| 坝上、坝下白桦林林分结构和生长规律 |
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| 引用本文： | 王庆锁,罗菊春,张希和. 坝上、坝下白桦林林分结构和生长规律[J]. 北京林业大学学报, 2000, 22(3): 96-98 |
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| 作者姓名： | 王庆锁 罗菊春 张希和 |
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| 作者单位： | 1. 北京林业大学资源与环境学院,100083,北京
2. 河北省塞罕坝机械林场,068466,围场 |
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| 摘 要： | 河北北部坝上与坝下白桦林比较 ,无论是林分的树高、胸径、蓄积量 ,还是白桦的高生长、直径生长、材积生长 ,都是坝上小于坝下 .其主要原因是坝上属于森林 -草原交错带 ,降水量比坝下森林带少
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| 关 键 词： | 林分结构 生长过程 白桦林 河北北部 |
Stand structure and growth of Betula platyphylla forests in Bashang plateau and Baxia mountain |
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| Wang Qingsuo,Luo Juchun,Zhang Xihe. Stand structure and growth of Betula platyphylla forests in Bashang plateau and Baxia mountain[J]. Journal of Beijing Forestry University, 2000, 22(3): 96-98 |
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| Authors: | Wang Qingsuo Luo Juchun Zhang Xihe |
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| Abstract: | The tree height, diameter at breast height and growing stock of Betula platyphylla forest stand are lower in the Bashang Plateau than those in the Baxia Mountain in northern Hebei Province and eastern Inner Mongolia. The height, diameter and volume increments of Betula platyphylla are lower in the Bashang as well. This is because less precipitation is occurred in the Bashang Plateau, the forest steppe ecotone, by comparing with Baxia Mountain, the forest region. |
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| Keywords: | stand structure growth process Betula platyphylla forest northern Hebei Province |
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