Effects of elevated CO_2 concentration and temperature on root structure of subalpine Betula albo-sinensis seedlings in western Sichuan,southwestern China;
CO_2浓度和温度升高对川西亚高山红桦幼苗根系结构的影响
Effects of elevated CO_2 concentration and temperature on nutrient accumulation and allocation in Betula albo-sinensis seedlings;
大气二氧化碳浓度与温度升高对红桦幼苗养分积累和分配的影响
Responses of subalpine Betula albo-sinensis soil invertase activity to elevated atmospheric temperature and CO_2 concentration in Western Sichuan;
川西亚高山红桦幼苗土壤蔗糖酶活性对温度和大气二氧化碳浓度升高的响应
Effects of elevated atmospheric CO_2 concentration on Betula albosinensis seedling roots;
大气CO_2浓度升高对红桦幼苗根系的影响
Effects of elevated CO_2 on the growth and nutrient contents of Betula albosinensis seedlings with two planting densities;
CO_2浓度升高对两个种植密度下红桦生长和养分含量的影响
Traits of photosynthesis and chlorophyll fluorescence of red birch seedlings(Betula albosinensis)were investigated under a 30±2.
为了研究弱光环境对林下红桦幼苗光合生理的影响,进行了30±2。
The T-square study of Betula albo-sinensis population on the west slope of Jiuding Mountain showed that the population was mainly in random distribution, and in aggregated distribution in a few lines because of the negative human activities and severe destructions.
用T square距离方法 ,通过空间格局的T形指数C及其检验值Z1,对九顶山西坡红桦种群中选取的 3块样地 6条样线进行了研究 。
Effects of Elevated CO_2 Concentration on Physiological Characteristics and Growth of Birch (Betula Albosinensis Burk.) Seedlings;
CO_2浓度升高对红桦幼苗生理与生长的影响
Study on Gap Characteristics and Stability of Betula Albo-sinensis Forest in Taibai Mountains;
太白山红桦林林隙特征及其稳定性的研究
Study on Natural Regeneration and Seed Germination Characteristics of Betula Albo-sinensis at MT.Taibai, China;
太白山红桦林自然更新障碍及种子萌发生理的研究
Effects of Elevated CO_2 Concentration on Contents and Allocation of Carbohydrates in Betula Albosinensis (Burk.) Seedlings;
大气CO_2浓度升高对红桦碳水化合物含量和分配的影响
Photosynthetic Responses of Butula Albosinesis to Elevated Atmospheric CO_2 Concentation and Temperature in Subalpine of the Western Sichuan;
川西亚高山红桦光合作用对大气CO_2浓度和温度升高的响应
Effects of Elevated Atmospheric CO_2 Concentration and Temperature on Soluble Protein Content and Allocation of Betula Albo-sinensis Seedlings;
Co_2浓度和温度升高对红桦可溶性蛋白含量和分配的影响
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
The water-holding capacity of litter layers in the forests of Larix principis-rupprechtii and Betula albo-sinensis in Liupan Mountain and their rainfall interception process
六盘山华北落叶松林和红桦林枯落物持水特征及其截持降雨过程
Spatial patterns of dominant tree species in sub-alpine Betula-Abies forest in West Sichuan of China
川西亚高山红桦-岷江冷杉林优势种群的空间格局分析
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
Grevillea banksii′s purification ability to SO_2 and fluoride in atmosphere
红花银桦对大气SO_2和氟化物的净化能力
Preliminary study of the tolerance of Grevillea banksii to air fluoride and sulfur pollution
红花银桦对大气氟、硫污染的抗性影响探讨
birch of swamps and river bottoms throughout the eastern United States having reddish-brown bark.
遍及美国东部的一种桦树,生长在沼泽和河谷,具红褐色树皮。
"The hardwoods are trees with broad leaves. Oak, beech, birch, sycamore, maple, mahogany, and teak are all hardwoods. "
硬木材是阔叶树。橡、山毛榉、桦、美国梧桐、槭、红木、柚木全都属于硬木。
Adaptive Response of Betula alnoides, Pinus kesiya and Sequoia sempervirens Seedlings to N and P Nutrients;
西南桦、思茅松和北美红杉幼苗对N、P养分的适应机制
Serviceability Evaluation of Butula Alnoides and Castanopsis Hystrix Plantation Wood Applied in Furniture and Decorative Utilization;
西南桦、红椎人工林木材应用于家具与装饰材的适应性评价
a genus of trees of the family Betulaceae (such as birches).
桦木科的一个乔木属（例如桦树）。
To whip with or as if with a birch.
桦条，作鞭打用用或似用桦条鞭打