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: 1-15 共查到林学 the protection相关记录15条 . 查询时间(0.155 秒)
For more than four centuries, the Tatra Mountains were affected by many factors, such as forest and pastoral management, mining and metallurgy, windthrows, snow avalanches, and bark beetle outbreaks. ...
The protection forest system for Taipei City, the capital of Taiwan, was established in 1907. The social and natural environment had changed drastically in the past few decades, however, the maps an...
At present, the coppice-with-standards system has become so rare in floodplain forests that it is considered a natural monument. In 1990, the coppice-with-standards system was not recorded in the terr...
Geostatistical analysis of bark beetle activity and its use for the improvement of pest control measures are presented. Data on the volume of salvage timber felling due to bark beetle infestation for ...
By means of computer-based image analysis it was possible to accelerate and automate a number of originally time-consuming activities in plant pathology and forest protection. In 1997–2005, image an...
About 15% of the area of the Czech Republic is classified as territories with special status of protection, most of which is covered with forests. At present, at the time of integration of the country...
Ecology of capercaillie (Tetrao urogallus) was studied in the mountains of Central Slovakia (West Carpathians) in 1981–2003. In the studied area, the capercaillie population inhabited especially old n...
The aims of this study were: 1. to determine the effect of dexiccation treatment on the physiological quality of Norway spruce (Picea abies [L.] Karst.) seedlings by measurements of electrolyte leakag...
In order to assess the efficacy of the three most common types of agricultural land conservation in the United States, this study analyzes the spatial and visual quality of a purchase of development r...
In order to assess the efficacy of the three most common types of agricultural land conservation in the United States, this study analyzes the spatial and visual quality of a purchase of development r...
Protection of forest resources is one of the preconditions of receiving sustainable benefit from these resources, particularly in countries where forests are state-protected. For the purpose of ensuri...
Forest resources, due to their basic requirements and structure, have features that affect human life directly. Preserving the forest resources is becoming an extremely difficult task due to changing ...
Beech trees often dominate the natural forests in northeast part of Japan. This is partly attributable to heavy snow environment in these districts. Deep snow cover during winter season may contribute...
Effectiveness of a dog (Canis lupus familiaris) for protecting citrus fruits from bird damage was investigated using a citrus orchard (5.8a in area) in the harvest season. In Exp. 1, a Border collie s...
Washington Forest Protection Association (WFPA) is a trade association representing private forest landowners in Washington State. Our members are large and small companies, individuals and families w...

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...