scholarly journals Snow-Buried Young Forest Trees Growing on Steep Slopes

1969 ◽  
Vol 31 (1) ◽  
pp. 19-23 ◽  
Author(s):  
Masao SAEKI ◽  
Hiroo MATSUOKA
Keyword(s):  
Forest Trees ◽  
Young Forest ◽  
Steep Slopes

An open-air system for exposure of young forest trees to sulphur dioxide and ozone

1995 ◽  
Vol 18 (3) ◽  
pp. 215-225 ◽  
Author(s):  
A. R. McLEOD
Keyword(s):  
Sulphur Dioxide ◽  
Forest Trees ◽  
Young Forest ◽  
Air System

Soil organic carbon and soil total nitrogen stocks, soil quality and vegetation composition during natural revegetation processes in a Mediterranean mid-mountain area

2020 ◽  
Author(s):  
Estela Nadal Romero ◽  
Pedro Sánchez Navarrete ◽  
Makki Khorchani ◽  
Luis Miguel Medrano-Moreno ◽  
Teodoro Lasanta
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Soil Quality ◽  
Total Nitrogen ◽  
Vegetation Composition ◽  
Mountain Areas ◽  
Soil Total Nitrogen ◽  
Young Forest ◽  
Natural Revegetation ◽  
Steep Slopes

<p>Mediterranean mid-mountain areas have been subject to significant human pressure through deforestation, cultivation of steep slopes, fires and overgrazing. However, during the 20<sup>th</sup> century, the mountainous areas of the northern rim of the Mediterranean region were affected by abandonment of cultivated fields and natural revegetation processes. Natural revegetation occurred in most of the lands where human activity (farming on steep slopes, grazing) declined in intensity or was abandoned, resulting in the expansion of shrubs, bushes and forests. What are the consequences of such processes on soil quality, soil organic carbon (SOC) and soil total nitrogen (TN) stocks and vegetation composition? What are the differences between the different land uses and land covers (LULCs)? The general aim of this study is to study the effects of natural revegetation processes after land abandonment on soil quality, SOC and soil TN stocks and vegetation composition in the Leza Valley (Iberian System, Spain). We hypothesized that natural revegetation processes improves soil quality and higher SOC and TN stocks. For this purpose, we analyzed 60 soil samples, from 5 LULCs and four depths (0-10, 10-20, 20-30, 30-40 cm): pasture, shrubs characterized by the presence of Cistus laurifolius, bushed characterized by the presence of Juniperus communis, Young forest (Quercus faginea), and old forest or dehesa. In addition, plant species inventories were carried out in each LULC.</p><p>The results related to physico-chemical soil properties indicated: (i) significant differences in soil quality between the first stages of natural revegetation (pasture and shrubs) and young forest (limited to the first 20 cm between shrub and young forest); (ii)  significant differences in SOC stocks between the first stage of natural revegetation (pasture) and young and old forests; (iii) significant differences in soil TN stocks between pasture and shrubs and young and old forests; and (iv) significant differences between the shrub families. Final results obtained through a Principal Component Analysis with all the variables differentiate forests from shrubs, bushes and pastures confirming our first hypothesis. We can conclude that natural revegetation is an effective strategy to improve soil quality and increase SOC and soil TN stocks.</p>

Validation of the stomatal flux approach for the assessment of ozone visible injury in young forest trees. Results from the TOP (transboundary ozone pollution) experiment at Curno, Italy

2009 ◽  
Vol 157 (5) ◽  
pp. 1497-1505 ◽  
Author(s):  
G. Gerosa ◽  
R. Marzuoli ◽  
R. Desotgiu ◽  
F. Bussotti ◽  
A. Ballarin-Denti
Keyword(s):  
Forest Trees ◽  
Ozone Pollution ◽  
Visible Injury ◽  
Young Forest ◽  
Stomatal Flux ◽  
Ozone Visible Injury

Growth and metal accumulation of young forest trees and understorey plants on contaminated topsoil: influence of subsoil and time

2019 ◽  
Vol 437 (1-2) ◽  
pp. 375-395 ◽  
Author(s):  
Madeleine S. Günthardt-Goerg ◽  
Pierre Vollenweider ◽  
Sandra Hermle ◽  
Rainer Schulin
Keyword(s):  
Metal Accumulation ◽  
Forest Trees ◽  
Young Forest ◽  
Understorey Plants

Notes on the habits and distribution of some Ghanaian bark beetles and ambrosia beetles (Coleoptera: Scolytidae and Platypodidae)

