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| 天童常绿阔叶树种栲树生殖个体大小及其生殖构件特征 | |
| 引用本文： | 陈波,宋永昌,达良俊. 天童常绿阔叶树种栲树生殖个体大小及其生殖构件特征[J]. 植物研究, 2004, 24(1): 80-86 |
| 作者姓名： | 陈波 宋永昌 达良俊 |
| 作者单位： | 1. 杭州师范学院生命科学学院, 杭州 310036; 2. 华东师范大学环境科学系, 上海 200062 |
| 基金项目： | 国家重点基础研究发展计划(973计划) |
| 摘 要： | 对浙江天童木荷-栲树林内的常绿阔叶树种栲树(Castanopsis fargesii Franch.)的生殖个体大小、生殖构件的分布及其动态变化特征进行了研究。结果表明, 该地区栲树生殖个体的胸径在17~50 cm 间, 平均胸径为31. 2±8.0 cm, 平均年龄约36.3±6.6 年;林缘附近的生殖个体小于木荷-林内。相对稳定的群落和比较丰富的土壤养分条件有利于生殖枝数量和花序数量的增多。栲树生殖个体的数量在两年中变化较大, 部分栲树个体可以在连续年份中生殖。从枝系水平分析:在持续生殖的栲树个体上, 生殖枝数量有明显变化, 并非所有的生殖枝在两年中都可开花或结果, 保持连续生殖的枝系约占48.2%。栲树果序枝数量在连续年份有明显差异(p < 0.01), 而且果序枝上的幼蕾数、果实数量及结实率等都有明显差异(p < 0.05)。 |
| 关 键 词： | 生殖大小 生殖构件 栲树 天童国家森林公园 |
| 收稿时间： | 2003-02-06 |
| 修稿时间： | 2003-02-06 |
Study on reproductive unit size and reproductive modules dynamics of Castanopsis fargesii in Tiantong National Forest Park,Zhejiang Province |
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| CHEN Bo SONG Yong-Chang DA Liang-Jun. Study on reproductive unit size and reproductive modules dynamics of Castanopsis fargesii in Tiantong National Forest Park,Zhejiang Province[J]. Bulletin of Botanical Research, 2004, 24(1): 80-86 | |
| Authors: | CHEN Bo SONG Yong-Chang DA Liang-Jun |
| Affiliation: | 1. School of Life Sciences, Hangzhou Normal College, Hangzhou 310036; 2. Department of Environmental Science, East China Normal University, Shanghai 200062 |
| Abstract: | Reproductive unit size and reproductive modules dynamics of Castanopsis fargesii in Tiantong National Forest Park (TNFP)(29°48'N, 121°47'E)was studied in this paper.The results showed at the number of reproductive C.fargesii individuals and their size were closely related to habitat.The data suggested that DBH of reproductive individuals ranged from 17 to 50 cm, with average of 31. 2& #177;8.0 cm, during the two year's census in TNFP.According to models these individual's age scaled 23.8 to 51. 1 years, with average of 36.3& #177;6.6 years.The DBH of reproductive individuals in the forest edge are smaller than that in forest. The results also suggested that not all individuals necessarily produced fruit in the successive years and the number of reproductive individuals differed markedly during the successive two years.The number of reproductive individuals in 2000 was 2.26 times as much as that in 1999.Additionally, not all reproductive branch within these individuals continuously produced fruit in two successive years, nearly 48.2% of reproductive branches produced fruit in every year.The number of the successive reproductive branch, the number of developmental fruit per successive reproductive branch and fruit-set ratio varied obviously between two years. |
| Keywords: | reproduvtive unit size reproductive modules Castanopsis fargesii TNFP |
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