农学 >>> 林学 >>> 林业基础学科 林木遗传育种学 森林培育学 森林经理学 森林保护学 野生动物保护与管理 防护林学 经济林学 园林学 森林统计学 林业经济学 林学其他学科
搜索结果: 1-9 共查到林学 humus相关记录9条 . 查询时间(0.049 秒)
A pedological survey was carried out in a spruce monoculture, beech stand, and in a mixed stand at a field research station in R醞ec-N靘鑙ce of the Institute of Forest Ecology (IFE), Mendel University of...
In 1997, long-term thinning experiment V歟te?in Southern Bohemia was established in the young 19-year-old mixed beech and spruce stand. Three variants (0.10 ha each) were investigated: 1 ?control unthi...
The main reason for the transformation of spruce monocultures at sites of mixed broadleaved forests is to create more natural relationships between the species structure of a stand and soil processes....
The afforestation of agricultural lands was carried out under different site and ecological conditions, including lower and medium elevated localities. The present study documents the rapidity of accu...
The paper presented evaluates reserves and chemical composition of forest floor of three stands of Douglas fir, spruce and spruce with beech at acid sites (3K) in the H鵵ky Training Forest District (TF...
The article presents original results of research on the humus form dynamics in a semi-natural European beech stand in the National Natural Reserve Voděradské bučiny, in the area of Training Fo...
Holorganic layers belong among the key ecosystem components of forest soils at higher altitudes. Increased biological activity of the surface humus is very often observed after forest decline and/or f...
The paper documents the effects of forest stands of different species composition on the humus form state and soil profile chemistry. It compares the situation in mixed broadleaved (ash, oak, hornbeam...
Humus forms dynamics and characteristics of different forest sites were studied in the area of Smrčina Mt. in the Šumava National Park territory. The study was performed in vital Norway spru...

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...