搜索结果: 1-12 共查到“林业测量学 forest”相关记录12条 . 查询时间(0.326 秒)
Calculating the correction factor of skidding distance based on forest road network
real skidding distance theoretical skidding distance correction factor Chafrood forest
2015/3/27
Average skidding distance for forest stands is an important parameter for the determination of the optimum road density and spacing. In this research the real mean skidding distance and theoretical me...
Phenology of four broad-leaved forest trees in a submountain beech forest
submountain beech forest phenology vegetative phenological phases
2015/3/17
The phenology of four deciduous forest tree species (Carpinus betulus L., Fagus sylvatica L., Quercus dalechampii Ten., Tilia cordata Mill.) was studied in a submountain beech forest stand in Central ...
Photosynthetic response to different light intensities and water status of two main Nothofagus species of southern Patagonian forest, Argentina
Nothofagus shade photosynthesis
2015/3/16
Net photosynthetic rate (A) and stomatal conductance (gs) of leaves of Nothofagus pumilio and N. an-tarctica seedlings were measured at different photosynthetic photon flux densities (PPFDs, 20, 150, ...
Regeneration and game damage in the Kru歯?hory Mts. assessed on the basis of National Forest Inventory of the Czech Republic
National Forest Inventory game damage Kru歯 ?hory Mts.
2015/3/16
In 2001?004 National Forest Inventory was realized in the Czech Republic. A great number of variables was measured giving rise to an extensive information database that can be used to assess the state...
Quantification of nutrient content in the aboveground biomass of teak plantation in a tropical dry deciduous forest of Udaipur, India
dry matter aboveground biomass nutrient concentration
2015/3/16
This study was designed to evaluate the quantification of the nutrient content of aboveground biomass of teak plantation in a tropical dry deciduous forest of Udaipur, Rajasthan, India. The nutrient c...
Changes of the mixed mountain virgin forest after 70 years on a permanent plot in the Ukrainian Carpathians 567
permanent plot virgin forest stand dynamics
2015/3/16
During 2004?006, another permanent research plot (No. 12) on Pop Ivan Marmarosh Mt. in the Zakarpattya province of Ukraine was renewed, i.e. re-measured and re-analyzed. The plot was originally establ...
About the benefits of poststratification in forest inventories
poststratification systematic sampling simple random sampling
2015/3/6
A large virtual population is created based on the GIS data base of a forest district and inventory data. It serves as a population where large scale inventories with systematic and simple random post...
Estimation of Root Biomass and Root Surface Area in a Broad-leaved Secondary Forest in the Southern Part of Kyoto Prefecture
allometric relationships broad-leaved secondary forest root biomass root diameter root surface area
2009/8/27
Root biomass and surface area were estimated using two methods in a broad-leaved secondary forest in southern part of Kyoto Prefecture. Root systems (n=6) were dug out as samples. Dry weights and diam...
Long-range Estimation of Standing Timber Stock in Western Boreal Forest of Canada Using Airborne Laser Altimetry
airborne laser altimetry boreal forest forest biomass forest volume vegetation profile
2009/8/27
A continuous vegetation profile covering a 600 km transect set up N-S across the boreal forest region of western Canada was obtained by airborne laser altimetry, along with ground-truth measurements o...
Long-range Estimation of Leaf Area Index Using Airborne Laser Altimetry in Siberian Boreal Forest
airborne laser altimetry leaf area index long-range estimation permafrost Siberian boreal forest
2009/8/27
Being the most extensively forested region of the world, the carbon budget of the Siberian boreal forest is one of the important subjects of global concern. This study was conducted to quantify leaf a...
Contemporary Role of Catchment Water Balance Data for Forest Evapotranspiration Research
catchment water balance evapotranspiration flux measurements sap flux measurements water cycle water yield
2009/8/27
Recently, catchment water balance measurements have not been used actively for examining forest evapotranspiration compared to process-based measurements based on meteorological and sap-flow methods. ...
Estimation of Forest Resource Conditions in Larix kaempferi Stand Combining High Resolution Digital Aerial Photography and DTM by LiDAR Data
digital aerial photograph high resolution Larix kaempferi remote sensing tree crown
2009/8/24
The purpose of this research was to develop high resolution digital aerial photography to estimate fundamental stand parameters (number of standing trees, mean tree height, stem volume) in a Larix kae...