搜索结果: 1-15 共查到“林学 quality”相关记录43条 . 查询时间(0.218 秒)
Effects of Thinning Intensity on Forest Floor and Soil Biochemical Properties in an Aleppo Pine Plantation after 13 Years: Quantity but Also Quality Matters
Pinus halepensis adaptive forest management Mediterranean forest soil organic carbon basal respiration
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2023/12/7
In order to quantify the impacts of silvicultural treatments in semiarid forests, it is necessary to know how they affect key aboveground processes and also properties characterizing the forest floor ...
Site Quality Classification Models of Cunninghamia Lanceolata Plantations Using Rough Set and Random Forest West of Zhejiang Province, China
Cunninghamia lanceolata plantations site quality classification models site quality evaluation rough set random forest
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2023/12/1
The site quality evaluation of plantations has consistently been the focus in matching tree species with sites. This paper studied the site quality of Chinese fir (Cunninghamia lanceolata) plantations...
Evaluation of C Stocks in Afforested High Quality Agricultural Land
afforestation ecosystem C stocks soil C stocks C sequestration productive arable land
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2023/11/22
编号 010038305
推送时间 20230220
研究领域 森林生态
年份 2022
类型 期刊
语种 英语
标题 Evaluation of C Stocks in Afforested High Quality Agricultural Land
来源期刊 forest
期 第383期
发表时间 20221203...
Shoot Nutrition and Flavor Variation in Two Phyllostachys Species: Does the Quality of Edible Bamboo Shoot Diaphragm and Flesh Differ?
Shoot Nutrition Flavor Variation Phyllostachys Species
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2024/5/10
For their quality evaluation, it is essential to determine both bamboo shoot nutrition and palatability, which will have a decisive effect on their economic value and market potential. However, differ...
Striking 20-year grasshopper declines tied to quality of prairie grasses（图）
20-year grasshopper declines tied quality prairie grasses
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2020/3/13
A new study shows that grasshopper numbers have declined more than 30% in a Kansas grassland preserve over the past two decades. The results were published in the journal Proceedings of the Natio...
Genetic modification of poplar trees saves air quality（图）
Genetic modification poplar trees air quality
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2020/1/19
Poplar trees are widely used in commercial products, but, like several other tree species, they emit gases to the atmosphere that worsen air pollution and alter climate. Now field trials in Oregon and...
Effects of Long-Term Successive Rotations, Clear-Cutting and Stand Age of Prince Rupprecht’s larch (Larix principis-rupprechtii Mayr) on Soil Quality
soil quality successive planting generation stand age clear-cutting Larix principis-rupprechtii Mayr
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2024/2/28
A decline in soil quality is a major factor contributing to the degradation of forest ecological function. Vegetation plays a vital role in maintaining soil quality; however, the influence of plantati...
Quality of organic and upper mineral horizons of mature mountain beech stands with respect to herb layer species
forest floor top soil layers soil chemical characteristics Calamagrostis villosa Vaccinium myrtillus Avenella flexuosa
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2016/5/11
The study analyses the chemical properties of the soil in open-canopy beech stands in relation to the predominant species of ground vegetation. A hypothesis is examined whether the predominant ground ...
Air Quality and Ozone Pollution Models for Forested Areas May Be Too Simple
Air Quality Ozone Pollution Models Forested Areas Too Simple
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2015/10/13
A new study assessing the influence of species diversity of canopy trees on the amount of ozone precursors a forest emits suggests that atmospheric chemistry models in use now may underestimate the im...
The quality and the depth of dormancy of beechnuts in individual stand groups with varying climatic conditions within a single unit of approval
beechnuts germination rate of germination temperature precipitation seed collection
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2015/9/15
The goal of this study was to analyse the quality and dormancy of beechnuts originating from different
harvesting sites within large UA and to determine the homogeneity of seed lots from large-scale...
Quantity and quality of litterfall in young oak stands
Quercus petraea (Matt.) Liebl climatic factors nutrients
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2015/5/5
Litterfall, an important component of the nutrient cycle in forest ecosystems, was measured for 9 years
in young oak stands on two localities classified as beech-oak climax (Fageto-Quercetum). We es...
Tree health influences diameter growth along site quality, crown class and age gradients in Nothofagus forests of southern Patagonia
Nothofagus pumilio annual diameter increment
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2015/4/24
We examined the influence of tree health on annual diameter increment of trees along gradients in stand site quality, crown classes and tree age in Nothofagus pumilio forests of Southern Patagonia. He...
Relation between selected indicators of forest stand diversity and quality of timber production in young stands aged up to 40 years
species and structural diversity managed forest assortment
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2015/4/24
The present study examines the relationships between the indicators of tree species and structural diversity and the quality of timber production in young even-aged forest stands with the average age ...
Effects of seed origin, growing medium and mini-plug density on early growth and quality of black locust (Robinia pseudoacacia [L.]) seedlings
mini-plug seedlings growth traits survival mini-plug transplants forest restoration
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2015/4/14
The objective of this study was to identify optimal growing conditions for the production of high-quality mini-plug seedlings of black locust (Robinia pseudoacacia [L.].). Two seed origins (Greek and ...
Evaluating productivity, cost, chip quality and biomass recovery for a mobile chipper in Australian roadside chipping operations
mobile chipper biomass productivity harvest residues energy content Pinus radiata Australia
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2015/4/14
The Bruks mobile chipper was tested for chipping extracted non-merchantable stemwood at the roadside in Pine plantation in Victoria. The elemental time study method was used to evaluate the system pro...