Effects of different disturbance ways on the diversity of pine forest invaded by pine wood nematode (Bursaphelenchus xylophilus)
SHI Juan1, LUO You-qing1, YAN Xiao-su2, CHEN Wei-ping2, JIANG Ping2
1. The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing 100083, China; 2. Forest Pest Control & Quarantine Station of Zhejiang Province, Hangzhou 310002, China
Through field investigations it was observed that after Bursaphelenchus xylophilus (Steiner and Buhren) Nickle (pine wood nematode) invaded a pine forest, subsequently formed forest types would be significantly different from each other if two managing ways such as human removal and reserving damaged trees were taken before a natural regeneration, namely different disturbance measures taken for damaged trees would affect regeneration direction of understory vegetation of an infected pine forest. Based on the above observation, the dynamics of plant diversity under different managements of damaged trees were studied by choosing two Masson pine communities that were subjected to managements of removal and reserving damaged trees, respectively, after the invasion of pine wood nematode. α diversity index function-Rényi index was used as a measurement. The results showed that the species diversity of shrub and herb layers of the pine forest in which damaged trees were removed timely was higher than that in which damaged trees were reserved.
石娟1, 骆有庆1*, 严晓素2, 陈卫平2, 蒋平2. 不同干扰措施对松材线虫入侵松林内物种多样性的影响[J]. , 2007, 26(4): 289-292.
SHI Juan1, LUO You-qing1, YAN Xiao-su2, CHEN Wei-ping2, JIANG Ping2. Effects of different disturbance ways on the diversity of pine forest invaded by pine wood nematode (Bursaphelenchus xylophilus). , 2007, 26(4): 289-292.
[7] Patil G P,Taillie C.1977.Diversity as a concept and its implications for random communities[J].Bull.Int.Stat.Inst.,47:497-515.
[8] Patil G P,Taillie C.1979.An overview of diversity[A].In:Grassle J F,Patil G P,Smith W,Taillie C (ed).Ecological Diversity in Theory and Practice[C].Fairland,MD:International Cooperative Publishiing House.3-27.
[9] Patil G P,Taillie C.1982.Diversity as a concept and its measurement[J].J.Am.Sta.Ass.,77:548-567.
[10] Tóthmérész B.1993.DIVORD 1.50:a program for diversity ordering[J].Tiscia,27:33-44.
[11] Tóthmérész B.1995.Comparison of different methods for diversity ordering[J].J Veg Sci,6:283-290.
[12] Tóthmérész B.1994.Div Ord 1.60:Diversity ordering:finite and infinite samples[J].Tiscia,28:63-65.