Abstract:

Pinus dabeshanensis is an endangered plant species， and an endemic species of Mount Dabie Its [JP2]endangerment mechanism is complex and unclear In order to objectively understand interspecific relationship [JP]between Pinus dabeshanensis and other dominant species， a study was performed to investigate the interspecific relationship between Pinus dabeshanensis and fourteen dominant species in the community at [JP2]Tianma National Nature Reserve， Jinzhai County， Anhui Province The community with Pinus dabeshanednsis [JP]was surveyed Fifteen 20×20 m2 quadrats were set Tree species， tree height， diameter at breast height， clear bole height， crown width， coverage， number were investigated and recorded χ2test， Ochiai association index， Persons correlation coefficient and Spearmans rank correlation coefficient were used to analyze the interspecific relationship Results showed that it was higher sensitivity by Spearmans rank [JP2]correlation coefficient test than any other tests There was very significant positive interspecific relationship at 001 level between Pinus dabeshanensis and Pinus taiwanensis， Quercus glandulifera var brevipetiolata， [JP]Quercus variabilis， Rhododendron fortunei， and it was significant positive interspecific relationship at 005 level between Pinus dabeshanensis and Castanea seguinii， Acer mono There was very significant negative interspecific relationship at 001 level between Pinus dabeshanensis and Symplocos paniculata， and there was significant negative interspecific relationship at 005 level between Pinus dabeshanensis and Corylopsis sinensis， Viburnum dilatatum According to these interspecific relationships between Pinus dabeshanensis and the other fourteen species， an ecological species group was established， including Pinus dabeshanensis， Pinus taiwanensis， Quercus glandulifera var brevipetiolata， Castanea seguinii， Acer mono When protecting and managing Pinus dabeshanensis， the plant species that showed the positive interspecific relationship can be symbiosis and reciprocal to some extent Using this principle， Pinus dabeshanensis can be protected and managed Some species of non ecological species group， such as Symplocos paniculata， Corylopsis sinensis， Viburnum dilatatum should be controlled These species invaded obviously the communities which Pinus dabeshanensis was in， and interference seedlings and saplings growing of Pinus dabeshanensis Therefore， plant species of the negative interspecific relationship should be controlled as soon as possible， forest canopy of Pinus dabeshanensis can be promoted Further， population of this species can be restored