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• 研究报告 • 上一篇    下一篇

长白山地区不同林型红松种群生态位特征

包也1,2,孟莹莹1,2,周旺明1,于大炮1,周莉1,魏亚伟1,2,方向民1,2,代力民1**   

  1. 1森林与土壤生态国家重点实验室, 中国科学院沈阳应用生态研究所, 沈阳 110164; 2中国科学院大学, 北京 100049)
  • 出版日期:2014-03-10 发布日期:2014-03-10

Niche characteristics of Pinus koraiensis population of different forest types on Changbai Mountain.

BAO Ye1,2, MENG Ying-ying1,2, ZHOU Wang-ming1, YU Da-pao1, ZHOU Li1, WEI Ya-wei1,2, FANG Xiang-min1,2, DAI Li-min1**   

  1. (1State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110164, China; 2University of Chinese Academy of Sciences, Beijing 100049, China)
  • Online:2014-03-10 Published:2014-03-10

摘要:

采用Levins、Hurlbert生态位宽度和Pianka生态位重叠计测方法,分析长白山地区不同林型红松种群生态位特征。结果表明,红松种群是长白山地区顶极群落原始阔叶红松林的优势种群,其生态位宽度呈现原始阔叶红松林>白桦林>落叶松阔叶混交林。相比于其他种群的生态位宽度,总体上原始阔叶红松林中耐阴树种的生态位宽度较大,阳性树种的生态位宽度较小,而次生林则相反。在生态位重叠方面,红松与各林型中其他种群表现出不完全重叠。在原始阔叶红松林和白桦林中,红松与其他乔木种群对资源有明显的共享趋势。红松与原始阔叶红松林的色木槭、紫椴、青楷槭、白桦,与落叶松阔叶混交林的紫椴、蒙古栎、长白落叶松,与白桦林的色木槭、白桦,对同一资源有相同或相似的要求,且当资源不足时会产生竞争。
 

关键词: 播期, 籼稻, 气温, 光辐射, 颖花分化与退化

Abstract: The niche characteristics and dynamics of Pinus koraiensis population were calculated and analyzed by methods of Levin’s niche breadth, Hurlbert niche breadth, and Pianka niche overlap in different forest types on Changbai Mountain. The results showed that P. koraiensis population was dominant in original broadleaved and Korean pine forests and the order of niche breadth in the three forest types was: primary forest (OP) > birch forest (BF) > broad leaved and larch mixed forest (MF). Compared with other populations, shadetolerant trees had a higher niche breadth than intolerant trees in OP and it was contrary in the two secondary forests. Additionally, P. koraiensis partially overlapped with other populations in all forest types, and it had an obvious trend of resource sharing with other species in OP and BF. P. koraiensis had the same or similar demands for resource with Acer mono, Tilia amurensis, Acer tegmentosum, Betula platyphylla in OP, Acer mono, B. platyphylla in BF, and Tilia amurensis, Quercus mongolica, Larix olgensis in MF, and would compete with one another under resource shortage.

Key words: sowing date, indica- rice, air temperature, solar radiation, spikelet differentiation and degeneration.