| 太白山红桦林的初步研究 |
| |
| 引用本文： | 傅志军,郭俊理.太白山红桦林的初步研究[J].植物生态学报,1994,18(3):261-270. |
| |
| 作者姓名： | 傅志军 郭俊理 |
| |
| 作者单位： | 宝鸡师范学院地理系 |
| |
| 摘 要： | 红桦(Betula albo-sinensis)林是太白山森林植被的重要类型，在山地植被垂直带谱中成为落叶阔叶林带的一个亚带，南坡分布于海拔1950—2650m，北坡分布于海拔2200—2750m。 太白山红桦林可分为7个类型： Ⅰ红桦+辽东栎林，Ⅱ红桦+辽东栎+华山松林，Ⅲ红桦 +华山松林，Ⅳ红桦纯林，Ⅴ红桦+华山松+牛皮桦林，Ⅵ红桦+牛皮桦+巴山冷杉林，Ⅶ红桦 +牛皮桦林。随着海拔高度的升高，红桦林各类型依次有规律的分布，但红桦始终占据优势地位，并有着相对稳定的结构组成。红桦林以高大粗壮的红桦个体为主，林内更新苗较少，天然更新状况普遍不良。优势种群(红桦)年龄分析表明，红桦种群为衰退种群。红桦种群的衰退特征反映出红桦林的消退发展趋势。 目前本区红桦林多属成熟林或过熟林，应加强人工更新。
|
| 关 键 词： | 太白山 红桦林 种群 |
PRELIMINARY STUDIES OF BETULA ALBO-SINENSIS FOREST IN TAIBAI MOUNTAIN |
| |
| Fu Zhi-jun,Gao Jun-li.PRELIMINARY STUDIES OF BETULA ALBO-SINENSIS FOREST IN TAIBAI MOUNTAIN[J].Acta Phytoecologica Sinica,1994,18(3):261-270. |
| |
| Authors: | Fu Zhi-jun Gao Jun-li |
| |
| Abstract: | Betula albo-sinensis forest is an important type of forest vegetation of the Taibai Mountain region, distributed From 1950 to 2650m on the south slope and from 2200 to 2750m above sea level on the north slope.Using clustering analysis(UPGMA),twenty plots of Betula albo-sinensis forest were classified into seven types:i) B. albo-sinensi Quercus liaotung-ensis forest; ii) B. albo-sinensis Q.liaotungensis Pinus armandii forest;iii)B. albo-sinensis P. armandii forest; iv) B. albo-sincensis forest;v)B. albo-sinensis P armandii B. utilis fargesis forest;vi) B. albo-sinensis B. utilis Abies jargesii forest;vii) B albo- sinensis B. utilis forest.Seven types of B,albo- sinensis forests were regularly distributed in this order along the altitudinalgradient, but B. albo-sinensis forest always dominates and the forest structureis relatively stable.The analysis of the Bctula albo-sinensis population structure,dynamicsand natural regeneration indicated the Betula albo-sincntis forest was in a de-grading stage.Betula albo-sinensis forests are mature or over-mature at present,artificialregeneration should be strengthened. |
| |
| Keywords: | Taibai Mountain Betula albo-sincnsis forest Population |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《植物生态学报》浏览原始摘要信息 |
|
点击此处可从《植物生态学报》下载免费的PDF全文 |
|
