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庞泉沟自然保护区华北落叶松土壤种子库的研究
引用本文:郭晋平,薛俊杰,李世广,王俊田.庞泉沟自然保护区华北落叶松土壤种子库的研究[J].武汉植物学研究,1998,16(2):131-136.
作者姓名:郭晋平  薛俊杰  李世广  王俊田
作者单位:1. 山西农业大学林学系,山西太谷,030801
2. 庞泉沟自然保护区,山西交城,030510
基金项目:国家自然科学基金!39600115
摘    要:采用样地内小样方取样,物理方法分离,室内测量,试验,分析的方法,对庞泉沟国家级自然保护区内,华北落叶松4个林型的林下土壤种子数量,质量及分布进行了研究。分析了影响林下土壤种子数量的因素,提供了华北落叶松土壤种子库的基本背景。

关 键 词:华北落叶松  土壤种子库  数量  质量  分布格局
收稿时间:1997-1-6
修稿时间:1997-3-31

STUDY ON SOIL SEEDBANK OF LARIX PRINCIPIS-RUPPRECHTII UNDER CANOPY IN PANGQUANGOU NATIONAL NATURAL RESERVE, SHANXI, CHINA
Guo Jinping,Xue Junjie,Li Shiguang,Wang Juntian.STUDY ON SOIL SEEDBANK OF LARIX PRINCIPIS-RUPPRECHTII UNDER CANOPY IN PANGQUANGOU NATIONAL NATURAL RESERVE, SHANXI, CHINA[J].Journal of Wuhan Botanical Research,1998,16(2):131-136.
Authors:Guo Jinping  Xue Junjie  Li Shiguang  Wang Juntian
Affiliation:1. Shanxi Agricultural University Taigu, Shanxi 030801;2. Pangquangou National Natural Reserve Jiaocheng, Shanxi 030510
Abstract:By sampling quarters in sample plots, the density, quality and distributionpattern of soil seedbank of Larix principis-rupprechtii under canopy in Pangquangou National Natural Reserve are studied. The affecters controlling soil seedbank characters areanalysed to provide the background of seedbank under canopy of Larix principis-rupprechtii forest for forther research. It present some valuable results for populus,community and landscape ecological researches in the area. After a common seeding-year,beforegermination in the next spring,the mean Total Soil Seed Density (TSSD) under canopyof four Larix forest types is up to 426 grain/m2 Among the four forest types,the orderof TSSD is Carex-Larix forest>Herba-Larix forest>Betula-Larix forest>Frutex-Larix forest. The mean Vital Soil Seed Density (VSSD),is 124 grain/m2 that is 29. 1 % ofTSSD,the order of VSSD among four forest types is changed to that Carex-Larix forest>Herba-Larix forest>Betula-Larix forest>Frutex-Larix forest. The germination rateof TSSD is 24. 9%. The seed density that could germinate in the next year is 106grain/m2. The seed distribution patterns in study area,controled by seeding wood distribution pattern and micro-topographical heterogeneity,present some degrees of clusteringtrends. The seedbank of Larix principis-rupprechtii under canopy is big enough in fourforest types to provide seed for regeneration in forest gaps after canopy disturbance instudy area.
Keywords:Larix princiPis-rupprechtii  Soil seedbank  Seed density  Seed quality  Distribution pattern
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