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| 沙地樟子松天然林自然落种和土壤种子库的特征 | |
| 引用本文： | 闫德仁,杜敏,王玉华,张宝珠,敖文明,乔殿学,阿日根扎.沙地樟子松天然林自然落种和土壤种子库的特征[J].东北林业大学学报,2009,37(11). |
| 作者姓名： | 闫德仁 杜敏 王玉华 张宝珠 敖文明 乔殿学 阿日根扎 |
| 作者单位： | 1. 内蒙古林业科学研究院,呼和浩特,010010 2. 呼伦贝尔市林业研究所 3. 鄂温克旗林业局 |
| 基金项目： | 国家"十一五"科技支撑项目，内蒙古科技厅项目 |
| 摘 要： | 研究了呼伦贝尔沙地3种类型的樟子松天然林内天然母树的自然落种和土壤种子库特征.结果表明:土壤种子库中种子数量的空间分布特征和母树自然落种数量的空间分布规律相同.从树干或林缘向外,随着传播距离的增加,土壤种子库的种子数量和母树自然落种的种子数量均有降低的趋势.从树干或林缘向外4～5m范围内樟子松母树自然落种数量最多,而后随着距离的增加,自然落种数量明显减少.樟子松天然林母树自然落种的传播距离范围可以达到25m,表明在适宜条件下,沙地樟子松天然林通过自然更新,能够迅速扩展林缘,扩大种群. |
| 关 键 词： | 樟子松天然林 种子雨 种子库 传播距离 呼伦贝尔沙地 |
Characteristics of Natural Seed Dispersal and Soil Seed Bank for Natural Pinus sylvestris var.mongolica Forests in Sandy Land |
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| Yan Deren,Du Min,Wang Yuhua,Zhang Baozhu,Ao Wenming,Qiao Dianxue,Ari Genza.Characteristics of Natural Seed Dispersal and Soil Seed Bank for Natural Pinus sylvestris var.mongolica Forests in Sandy Land[J].Journal of Northeast Forestry University,2009,37(11). | |
| Authors: | Yan Deren Du Min Wang Yuhua Zhang Baozhu Ao Wenming Qiao Dianxue Ari Genza |
| Institution: | Yan Deren(Inner Mongolia Academy of Forestry,Hohhot 010010,P.R.China),Du Min,Wang Yuhua(Hulunbeier Academy of Forestry),Zhang Baozhu,Ao Wenming,Qiao Dianxue,Ari Genza(Ewenkeqi Forestry Bureau) |
| Abstract: | A survey was conducted to study the characteristics of natural seed dispersal and soil seed bank in three types of natural Pinus sylvestris var.mongolica forests in Hulunbeier sandy land.Results show that the spatial distribution characteristics of seed quantity in soil seed bank are similar to the spatial distribution pattern of amount of natural dispersal of seeds.With the increase of distance,both the seed quantity in soil seed bank and the amount of natural dispersal of seeds at outside trunk or forest ... |
| Keywords: | Natural Pinus sylvestris var mongolica forests Seed rain Seed bank Propagation distance Hulunbeier sandy land |
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