1.
The Seed Bank in Logging Gaps in Populus davidiana-Betula platyphylla Secondary Forests in Changbai Mountain
长白山杨桦次生林采伐林隙种子库特征
2.
Growth Process and Succession Trend of Polar-Birch Secondary Forests in Changbai Mountain,Northeast China
长白山杨桦次生林生长过程与演替动向分析
3.
HABITAT UNDER BIRCH-ASPEN FOREST AND NATURAL RECRUITMENT OF KOREAN PINE
杨桦林下的生境条件与红松天然更新的研究
4.
Study on Precipitation Hydro-chemical Characteristic of Different Stages of Betula platyphylla Secondary Forest
不同林龄白桦次生林降雨水化学特征研究
5.
Pattern analysis of different populations in natural secondary forest of Betula davurica in mountainous area of Beijing
北京山区黑桦天然次生林不同种群的格局分析
6.
Effect of Soil Properties in The Natural Secondary Forest by Planting Conifer and Reserving Broad-leave
栽针保阔对天然次生白桦林土壤养分的影响
7.
Soil CO_2 released effluxes of Birch forest in the Changbai Mouhtains
长白山天然次生白桦林土壤CO_2释放通量研究
8.
Comparison of Biomass of Betula alnoides Plantations and Natural Secondary Forests in Xishuangbanna
2种西南桦人工林与同地2种天然次生林的林分生物量对比研究
9.
Soil properties and water conservation function of Betula platyphylla secondary forest with different stand ages
不同林龄白桦次生林土壤特性及其水源涵养功能
10.
Spatial Pattern Analysis in a Natural Secondary Betula-Abies Forest at Sub-Alpine Area of Western Sichuan, China
川西亚高山红桦—岷江冷杉天然次生林的空间格局分析
11.
Primary Study on the Major Community Types of Betula luminifera Secondary Forests in Northwest Guizhou
黔西北地区光皮桦次生林主要群落类型初步研究
12.
Results of this study provide a theoretical basis for the oriented cultivation of poplar-birch natural forests.
这为杨桦林的分类定向培育提供了理论的依据。
13.
Study on Intraspecific and Interspecific Competition of the Populus davidiana Secondary Forest in Mao'ershan Mountains Area
帽儿山地区山杨次生林林木竞争关系的研究
14.
Study on Interspecific Competition Among Dominant Tree Species in Alniphyllum fortunei Secondary Forest in the Meihuashan Nature Reserve
梅花山拟赤杨次生林优势树种种间竞争研究
15.
medium-sized birch of eastern North America having white or pale gray bark and valueless wood; occurs often as a second-browth forest tree.
北美东部的一种中等大小的桦树,具有灰色或白色树皮,木材无价值；次生林中常见。
16.
Native Auxiliary Species of Mixed Broadleaf-Korean Pine Stands--Populus ussuriensis Kom.
阔叶红松林的伴生乡土杨树——大青杨
17.
Study on Growth Models with Artificial Neural Network for Betula Platyphlla Plantation
白桦人工林生长的人工神经网络模型研究
18.
An Analysis of the Growth Effect of Young Betula luminifera Plantation under Different Site Conditions
光皮桦人工幼林不同立地条件生长效应分析