搜索结果: 1-15 共查到“农学 logging”相关记录18条 . 查询时间(0.078 秒)
Impact of logging intensity on stem density, basal area and biodiversity indices five years after logging in a Caspian hardwood forest
harvesting intensity forest biodiversity northern Iran
2017/6/26
The aim of the present study was to analyse the impacts of different logging intensities after five years from logging including non-logged, low (3.4 felled stems per hectare), medium (5.2 felled stem...
Operator's physical workload in simulated logging and timber bucking by harvester
forest harvesting biofeedback ergonomics
2016/6/3
The aim is to conduct experimental measurements and analyses of physical and mental workload of harvester operators. Among other things, monitoring and analyses of work conditions and workload help re...
The occurrence of early-arriving saproxylic beetles on Scots pine logging residues generated by thinning
bark- and wood-boring beetle branch felling date pest Pinus sylvestris treetop
2015/8/27
The occurrences of early-arriving saproxylic beetles were examined on 1,200 fragments of Scots pine (Pinus sylvestris L.) logging residues generated by thinning in a single stand in the Drahanská High...
Energy yield of logging residues of the south-eastern region of the Czech Republic
wood chips renewable sources energy potential
2015/8/27
The study analyses data obtained from the production of energy chips from logging residues. Geographically, the data come from the south-eastern portion of the Czech Republic. 6,671 t of energy chips ...
Considering the soil compaction status on logging areas in a Hyrcanian forest
cutting area slope timber harvesting tree volume
2015/5/18
This paper deals with the issue of soil compaction during timber harvesting operations on cutting areas.
Soil compaction was assessed following the logging operation in Darabkola forest area by meas...
The impacts of ground-based logging equipment on forest soil
dry bulk density moisture content
2015/5/5
Soil properties can be affected by heavy equipment used for skidding but these impacts vary greatly
with site conditions and operational practices. We assessed the effects of ground-based skidding o...
Outlook of logging perspectives in the Czech Republic for the period 2013–2032
Czech forests forest management plans and guidelines grading
2015/5/5
The aim of the submitted work was to analyze the outlook of logging perspectives in the next two decades
(2013–2032) for all forests in the territory of the Czech Republic. The analyses made use of ...
Assessment of coarse woody debris following selective logging in Caspian forests: implications for conservation and management
line intersect method fixed-area plot beech forest
2015/4/24
Information on the amount, distribution, and characteristics of coarse woody debris (CWD) in forest ecosystems is highly demanded by wildlife biologists, fire specialists and ecologists. Owing to its ...
Cambioxylophagous fauna developing on logging residues of blue spruce (Picea pungens Engelmann)
cambiophages Cryphalus abietis Ips amitinus Kruš né hory Mts. Picea pungens Pityogenes chalcographus
2015/3/27
Cutting down 20- to 30-years-old trees of blue spruce (Picea pungens Engelm.) (October, May) and cross-cutting them to sections of different volume (0.5–75 dm3) under conditions of half-shade × open a...
Importance of logging technologies for economic effectiveness of tending Norway spruce stands
economic effectiveness harvesting technologies spruce stands stand tending
2015/3/27
This article examines the impact of modern harvesting and hauling technologies on the economic effectiveness of tending Norway spruce stands. The analysis of more than 70 tending treatments showed how...
Comparison of three methods to determine optimal road spacing for forwarder-type logging operations
forwarding production cost travelling model
2015/3/16
Optimum road spacing (ORS) of forwarding operation in Styria in Southern Austria is studied in this paper. In a harvesting operation it is important to compute the ORS to minimize the total cost of ha...
Logging and forest decline effects on the surface humus horizons in the Šumava Mts.
Bohemian Forest Mts. forest soils humus forms
2015/3/3
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...
Impact of skidder and high-lead system logging on forest soils and advanced regeneration
high-lead system skidder forest soil
2015/1/29
The applied skidding technology strongly influences the impact of harvest on the ecosystem and success of natural regeneration. The impact of skidder SLKT 81 and high-lead system Larix 3T on forest so...
Robust and cost-effective system for measuring and logging of data on soil water content and soil temperature profile
Data-Logger Soil Temperature Soil Water Content Microcontrollers Sensors
2013/3/4
The paper describes the system for measuring and logging of data on soil water content and soil temperature profile. The system was tested in a field and shows great potential for performing continuou...
Degradation of the soil physicochemical properties resulting from continuous logging of Gmelina arborea and Tectona grandis plantations
Deterioration level soil productivity textural properties electrical conductivity Gmelina species Tectona species
2010/9/14
This study assessed the changes in soil properties in sites subjected to continuous logging in exotics plantation sites of Gmelina arborea and Tectona grandis with the aim to evaluate the deterioratio...