1963 ◽  
Vol 54 (2) ◽  
pp. 229-266 ◽  
Author(s):  
F. G. Browne
Keyword(s):  
Bark Beetles ◽  
Ambrosia Beetle ◽  
Forest Trees ◽  
Ambrosia Beetles ◽  
Beneficial Insects ◽  
Forest Insects ◽  
Dead Trees ◽  
Young Forest ◽  
Commercial Value ◽  
Seed Insects

Brief notes are given on the distribution and habits of 42 species of Scolytidae and 34 of Platypodidae that occur as common forest insects in Ghana. A considerable number of these can be considered as beneficial insects because they do little damage but assist in the rapid break-down of dead trees and felling slash. Others are injurious mainly as timber borers, shoot borers or, generally to a lesser extent, as bark beetles and seed insects. Trachyostus ghanaensis Schedl and Doliopygus dubius (Samps.) are of outstanding importance in their constant or frequent habit of attacking the wood of living trees of commercial value; Platypus hintzi Schanf., Doliopygus conradti (Strohm.) and D. brevis (Strohm.) are probably the most important ambrosia beetle borers of newly felled timber; and Xyleborus semiopacus Eichh. has been known to destroy whole plantations of young forest trees.

scholarly journals Carbohydrate depletion in roots impedes phosphorus nutrition in young forest trees

2021 ◽  
Author(s):  
Simon Clausing ◽  
Rodica Pena ◽  
Bin Song ◽  
Karolin Müller ◽  
Paula Mayer‐Gruner ◽  
...  
Keyword(s):  
Phosphorus Nutrition ◽  
Forest Trees ◽  
Young Forest ◽  
Carbohydrate Depletion

Forest Trees of North America

1880 ◽  
Vol 9 (234supp) ◽  
pp. 3730-3730
Author(s):  
Charles S. Sargent
Keyword(s):  
North America ◽  
Forest Trees

Development and Application of a Mathematical Model of Wave Action on Steep Slopes

1989 ◽  
Author(s):  
N. W. H. Allsop ◽  
J. V. Smallman ◽  
R. V. Stephens
Keyword(s):  
Mathematical Model ◽  
Wave Action ◽  
Steep Slopes

TWO NEW SEVERE LEAF SPOT DISEASE ON FOREST TREES OF JALGAON (MAHARASTRA) INDIA

2017 ◽  
Vol 23 (2) ◽  
Author(s):  
S. A. FIRDOUSI
Keyword(s):  
Leaf Spot ◽  
Fungal Disease ◽  
Leaf Spot Disease ◽  
Forest Trees ◽  
First Report ◽  
Spot Disease ◽  
Severe Leaf

During the survey of the forest fungal disease, of Jalgaon district, two severe leaf spot diseases on Lannae coromandelica and ( Ougenia dalbergioides (Papilionaceae) were observed in Jalgaon, forest during July to September 2016-17. The casual organism was identified as Stigmina lanneae and Phomopsis sp. respectively1-4,7. These are first report from Jalgaon and Maharashtra state.

DEVELOPING AND SELECTING SLOPE STABILIZATION TECHNIQUES IN MANAGING SLOPE FAILURES

2016 ◽  
Vol 12 (4) ◽  
Author(s):  
Ari Sandyavitri
Keyword(s):  
Retaining Wall ◽  
Value Engineering ◽  
Rating Systems ◽  
Slope Stabilization ◽  
Rockfall Hazard ◽  
Proactive Approach ◽  
West Sumatra ◽  
Hazard Rating ◽  
Hazard Rating Systems ◽  
Steep Slopes

This paper objectives are to; (i) identification of risky slopes (within 4 Provinces in Sumatra including Provinces of Riau, West Sumatra, Jambi and South Sumatra encompassing 840 kms of the “Jalan Lintas Sumatra” highway) based on Rockfall Hazard Rating Systems (RHRS) method; (ii) developing alternatives to stabilize slope hazards, and (iii) selecting appropriate slopes stabilization techniques based on both proactive approach and value engineering one. Based on the Rockfall Hazard Rating Systems (RHRS) method, it was identified 109 steep slopes prone to failure within this highway section. Approximately, 15 slopes were identified as potential high-risk slopes (RHRS scores were calculated >200 points). Based on the proactive approach, seven riskiest slopes ware identified. The preferred stabilization alternatives to remedy most of these slopes are suggested as follow; either (i) a combination of retaining wall and drainage, or (ii) gabion structure and drainage. However, different approaches may yield different results, there are at least 2 main consideration in prioritizing slope stabilization; (i) based on the riskiest slopes, and(ii) the least expensive stabilization alternatives.

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