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| 二滩库区锥连栎林土壤种子库和幼苗格局初步研究 | |
| 引用本文： | 费世民,何亚平,王鹏,蒋俊明,陈秀明,何飞,雷彻洪,涂代伦.二滩库区锥连栎林土壤种子库和幼苗格局初步研究[J].四川林业科技,2004,25(2):15-20. |
| 作者姓名： | 费世民 何亚平 王鹏 蒋俊明 陈秀明 何飞 雷彻洪 涂代伦 |
| 作者单位： | 1. 四川省林业科学研究院,四川,成都,610081 2. 攀枝花市林业局,四川,攀枝花,617002 3. 盐边县林业局,四川,盐边,617002 |
| 基金项目： | “十五”国家科技攻关专题“中国森林生态网络体系建设攀枝花点的研究”(2 0 0 2BA5 16A17 19)，四川省林业厅院省合作项目“森林生态网络工程体系技术研究”(合作 2 0 0 2 2 4) |
| 摘 要： | 本文对二滩库区群落优势树种锥连栎林土壤种子库和幼苗分布格局进行了调查研究，结果表明：(1)锥连栎群落土壤种子库不存在霉烂种子，虫蛀种子的数目较少，仅为2.08个／m^2；而败育种子和种子壳数目相对较多，平均密度分别达到42．78个／m^2和42.96个／m^2。(2)锥连栎土壤种子库组成中完好种子的密度为0．28个／m^2；雨季已萌发的种子密度为0．92个／m^2。(3)土壤种子库各组成的垂直分布较为明显，随土层厚度加深而减少，但霉烂种子例外。(4)经测算，锥连栎种子散布后的主要命运是动物捕食和转移，种子的保存率和萌发率分别仅占到单个树木种子产量的0、59％和1．95％。(5)在锥连栎树木分布的上坡有较多的萌生苗，而下坡实生苗的数量较多。(6)距树干距离不同，萌生苗和实生苗的分布模式有差异。 |
| 关 键 词： | 锥连栎 土壤种子库 幼苗 种群更新 |
| 文章编号： | 1003-5508(2004)02-0015-06 |
| 修稿时间： | 2004年4月26日 |
The Soil Seed Bank and Seedling Patterns of Quercus franchetii Forests in the Valleys of Ertan Reservior |
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| FEI Shi-min,HE Ya-ping,WANG Peng,JIANG Jun-ming CHEN Xiu-ming,He Fei,LEI Che-hong,TU Dai-lun.The Soil Seed Bank and Seedling Patterns of Quercus franchetii Forests in the Valleys of Ertan Reservior[J].Journal of Sichuan Forestry Science and Technology,2004,25(2):15-20. | |
| Authors: | FEI Shi-min HE Ya-ping WANG Peng JIANG Jun-ming CHEN Xiu-ming He Fei LEI Che-hong TU Dai-lun |
| Institution: | FEI Shi-min~1 HE Ya-ping~1 WANG Peng~1 JIANG Jun-ming~1 CHEN Xiu-ming~1 He Fei~1 LEI Che-hong~2 TU Dai-lun~3 |
| Abstract: | Quercus franchetii forest is one of the important communities in the semi-drought evergreen broad-leaved hardwoods in the valleys of Ertan Reservior.However,a study of its soil seed bank and regeneration is lacking.In this paper,the soil seed bank components and seedling patterns in Quercus franchetii communities in the rainy season of the year 2003 were investigated.The results showed:(1)No decayed seeds and only a few insect-damaged seeds with a density of 2.08/m~2 were found in the soil seed bank of the dry-hot valley.However,the relatively higher seed amounts were also encountered with an averaged density of 42.78/m~2 in aborted seeds and 42.96/m~2 in cups.(2)Only 0.28/m~2 sound seeds in the soil seed bank of Quercus franchetii forests were retained till the rain season next year,and 0.92/m~2 of seeds had germinated at this time.(3)The soil seed bank showed an obviously vertical distribution,the seeds decreased along with the deepening of soil layer thickness,but an exception existed in decayed seeds.(4)By measuring,the main fortune of seeds after dispersal was animal predation and transfer,and the retaining and germinating seeds respectively occupied 0.59% and 1.95% of the single seed production.(5)There were more seedlings from roots than from seeds in the upward slope of Quercus franchetii tree,but more seedlings from seeds than from roots in downward slope.(6)With a different distance to tree trunk under the canopy,the seedlings from seeds and roots had obviously different distributing patterns. |
| Keywords: | Quercus franchetii forests Soil seed bank Seedling Population regeneration |
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