农学 >>> 农学总论 作物学 园艺学 土壤学 植物保护学 农药学 林学 畜牧学 兽医学 水产学
搜索结果: 1-6 共查到农学 Abies sachalinensis相关记录6条 . 查询时间(0.218 秒)
Urban tree growth is often affected by reduced water availability, higher temperatures, small and compacted planting pits, as well as high nutrient and pollution inputs. Despite these hindering growth...
To examine the conversion of conifer plantations to mixed forests comprising coniferous and broad-leaved trees, we investigated responses of understory vegetation to variable-intensity thinning in 39-...
The understory biomass (height<3 m; tree, vine and herbaceous species) in 21 plantation stands of Abies sachalinensis was investigated to understand how that biomass changes with forest age and with e...
We examined how site conditions in selection cutting stands of natural forests relate to the regenerate distribution of Abies sachalinensis, which is a main species of mixed conifer-broadleaved forest...
For improving the wood properties of Sakhalin fir (Abies sachalinensis) variation in annual ring structure and genetic variation in different environments were examined by X-ray densitometry. The spec...
To determine the invasion and growth processes of natural broadleaved trees in a conifer plantation, and to examine the influence of forest operations on these processes, we investigated the species c...

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...