华东师范大学学报(自然科学版) ›› 2010, Vol. 2010 ›› Issue (3): 1-9.

• 浙江天童受损常绿阔叶林实验生态学研究 •    下一篇

浙江天童受损常绿阔叶林实验生态学研究（Ⅳ）：土壤种子库在受损常绿阔叶林恢复初期中的作用

宋垚彬1，张奇平1，达良俊1,3   

  1. 1. 华东师范大学 环境科学系，上海 200062；2. 浙江天童森林生态系统国家野外科学观测研究站， 浙江 宁波 315114；3. 华东师范大学 上海市城市化生态过程与生态恢复重点实验室，上海 200062
  • 收稿日期:2009-01-21 修回日期:2009-04-19 出版日期:2010-05-25 发布日期:2010-05-25
  • 通讯作者: 达良俊

Experimental ecology research on destroyed evergreen broad leaved forests in TNFP, Zhejiang (Ⅳ): Contribution of seed bank to early restoration of destroyed evergreen broad leaved forests

SONG Yaobin1, ZHANG Qiping1, DA Liangjun1,3   

  1. 1. Department of Environment Science, East China Normal University, Shanghai 200062, China;2. Tiantong Forest Ecosystem National Research Station, Ningbo Zhejiang 315114, China;3. Shanghai Key Laboratory for Ecology of Urbanization Process andEcorestoration, East China Normal University, Shanghai 200062, China
  • Received:2009-01-21 Revised:2009-04-19 Online:2010-05-25 Published:2010-05-25
  • Contact: DA Liang jun

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摘要： 模拟了常绿阔叶林的4种不同受损程度（间伐大树，清理下木，清除地上植被以及植被和表土完全破坏），于2003年10月在天童国家森林公园内各设置1个受损样方.通过分析土壤种子库萌发格局、种类组成及其与受损样地第一年恢复物种的相似性，探明土壤种子库在受损常绿阔叶林恢复初期中的作用.结果表明，（1）在16个0.5 m×0.5 m的取样面积上，土壤种子库共萌发出995株幼苗，密度为248.75粒/m2，分属21科27属28种，其中乔木7种，灌木8种，藤本4种，草本9种.（2）土壤种子库对4种干扰方式的样地物种恢复贡献率为：Ⅰ号（0.467）＞Ⅳ号（0.389）＞Ⅱ号（0.368）＞Ⅲ号（0）.（3）檫木（Sassafra tzumu）、拟赤杨（Alniphyllum fortunei）、大青（Clerodendrum cyrtophyllum）和山鸡椒（Litsea cubeba）等先锋种可通过土壤种子库大量更新；米槠（Castanopsis carlesii）和石栎（Lithocarpus glaber）等虽具有种子库，但数量少；而南酸枣（Choerospondias axilliaris）和香樟（Cinnamomum camphora）等种子不能通过土壤种子库实现更新.研究表明土壤种子库对天童地区受损常绿阔叶林的恢复作用比较有限.

关键词: 生态恢复, 砍伐样地, 萌发格局, 相似性, 生态恢复, 砍伐样地, 萌发格局, 相似性

Abstract: Four destroyed evergreen broadleaved forest plots were established by simulating the common disturbance types (removing trees, H>8 m; removing trees, H<8 m; removing all above ground plant; removing all aboveground plant and 010 cm depth surface soil) in Tiantong National Forest Park, in October, 2003. For understanding the contribution of seed bank to the restoration of destroyed evergreen broad leaved forests, the seed germination pattern, species composition, and the similarity between seed bank and the seedlings composition of first year restoration have been studied in this paper. The results showed that there were 995 seeds in seed bank and the seed abundance was 248.75 m-2, which belonged to 28 species, 27 genera and 21 families. The role of seed bank to 4 plots were Ⅰ (0.467) >Ⅳ (0.389) >Ⅱ (0.368) >Ⅲ (0). The pioneer species Sassafras tzumu , Alniphyllum fortunei , Clerodendrum cyrtophyllum , Litsea cubeba germinated and recruited abundantly from seed bank while the climax species Castanopsis carlesii and Lithocarpus glaber had little role to vegetation restoration. The species Choerospondias axillaries and Cinnamomum camphora mainly regenerated from exotic seed source. Conclusively, the soil seed bank exerted little role to the restoration of the evergreen broadleaved forests in this area.

Key words: destroyed plot, germination pattern, similarity, ecological restoration, destroyed plot, germination pattern, similarity

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