北京西山地区人工侧柏林种子雨的研究  

Seed rain of oriental arborvitae (Platycladus orientalis) plantation in Beij

作　　者：查同刚[1] 孙向阳[1] 王登芝[1] 阎海平 

机构地区：[1]北京林业大学资源与环境学院 [2]北京市西山试验林场

出　　处：《北京林业大学学报》2003年第1期28-31,共4页Journal of Beijing Forestry University

基　　金：北京市自然科学基金"北京西山地区森林植被恢复机理的研究"资助项目 (8982 0 10 )

摘　　要：在 2 0 0 0年 9月至 11月 ,对北京西山地区人工侧柏林种子雨进行了系统研究 .结果表明 :种子雨历时 4 6d ,总雨量 2 13粒 /m2 ,输入种子库雨量 18粒 /m2 ,最大雨强每天 15～ 2 0粒 /m2 .根据种子雨雨量、雨强及影响因素的差异 ,种子雨过程可分为起始、高峰和末期三个时期 .林内种子雨分布比较均匀 ,林缘种子雨随距离增大迅速降低 ,重力和风力是影响种子雨散布的主要因素 .According to the investigation on the oriental arborvitae plantation in Beijing West Mountain area in 2000, the characteristics of the seed rain are as follows: the total rainfall is 213 individuals per m 2 while the inputting amount of the seed bank is 18 individuals per m 2, and the biggest daily intensity of seed rain is about 15～20 individuals per m 2. On the basis of the difference of seed intensity, rainfall and influencing factors, the process of seed rain could be divided into three periods: beginning, peak\|hour and terminal. The distribution of seed rain is evenly in the inner forest while decreases sharply with the length to the parent trees on the purlieus, and it is influenced mostly by gravity and wind force.

关 键 词：侧柏 人工林 种子雨 土壤种子库 散布特征 

分 类 号：S791.38[农业科学—林木遗传育种]