生态学杂志2018，Vol.37Issue(4)：1003-1009,7.DOI:10.13292/j.1000-4890.201804.024
北京松山油松林林分结构和地形对幼苗更新的影响
Effects of stand structure and terrain factors on seedling regeneration of Pinus tabuliformis forest in the Songshan National Nature Reserve, Beijing
摘要
Abstract
To investigate the natural regeneration of Pinus tabuliformis,thirty-two plots were selected in P.tabuliformis forests in Songshan National Nature Reserve.The effects of terrain factors (altitude,slope,aspect,and slope position) and forest stand structural indicators (crown index,proportion of large trees,stand density,shrub coverage and herb coverage) on the natural regeneration of P.tabuliformis were examined.The results showed that the regeneration density of P.tabuliformis was significantly negatively correlated with altitude.The regeneration density of seedlings at different slope positions followed the pattern:bottom slope ＞ middle slope ＞ upper slope.The regeneration density of P.tabuliformis was negatively correlated with the magnitude of slope.The relationship between the regeneration density and the proportion of large trees could be explained by a parabolic model.The regeneration density was the lowest when the proportion of large trees reached about 50％.Furthermore,the regeneration of seedlings was positively correlated with stand density and herb coverage.关键词
幼苗更新/地形因子/垂直结构/密度因素Key words
seedling regeneration/terrain factor/vertical structure/density factor引用本文复制引用
黄萍,刘艳红..北京松山油松林林分结构和地形对幼苗更新的影响[J].生态学杂志,2018,37(4):1003-1009,7.基金项目
北京市重点学科项目“生态学”(2013-2014)资助. （2013-2014）
