搜索结果: 16-30 共查到“林学 Vegetation”相关记录47条 . 查询时间(0.129 秒)
Vegetation Cover Estimation Using Convolutional Neural Networks
CNN segmentation UAV vegetation cover estimation
2024/2/4
Vegetation is an important parameter in all bio- and ecosystems, and it should be monitored to conserve and restore the environment. This paper presents a design and implementation of a compact system...
Sensitivity of L-band vegetation optical depth to carbon stocks in tropical forests: a comparison to higher frequencies and optical indices
Vegetation optical depth Carbon density Tropical forests L-band Climate change
2024/2/4
Monitoring vegetation carbon in tropical regions is essential to the global carbon assessment and to evaluate the actions oriented to the reduction of forest degradation. Mainly, satellite optical veg...
Assessing Vegetation Composition and the Indicator Species Around Water Source Areas in a Pine Forest Plantation: A Case Study from Watujali and Silengkong Catchments, Kebumen, Indonesia
indicator species water source catchment
2024/2/29
This research aimed to assess vegetation composition and the indicator species around water source areas of pine forest plantation. Data were collected through interview and vegetation survey. Vegetat...
Ecological functions of vegetation as potentials of ecosystem services (floodplain alder forest in the Tríbeč microregion)
biomass black alder forest herbaceous understorey provisioning and production services
2017/4/6
Ecological functions of a black alder riparian forest (Aegopodio-Alnetum glutinosae) as capacities for the provision of ecosystem services were analysed and indicated by an inductive (bottom-up) appro...
Effect of black walnut (Juglans nigra) on the understorey vegetation – a case study of South Moravian forests (Czech Republic)
Ellenberg’s indicator values herb layer indigenous species ordination relevés
2017/4/6
The article analyses the influence of black walnut on forest phytocoenosis in South Moravian forests and assesses how its representation may affect the understorey vegetation of the forest ecosystems....
Effects of vegetation type and horizontal curve radius on the rate of tree pruning to provide line of sight on main access roads
tree pruning vegetation type sight line
2015/5/5
The present investigation was carried out to assess the influence of vegetation type and horizontal curve
radius on the rate of tree pruning to provide the line of sight on horizontal curves in Casp...
Ground vegetation as an important factor in the biodiversity of forest ecosystems and its evaluation in regard to nitrogen deposition
forest monitoring nutrificiation nitrophilous species vegetation diversity
2015/4/24
We documented the current typological and phytosociological characterisation of the ground vegetation as an essential component of biodiversity in 154 Czech forest monitoring plots and to describe its...
Influence of vegetation on phenolic acid contents in soil
Norway spruce larch rowan willow phenolic compounds pot experiment
2015/4/24
The study described in this paper was undertaken in order to assess the impact of different woody plants on the dynamics of phenolic acids in soil. The influence of plant litter on the amount of pheno...
The influence of Picea abies on herb vegetation in forest plant communities of the Veporské vrchy Mts.
beech forest biodiversity herb vegetation Picea abies Karst. species composition
2015/3/20
Natural mixed beech-fir forests were quite widely replaced by spruce dominated stands in Slovakia. Given the demands on the assessment of the forest status as well as on stopping the biodiversity loss...
Application of digital elevation model for mapping vegetation tiers
altitudinal vegetation zones digital elevation model linear models vegetation tiers
2015/3/19
The aim of this paper is to explore possibilities of application of digital elevation model for mapping vegetation tiers (altitudinal vegetation zones). Linear models were used to investigate the rela...
Soil preparation by ploughing in the floodplain forest and its influence on vegetation and primary soil characteristics
floodplain forests mechanical site preparation by ploughing physical and chemical soil analyses phytocoenology soil biological activity
2015/3/19
The paper analyzes the effect of whole-area site preparation by ploughing and of alternate field and forest crops on the understorey, soil biological activity and physical and chemical characteristics...
Visible foliar injury as a tool for the assessment of surface ozone impact on native vegetation: a case study from the Jizerské hory Mts
Jizerské hory Mts surface ozone validation visible symptoms
2015/3/19
Surface ozone is considered to be a very phytotoxic gaseous air pollutant. Its negative impacts at both the cell and the organ level have been shown, mainly as a result of experiments. However, the de...
Plant community variability within potential natural vegetation units: a case study from the Bohemian Karst
vegetation classification vegetation variability potential natural vegetation
2015/3/16
Based on a map of potential natural vegetation (PNV), actual vegetation was studied in the Mramor locality (106.4 ha). A total of 188 relev閟 were examined using stratified random sampling. A compariso...
Characteristics of 3rd (Querci-fageta s. lat.) and 4th (Fageta (abietis) s. lat.) vegetation tiers of north-eastern Moravia and Silesia (Czech Republic)
forest-typological classification system vegetation tiers Querci-fageta s. lat. Fageta (abietis) s. lat. characteristics of forest ecosystems north-eastern Moravia and Silesia Czech Republic
2015/3/12
Detailed characteristics (tree species composition, tree representation, identification features) are presented by 3rd (i.e. geobiocenoses of Querci-fageta s. lat.) and 4th (Fageta (abietis) s. lat.) ...
Derivation of target structure for forests of Norway spruce vegetation zone in Slovakia
Norway spruce target structure naturalness vlase
2015/3/6
Forests of the Norway spruce altitudinal vegetation zone occur on the upper limit of tree vegetation and they fulfil important ecological and social functions. A great part of these forests are man-ma...
