all seedlings disappeared in September. These results confirmed the seedling of L.olgensis did not survive and grow in L.olgensis plantation, and the major factors affecting the survival and growth of L.olgensis seedling were light, herb, shrub and litter. In generally, saplings could be seen in the habitat where there were seed resource and enough light availability, little ground cover, and wet soil in the L.olgensis forests. |
| Keywords: | Larix olgensis seedling survival and growth sapling |
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