Undergrowth

About: Undergrowth is a research topic. Over the lifetime, 795 publications have been published within this topic receiving 11911 citations. The topic is also known as: understorey & underbrush.

Совершенствование технологического оборудования для пересадки подроста с закрытой корневой системой

Abstract: The paper suggests variants of replaceable and multioperational process equipment for complex reforestation with mechanical undergrowth replanting in forest compartment. The author analyzed the existing methods and designs of machines and mechanisms for undergrowth replanting. Methods of patent search and experimental data analysis were used in this research. Expediency of undergrowth replanting and its high survival rate are confirmed by numerous researchers. Replanting of containerized undergrowth is more efficient than that of bare-root undergrowth. The presented technology of undergrowth replanting involves using a universal machine for all operations of this process. Undergrowth is dug out in the cutting area where logging has not yet been started and is likely to damage the undergrowth. The undergrowth is then transported and planted in another cutting area where it is scarce and where logging has already been done. Its establishment, genetic value and resistance to pests and diseases are much higher than those of nursery crops. In addition, this method gives an opportunity to form unevenly aged stands. The technological equipment has proven its efficiency in operating conditions. A machine with this type of digging device will allow one to dig out the undergrowth without breaking its lump of soil and plant it in the cutting area. Theoretical and experimental studies on the integrated development of a forest compartment proved this area of engineering and technology to be promising. Part of the research has already been introduced in production after industrial testing of the technology of integrated development of forest areas using logging equipment for undergrowth replanting (in the training and experimental forestry of the Volga State University of Technology). The results can be used for further development of forest areas.

Method to detect height of rock-ice avalanche in valley

Abstract: FIELD: measurement equipmentSUBSTANCE: method includes detection of a phytoindicator At the same time they determine upper border of newly formed spread undergrowth of willow Salix spp With the help of an altimeter, they measure height of the upper border of willow undergrowth above sea level They measure valley thalweg height above sea level before the catastrophe By difference of these values they determine height of rock-ice avalanche after stop of the avalanche-like flowEFFECT: method makes it possible to increase efficiency of assessment of hazardous natural phenomena2 dwg, 1 ex

Method of inhibiting plant from poor germination and undergrowth

Abstract: PROBLEM TO BE SOLVED: To provide a method of inhibiting poor germination and undergrowth of plants by attaining easy and exact dissemination even in the case that the seed size is small. SOLUTION: The plant seeds are enclosed in water-based gel capsules and refrigerated under the conditions in which no seed germinates, and then the seed are sowed whereby poor germination and undergrowth of the plant can be inhibited.

Research on Biomass and Undergrowth Soil Nutrient of Main Tree Species for Shelterbelt along Fujian Coastal Area

Abstract: Shelterbelt plays an important role in improving the environmentThe research on biomass,litter fall and forest soil nutrient could deepen the understanding of the tree growth laws and the interrelationship between the tree and the environmentThe average sample tree method was adopted to determine the biomass of main tree species for shelterbelt in Haitan Island,namely Casuarina equisetifolia L,Acacia confusa Merr,Pinus thunbergii Parlatore and Pinus elliottii EngelmannThe growth habit and the abundance and deficiency of nutrients among the four species were analyzed through the litter collecting and soil nutrient measurementThe results indicated that: ① The order of the total biomass from large to small was Pinus elliotii Engelmann(27084 t/hm2)Pinus thunbergii Parlatore(12572 t/hm2)Acacia confusa Merr(7599 t/hm2) Casuarina equisetifolia L with bad slash regeneration(5602 t/hm2)② From the study of litter,it could be concluded that September was the common growth month and the litter production was large,but for Casuarina equisetifolia L and Acacia confusa Merr,another peak of litter return was in May③ According to the soil nutrient of the four species,the undergrowth soil nutrient of Acacia confusa Merr was relatively abundant,but nutrient substances of the four tree species were comparatively poor on the wholeThis might influence the biomass of shelterbelt and then affect the function of the windbreak and sand fixation and also the soil and water conservation