农学 >>> 林学 >>> 林业基础学科 >>> 森林气象学 森林地理学 森林水文学 森林土壤学 树木生理学 森林生态学 森林植物学 林业基础学科其他学科
搜索结果: 1-3 共查到林业基础学科 Sapwood相关记录3条 . 查询时间(0.055 秒)
The study was an attempt to determine the dynamics of heartwood formation and the radial and axial distribution of sapwood and heartwood in stems of European larch (Larix deciduas Mill.) representing ...
The paper deals with the determination of the number of sapwood annual rings in oak (Quercus sp.) in relation to altitude, locality and stand age. Several different groups of samples were used...
In this study, sapwood and heartwood samples obtained from Oriental spruce growing naturally only in East Black Sea region were investigated. Trees of 36-44 cm diameter were obtained from the Karahav...

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...