搜索结果: 1-15 共查到“林学 impact”相关记录44条 . 查询时间(0.276 秒)
Roads Impact Tree and Shrub Productivity in Adjacent Boreal Peatlands
boreal wooded peatlands resource access roads tree productivity dendrochronology
2024/1/23
Peatlands in the western boreal plains of Canada are important ecosystems as they store over two percent of global terrestrial carbon. However, in recent decades, many of these peatlands have been fra...
The Impact of Season on Productivity and Time Consumption in Timber Harvesting from Young Alder Stands in Lowland Poland
Alnus glutinosa commercial thinning season of timber harvesting productivity time consumption time study working time structure
2024/1/19
The purpose of this study was to establish the impact of season on productivity, labour consumption, and working time structure during timber harvesting from young alder stands (Alnus glutinosa Gaertn...
Impact of Forest Roads on Hydrological Processes
flood forest road forest works road network runoff sediment soil stream
2024/1/12
The current review summarizes the knowledge generated by the recently published studies of the last twenty years, in the field of forest road networks, concerning the impact of forest road constructio...
Ergonomic Impact of Multi-rotor Unmanned Aerial Vehicle Noise in Warehouse Environments
Unmanned Aerial Vehicle (UAV) Noise Human subject MANOVA
2023/12/21
Small multi-rotor unmanned aerial vehicles (UAVs) are poised to revolutionize commercial and logistics sectors through their versatility, maneuverability, and rapidly increasing sophistication and dec...
Anthropization and Climate Change: Impact on the Discharges of Forest Watersheds in Central Africa
climate change urbanization impervious area Cameroon runoff
2023/12/15
Climate change and anthropization are major drivers of river flows variability. However, understanding their simultaneous impact on discharges is limited. As a contribution to address this limitation,...
Assessment of Drought Impact on Net Primary Productivity in the Terrestrial Ecosystems of Mongolia from 2003 to 2018
terrestrial ecosystem NDVI BEPS NPP drought vegetation response
2023/12/8
Drought has devastating impacts on agriculture and other ecosystems, and its occurrence is expected to increase in the future. However, its spatiotemporal impacts on net primary productivity (NPP) in ...
IMPACT OF CLIMATE CHANGE ON THE GEOGRAPHICAL DISTRIBUTION OF A CLOUD FOREST INDICATOR TREE SPECIES
Climate variable Drimys angustifolia Upper-montane cloud forest
2023/12/6
The cloud forests are threatened due to the climate change process. Investigations seeking to predict how future climate change will affect species are of great importance as they are fundamental to g...
Nonlinear Mixed Effect Model Used in a Simulation of the Impact of Climate Change on Height Growth of?Cyclobalanopsis glauca
RegCM downscaling climate sensitive tree species nonlinear mixed effect model height growth of tree tree species diversity
2023/12/1
Localized climate is sensitive to terrain, underlying surface material, building distribution, green coverage and CO2?emissions. The Regional Climate Model (RegCM) was used to make a statistical detai...
How the Chicxulub impact gave rise to modern rainforests（图）
Chicxulub impact modern rainforests
2021/4/16
Tropical rainforests today are biodiversity hotspots and play an important role in the world's climate systems. A new U.S. National Science Foundation-funded study published in Science ...
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...
Impact of plot size and model selection on forest biomass estimation using airborne LiDAR: A case study of pine plantations in southern Spain
airborne laser scanning forest inventory regression survey design genetic selection methods
2017/4/6
We explored the usefulness of LiDAR for modelling and mapping the stand biomass of two conifer species in southern Spain. We used three different plot sizes and two statistical approaches (i.e. stepwi...
Impact of risk factor management on the sanitary condition of Norway spruce (Picea abies [L.] Karst.) pure stands in Latvia
compartment location compartment shape
2015/5/5
In management of young forest stands, it is often the case in forestry that several risk factors, biotic,
abiotic and anthropogenic ones, have to be dealt with. An anthropogenic factor is of great i...
Impact of interspecific relations between native red deer (Cervus elaphus) and introduced sika deer (Cervus nippon) on their rutting season in the Doupovské hory Mts.
shooting date population density
2015/5/5
The behaviour of sika and red deer during the rutting season is highly variable in relation to vocalization,
habitat preference during the rut, and onset and termination of rutting. The red deer is ...
Economic Impact of Douglas-fi r (Pseudotsuga menziesii [Mirb.] Franco) production in the Czech Republic
forest production cost forest production efficiency
2015/5/5
The article addresses the issues of Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) production in
the Czech Republic (CR). Our analysis shows that the tree species can occupy 149,616–163,713 ha i...
The impact of juvenile tree species canopy on properties of new forest floor
afforestation agricultural land forest floor topsoil nutrients
2015/4/24
To keep forest soils fertile, forest practitioners plant mixed stands that are composed of both economically efficient trees such as conifers and soil-improving broadleaves. This is a mandated practic...