林业科学2012，Vol.48Issue(6)：147-151,5.
燕山山地油松人工林林隙大小对更新的影响
Effects of Gap Size on Regeneration of Pinus tabulaeformis Plantation in the Yanshan Mountain
摘要
Abstract
Forest gaps play an important role in the forest structure change, succession and species diversity. Moreover, the gap size directly affects the forest regeneration. In this study, the gap size and regeneration of Pinus tabulaeformis plantation in the Yanshan Mountain were investigated by the line transects method to analyze the effects of gap size on the regeneration dynamics, and on the density of regeneration seedling and grass diversity. The results showed that there were many medium and small itaps in the near-mature P. tabulaeformis plantation, but rare large gaps. The gaps were basically filled with the regenerated P. tubulaeformit seedlings. In the gaps of 20 - 100 m2 size there was the earliest forest renewal, and the 10 - 15-year-old seedlings accounted for more than 80% of the total regenerated seedlings. The gaps of 20 - 40 m size had obviously higher renewal density than the others, but the height of regenerated saplings was generally shorter than that in the smaller gaps. Species diversity and richness indices of herbaceous showed hump-shaped curves with increasing gap size, and the niaxes of both indices appeared in 60 -80 m gaps.关键词
燕山山地/油松人工林/林隙/更新Key words
Yanshan mountain/ Pinus tabulaeformis plantation/ gap/ regeneration分类
农业科技引用本文复制引用
李兵兵,秦琰,刘亚茜,刘相兵,黄选瑞..燕山山地油松人工林林隙大小对更新的影响[J].林业科学,2012,48(6):147-151,5.基金项目
国家公益专项(201004002205 （）
200804027). （）
