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| 天目山老龄柳杉林土壤种子库状态与更新 | |
| 引用本文： | 俞飞,侯平,陈全明,王祖良.天目山老龄柳杉林土壤种子库状态与更新[J].浙江林学院学报,2008,25(4):464-468. |
| 作者姓名： | 俞飞 侯平 陈全明 王祖良 |
| 作者单位： | 1. 浙江林学院林业与生物技术学院,浙江临安,311300 2. 浙江省临安市上甘街道林业管理站,浙江,临安,311300 3. 浙江省天目山国家级自然保护区管理局,浙江临安,311300 |
| 基金项目： | 浙江省自然科学基金资助项目 |
| 摘 要： | 采用典型样线法对浙江天目山老龄柳杉Cryptomeria fortunei林的土壤种子库状态及更新特征展开研究，以此解译柳杉种子库的基本特征，为柳杉株天然更新机制研究奠定基础。结果表明：天目山老龄柳杉林土壤种子库属于短暂性土壤种子库，而且产生的种子活力低下，发育不完善的种子占60％～70％，霉烂种子占30％～40％。种子活力低下，枯落物层过厚，缺乏光照及化感作用等因素导致林下幼苗更新存在障碍，需进行人为更新才能实现其可持续生长。 |
| 关 键 词： | 森林生态学 柳杉 土壤种子库 天然更新 天目山 |
Soil seed bank and natural regeneration in an old-growth Crptomeria fortunei stand on Mount Tianmu |
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| Institution: | YU Fei, HOU Ping, CHEN Quan-ming, WANG Zhu-liang (1. School of Forestry and Biotechnology, Zhejiang Forestry College, Lin＇an 311300, Zhejiang, China; 2. Forest Station of Shanggan Town, Lin＇an 311300, Zhejiang, China; 3. Management Office, National Nature Reserve of Mount Tianmu, Lin＇an 311300, Zhejiang, China.) |
| Abstract: | Soil seed bank in Cryptomeriafortunei stand had never been studied before, but the status of the forest＇s soil seed bank has important influence on the forest＇s development. The soil seed bank and regeneration of the old-growth Cryptomeria fortunei on Mount Tianmu were determined using sample line approach. Results showed that the soil seed bank was short-term persistent as there were no vital seeds in the seed bank after the spring germination period with seeds being 60% - 70% immature and the rest rotten. Thus, one reason for the failure of natural regeneration of old-growth C. fortunei is low vitality, a heavy litter layer, lack of sunshine, and allelopathy; therefore artificial reforestation should be considered. |
| Keywords: | forest ecology Cryptomeriafortunei soil seed bank natural regeneration Mount Tianmu |
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