哀牢山中山湿性常绿阔叶林林窗更新研究

应用生态学报 ›› 2003, Vol. ›› Issue (9): 1399-1404.

• 研究论文 • 下一篇

哀牢山中山湿性常绿阔叶林林窗更新研究

何永涛^1,3, 李贵才^2,3, 曹敏³, 唐勇³

1. 中国科学院地理科学与资源研究所, 北京 100101;
2. 中国科学院遥感应用研究所遥感信息科学开放实验室, 北京 100101;
3. 中国科学院西双版纳热带植物园, 昆明 650223

收稿日期:2001-11-23 修回日期:2002-05-24 出版日期:2003-09-15
通讯作者: 曹敏
基金资助:
中国科学院“九·五”科技攻关重大项目(KZ951-A1-104);中国科学院知识创新工程重大项目(KZCXI-SW-01-02);中国科学院地理科学与资源研究所知识创新工程所长基金资助项目(SJIOG-C00-01)

Regeneration in gaps of the middle-mountain moist evergreen broad-leaved forest of Ailao Mountains

HE Yongtao^1,3, LI Guicai^2,3, CAO Min³, TANG Yong³

1. Institute of Geographical Science and Natural Resource Research, CAS, Beijing 100101, China;
2. Laboratory of Remote Sensing Information Science, Institute of Remote Sensing Application, CAS, Beijing 100101, China;
3. Xishuangbanna Tropical Botanic Garden, CAS, Kunming 650223, China

Received:2001-11-23 Revised:2002-05-24 Online:2003-09-15

摘要/Abstract

摘要： 对云南哀牢山中山湿性常绿阔叶林林窗更新状况的调查结果表明,林内优势树种在林窗阶段不占优势,其在林窗内的重要值显著低于成熟林分;林窗内外的乔木幼苗在组成上存在较大差异,林窗内的幼苗多样性(H=2.73,D=0.89)高于林冠下(H=2.25,D=0.82),二者的Jaccard相似系数只有0.6,许多树种的幼苗只出现在林窗内;林窗内的乔木幼苗密度(38636株·hm^-2)远远高于林冠下(17323株·hm^-2)林窗内和林冠下的乔木幼苗(H≤50cm)均以高度为11～20cm幼苗的在数量上占优势,但林窗内高度超过20cm的幼苗比例明显高于林冠下;林窗大小对乔木幼苗更新有重要影响,不同树种的幼苗密度高峰出现在不同大小级别的林窗内。

Abstract: On the basis of investigation on gaps in the middle-mountain moist evergreen broad-leaved forest of Ailao Mountains Natural Reserve, Yunnan Province, tree seedlings (H<50 cm) composition were compared in the gaps and the non-gap stand.The results showed that the dominant tree species of the forest were not preponderated over others in the gaps.The composition of tree seedlings in the gaps differed from those in the non-gap stand.The species diversity of tree seedlings in the gaps(H= 2.73, D = 0.89)were higher than those in the non-gap stand (H = 2.25, D=0.82), and the Jaccard correlative coefficient were only 0.6.The density of tree seedlings in the gaps (38636 N·hm^-2) was much higher than that in the non-gap stand (17323 N·hm^-2), of which many species were only found in the gaps.The dominant height of the tree seedling in the gaps and the non-gap stand were also 11～20 cm, but the percentage of the tree seedlings higher than 20cm in the gaps was significantly higher than that in the non-gap stand.The gap sizes had important impact on the tree seedling germination, and different species of tree seedling dominated in different size classes of gap.

中图分类号:

S718.5

何永涛, 李贵才, 曹敏, 唐勇. 哀牢山中山湿性常绿阔叶林林窗更新研究[J]. 应用生态学报, 2003, (9): 1399-1404.

HE Yongtao, LI Guicai, CAO Min, TANG Yong. Regeneration in gaps of the middle-mountain moist evergreen broad-leaved forest of Ailao Mountains[J]. Chinese Journal of Applied Ecology, 2003, (9): 1399-1404.

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哀牢山中山湿性常绿阔叶林林窗更新研究

Regeneration in gaps of the middle-mountain moist evergreen broad-leaved forest of Ailao Mountains

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