CAJ | 학술논문

本研究首先运用TWINSPAN把云顶山亚高山草甸36个样方分为5个群落类型,作为5个综合资源位.采用Levins、Shannon-Wiener生态位宽度指数和Petraitis生态位重叠指数,对云顶山亚高山草甸优势种群的生态位宽度和生态位重叠进行了研究.结果表明,10个优势种群中嵩草的生态位最宽, Levins生态位宽度和Shannon-Wiener生态位宽度分别为8.78和31.58,对环境有广泛的适应性.云顶山亚高山草甸不同群落类型内种群生态位宽度越大,对环境的适应能力越强,对资源的利用能力也越强;生态位重叠越大,种群间的生态相似性越大,利用资源的相似性程度越高.嵩草+蒲公英群落中优势种群生态位普遍重叠值最高,为0.914,各物种有较强的利用资源的共性.
본연구수선운용TWINSPAN파운정산아고산초전36개양방분위5개군락류형,작위5개종합자원위.채용Levins、Shannon-Wiener생태위관도지수화Petraitis생태위중첩지수,대운정산아고산초전우세충군적생태위관도화생태위중첩진행료연구.결과표명,10개우세충군중숭초적생태위최관, Levins생태위관도화Shannon-Wiener생태위관도분별위8.78화31.58,대배경유엄범적괄응성.운정산아고산초전불동군락류형내충군생태위관도월대,대배경적괄응능력월강,대자원적이용능력야월강;생태위중첩월대,충군간적생태상사성월대,이용자원적상사성정도월고.숭초+포공영군락중우세충군생태위보편중첩치최고,위0.914,각물충유교강적이용자원적공성.
TWINSPAN was used to divide 36 quadrates of subalpine meadow in the Yinding Mountain into five types of communities as five resource states. Niche breadths and niche overlaps of dominant species of the subalpine meadow were measured and analyzed using the indexes proposed by Levins, Shannon-Wiener, and Petraits. Niche breadth of Kobresia bellardii was the biggest among the ten dominant species with a Levins niche breadth of 8.78 and Shannon-Wiener niche breadth of 31.58. The species had extensive adaptation to the environment. The bigger the species' niche breadths in the subalpine meadow, the more extensive were their adaptation to the environment and the stronger their capabilities of using resources. The greater were the species' niche overlaps, the greater were the ecological similarities between species and their resources-use. The niche overlaps of the dominant species in K. bellardii and Taraxacum mongolicum communities were the biggest (0.914), and the two species had common characteristics of resource use.