搜索结果: 1-15 共查到“林业工程 structure”相关记录22条 . 查询时间(0.296 秒)
Stereocomplexed and homocrystalline thermo-responsive physical hydrogels with a tunable network structure and thermo-responsiveness
NANOCOMPOSITE HYDROGELS POLY(LACTIC ACID) POLY(N-ISOPROPYLACRYLAMIDE) TOUGH GELS ELASTOMERS BEHAVIOR MEMORY CHAIN
2024/1/19
The widespread application of thermo-responsive hydrogels requires materials with robust mechanical properties and tunable responsiveness. Herein, we report robust thermo-responsive physical hydrogels...
Bio-based epoxy vitrimer for recyclable and carbon fiber reinforced materials: Synthesis and structure-property relationship
Vitrimer Epoxy-acid-anhydride system CFRMs Degradable Recycling
2023/11/30
Recycling or degradation of epoxy resins is difficult because of their covalent cross-linking structures, which causes resource crisis, environmental pollution, and resource waste. To address this cha...
Rosin‐derived poly(vinyl chloride) plasticizer: Synthesis, structure, and properties
rosin-based polyacid esters Synthesis structure properties
2024/2/29
In this work, rosin‐based plasticizer was synthesized by Diels–Alder (DA) and esterification. First, the maleopimaric acid (RT) was obtained by DA between the double bond of rosin and maleic anhydride...
3-D STRUCTURE OF INDIAN FORESTS – PERSPECTIVES FROM EXPERIMENTS ON THE FIRST FULLY-POLARIMETRIC TANDEM-X TOMOGRAMS
Radar Tomography SAR TanDEM-X Forest India Tropical Structure
2019/2/27
This paper provides a first hand view of the 3-D structure of the forests when viewed by X-band SAR data. Tomograms are generated using multi-polarimetric space-borne TerraSAR-X/TanDEM-X acquisitions ...
SEED STAND STRUCTURE OF BEECH ON MT. BLEGOŠ WITH SPECIAL RESPECT TO TRUNK QUALITY
beech Fagus sylvatica stand structure trunk quality seed stand Blegoš red heartwood
2009/11/27
In a mature European beech stand on Mt Blegoš (1250 m/asl), wood quality of the lower fourth part of the stem was assessed. The stand was approved as a selected seed stand in 2004 (Id. No. 4.0185...
FOREST HABITAT TYPES ON NATURA 2000 SITES IN LANDSCAPE STRUCTURE OF THE POHORJE MTS RANGE
Natura 2000 monitoring of forest habitat types landscape structure Pohorje Mts
2009/11/27
In Slovenia, the Natura 2000 network covers 35.5% of its territory or 286 areas, encompassing 10 forest habitat types. The majority of indicators for the assessment of the conservation status and chan...
STRUCTURE AND DYNAMICS OF OLD-GROWTH AND NEAR-NATURAL BEECH FORESTS IN EUROPE
beech (Fagus sylvatica L.) old-growth forest forest reserve forest structure and dynamics
2009/11/27
In past millennia, pure beech (Fagus sylvatica L.) forests covered vast areas of central and southeastern Europe. However, due to intensive forest exploitation by humans, few old-growth remnants of th...
Structure,development and growth of selection forests at the Granata research site
Selection forest (Plenterwald) selection system management stand structure
2009/11/27
The Granata research site was established for the study of structure, growth and regeneration of silver fir-European beech single stem selection forest. Three phytocoenological relevés were carried ou...
The effects of habitat structure on red deer (Cervus elaphus) body mass
red deer body weight habitat structure environmental factors population density forest edge
2009/11/27
In most mammalian species, body mass is one of the key factors affecting an individual's fitness.Itisthereforeimportanttoknowthecauses of its variability. The present paper analyses the influencesofha...
STRUCTURE OF HIGHQUALITY BEECH STANDS WITH REGARD TO THEIR VOLUME AND VALUE,AND THEIR INCREMENT IN SLOVENIA
beech stand growing stock stand value current volume increment current value increment
2009/11/26
The aim of the paper was to establish the structure of growing stocks, current volume increment, (commercial) value of growing stocks and current (commercial) value increment by different social colle...
LAND-USE CHANGES AND THE RESULTING SOCIO-ECONOMIC POPULATION STRUCTURE IN THE UPPER GORENJSKA REGION
land-use population socio-economic structure changes
2009/11/26
The paper analyses land-use changes in the Upper Gorenjska region (Slovenia) in the years 1827, 1896, 1979 and 2002. In 1827, 49 % of the land was covered with woods, whereas by 2002 this figure incre...
Assessing spatial structure in the beech and silver fir forest stands
stand density spatial distribution beech and silver fir stands
2009/11/26
Stand structures and spatial patterns were studied in three plots in the beech and silver fir forest on the Karst Plateau in Slovenia. We mapped all stems >10 cm in diameter at breast height (dbh) on ...
Forest stand structure influences biodiversity
biodiversity stand structure forest planning forest development phases environmental heterogeneity
2009/11/26
Healthy functioning of a forest requires biodiversity on a sufficiently high level. Its conservation has to be incorporated into forest management. Along with natural forest development every communit...
LANDSCAPE STRUCTURE AND BIODIVERSITY
landscape structure biodiversity land use birds Ljubljana Marshes
2009/11/25
Animal and plant species depend on suitable environmental conditions for their survival and reproduction. In the case study of the Ljubljana Marshes the assumption that land use diversity has a positi...
A COMPARISON OF STAND STRUCTURE AND PLANT SPECIES COMPOSITION BETWEEN VIRGIN FOREST REMNANT AND MANAGED FOREST,AND RESULT CONSIDERATION IN REGARD TO FORESTRY PLANNING
stand structure texture plant diversity managed forest virgin forest remnant forest planning
2009/11/25
Some results of comparisons of stand structure and plant species composition between virgin forest remnants and managed forests are presented. The horizontal structure of the analysed managed stands i...