By using the methods of typical quadrat,the structure characteristics and distribution pattern of Castanopsis eyrei populations of secondary forest through age stucture,lifetable characteristics,survival curves and 4 aggregation intensity index (distribution coefficient R,negative binomial parameter K,mean crowding index M* and accumulation index PAI) were studied in the National Forest Park of Yangmingshan,Hunan.The results showed that:1)the age structure of the C.eyrei population of the Yangmingshan followed a spindle shape,which indicated that the population was declining;2)In general,the survival rate of C.eyrei population increased first and then decreased with the increase of age,the survivorship approximated the type of the DeeveyI.3)In the study plots,the distribution pattern of C.eyrei population showed cluster distribution which coincides with the most common pattern of population.The population structure and distribution pattern were closely related to ecological factors and biological characteristics,natural disturbance and human destruction also had certain effect.The research results can provide a theoretical basis for natural regeneration and conservation of dominant population of Yangmingshan secondary C.eyrei forest.
YAN Yujuan
,
XIE Hongmei
,
CHEN Xingke
,
ZENG Leyuan
,
WANG Juhong
. Population Structure and Distribution Pattern of Secondary Castanopsis eyrei Forest in Yangmingshan,Hunan Province[J]. Forest and Grassland Resources Research, 2016
, 0(3)
: 61
-66
.
DOI: 10.13466/j.cnki.lyzygl.2016.03.012
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