搜索结果: 1-9 共查到“林学 Spatial distribution”相关记录9条 . 查询时间(0.093 秒)
Monitoring intra-annual and interannual variability in spatial distribution of plastic-mulched citrus in cloudy and rainy areas using multisource remote sensing data（图）
Monitoring intra-annual interannual variability spatial distribution plastic-mulched citrus
2024/3/29
The technology of canopy plastic mulching has been widely used in citrus orchards for protecting fruit trees from cold damage. Understanding the spatio-temporal dynamics of plastic-mulched citrus (PMC...
Spatial distribution of four spruce bark beetles in north-western Slovakia
infested spruces spatial distribution kriging
2015/3/6
Infestation density of four the most common spruce bark beetle species was estimated on 15 study sites (10 trees per site) in the Kysuce model region in 2006. Five half-metre long sections of the stem...
Spatial distribution of losses in growth of trees caused by the feeding of pine shoot beetles Tomicus piniperda and T. minor (Col., Scolytidae) in Scots pine stands growing within range of the influence of a timber yard in southern Poland
Pinus sylvestris (L.) Tomicus piniperda (L.)
2015/3/3
This study deals with the assessment of increment losses in Scots pine trees caused by the maturation
feeding of pine shoot beetles Tomicus piniperda (L.) and T. minor (Hart.) (Col., Scolytidae) in e...
Occurrence variations and spatial distribution patterns of Eriophyes tiliae (Pgst.) (Acari, Eriophyidae) subspecies in the urban environment
Eriophyes tiliae Tilia sp distribution patterns
2015/3/3
The occurrence of Eriophyes tiliae (Pgst.) subspecies was observed in lime trees in the urban area of Brno.
Mites presence was assessed in relation to the lime species, its age and health conditions...
Evaluation of the temporal and spatial distribution of non-methane hydrocarbon emissions from the forests inSlovakia
biogenic emissions isoprene monoterpenes volatile organic compounds Slovak forests
2015/2/6
The paper presents the first detailed inventory of non-methane hydrocarbon emissions from forest vegetation in Slovakia. Emissions rates of monoterpene, isoprene and other volatile organic compounds (...
A statistical small-area method of estimation of spatial distribution of the tree damage degree
survey sampling unrestricted simple random sampling Sinus system
2015/1/29
The objectives of this study are to demonstrate a small-area method of estimation of the spatial distribution of the tree damage degree, and to initially verify it during the assessment of fir (Abies ...
Study on DBH-structure of Populus euphratica and Their Spatial Distribution in the Lower Reaches of the Tarim River
胸径结构 胡杨 塔里木河 林木分布
2009/11/18
采用“面”上宏观调查与“点”上典型研究相结合, 集中对塔里木河下游阿拉干断面100 hm2的胡杨(Populus euphratica)林木分布与胸径结构进行了调查。结果发现, 在距河道0-20 m的范围内, 胸径为0-4 cm的幼龄胡杨占最多, 达到13.24%。以后随着离河道距离的增加, 幼龄胡杨所占比例逐渐减小。胸径分布范围简单, 胸径为16-36 cm的林木株数在胡杨林中所占的比例最多。另...
Spatial Distribution of Soil Water Repellency in a Japanese Cypress Plantation and an Adjacent Deciduous Broad-leaved Forest
deciduous broad-leaved forest forest soil Japanese cypress plantation spatial distribution water repellency
2009/8/28
Water repellency is recognized as an important soil property that can affect the flow and storage of water in forest soils at the slope scale, since it causes overland flow or preferential infiltratio...
The Effects of Thinning on the Spatial Distribution of Trees in an Old Chamaecyparis obtusa Plantation Quantitative Analysis Using the L-Function
long rotation old-aged stand spatial statistics tree spacing
2009/8/24
We investigated changes in the spatial distribution of trees in a 90-year-old Chamaecyparis obtusa plantation owned by Hieizan Enryakuji Temple using the L-function. The plantation is an example of lo...