黄土高原天然柴松纯林不同坡位幼苗更新特性研究  

Studies on the Seedlings Regeneration of Pinus Tabulaeformis f.shekannesis in Different Slopes on Loess Plateau

作　　者：崔长美[1] 王孝安[1] 郭华[1] 李伟 

机构地区：[1]陕西师范大学生命科学学院,西安710062 [2]武警内蒙总队二支队,兴安盟内蒙137611

出　　处：《中国农学通报》2011年第4期48-52,共5页Chinese Agricultural Science Bulletin

基　　金：国家重点基础研究与发展规划资助项目"973"项目(2002CB111505)

摘　　要：为了探讨纯林柴松(Pinus tabulaeformisf.shekannesis)种群不同坡位幼苗的大小结构及其更新特点,通过对陕西富县大麦秸沟地区柴松群落的调查,采用样方法研究黄土高原子午岭天然柴松纯林内天然更新的变化规律。结果表明,柴松纯林幼苗的天然更新特点与坡位有极大关系。从幼苗数量来看,上坡位与中坡位相差不大,却远大于下坡位。对于幼苗的高度3个坡位差异不显著,且都与平均高度无明显差异。从幼苗的密度来看,上坡位与中坡位差异不大,且和平均密度差异不显著,而下坡位的幼苗密度远低于上中坡位,且远小于平均密度。因此,建议在柴松纯林保护和恢复过程中,一定要注意对不同的坡位采用不同的抚育措施。To discuss the regeneration characteristic and size structure of seedlings in different slopes,natural regeneration of Pinus tabulaeformis f.shekannesis in the pure forest in Ziwuling on loess plateau was studied by means of sample plots.The results indicated that the natural regeneration of P.tabulaeformis f.shekannesis seedlings was closely related to the slope positions.The P.tabulaeformis f.shekannesis seedlings in the up-slope and mid-slope were similar in number and density,while in the low-slope the number and densityw ere much lower.The height of P.tabulaeformis f.shekannesis seedlings in different slopes varied little and was consistent with the average height.In conclusion,the author suggested that during the protection and recovering of the P.tabulaeformis f.shekannesis forest,different cultural measures should be taken in differents lopes.

关 键 词：柴松纯林 坡位 幼苗更新 黄土高原 

分 类 号：Q948.15[生物学—植物学]