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。
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 high- er niche breadth than intolerant trees in 0P and it was contrary in the two secondary forests. Ad- ditionally, 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.
出处
《生态学杂志》
CAS
CSCD
北大核心
2014年第3期555-559,共5页
Chinese Journal of Ecology
基金
国家科技支撑计划项目(2012BAD22B04)
森林与土壤生态国家重点实验室自主重大项目(LESE2013-12)资助
关键词
阔叶红松林
生态位宽度
生态位重叠
长白山
broad-leaved and Korean pine forest
niche breadth
niche overlap
Changbai Mountain.
