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Book Impacts of a Stump Uprooting Operation on Properties of a Calcareous Loamy Soil and on Planted Seedling Performance

Download or read book Impacts of a Stump Uprooting Operation on Properties of a Calcareous Loamy Soil and on Planted Seedling Performance written by Richard Barrie Smith and published by . This book was released on 1994 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: To ascertain the impacts of stump uprooting operations conducted to control the spread of root disease on site productivity, 600 Douglas-fir and 600 lodgepole pine seedlings were planted on seven plots in a cutover north of Golden, British Columbia. Equal numbers of trees were planted on tracks and deposits created during stump uprooting, and on undisturbed ground, as confirmed by the presence of an intact humus layer. Soil characteristics were measured initially on disturbed and undisturbed portions of the cutover, and tree growth was monitored for eight growing seasons after planting. Foliage was sampled for nutrient content after the fifth year. Comparisons of productivity impacts resulting from uprooting stumps and from other forestry operations were made.

Book The Supporting Roots of Trees and Woody Plants Form Function and Physiology

Download or read book The Supporting Roots of Trees and Woody Plants Form Function and Physiology written by A. Stokes and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication comprises the proceedings of the first International Conference devoted to the structural roots of trees and woody plants. 'The Supporting Roots - Structure and Function,' 20-24 July 1998, Bordeaux, France. The meeting was held under the auspices ofIUFRO WPS 2. 01. 13 'Root Physiology and Symbiosis,' and its aim was to bring together scientific researchers, foresters and arboriculturalists, to discuss current problems in structural root research and disseminate knowledge to an audience from a wide disciplinary background. For the first time in an international conference, emphasis was placed on presenting recent reseach in the field of tree anchorage mechanics and root biomechanics. The way in which tree stability can be affected by root system symmetry and architecture was addressed, as well as how movement during wind sway can influence the development and shape of woody roots. The role of different nursery and planting techniques was discussed, in relation to effects on root system form and development. Root response to different environmental stresses, including water, temperature, nutrient and mechanical stress was addressed in detail. The structure and function of woody roots was also considered at different levels, from coarse to fine roots, with several papers discussing the interaction between roots and the rhizosphere. One of the conference highlights was the presentation of new methods in root research, by a series of workshops held at LRBB-INRA, Pierroton, on the northern border of the Gascony forest.

Book Early Survival and Height Growth of Douglas fir and Lodgepole Pine Seedlings and Variations in Site Factors Following Treatment of Logging Residues

Download or read book Early Survival and Height Growth of Douglas fir and Lodgepole Pine Seedlings and Variations in Site Factors Following Treatment of Logging Residues written by W. Lopushinsky and published by . This book was released on 1992 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Effects of Root Growth and Physiology on Drought Resistance in Douglas fir Lodgepole Pine and White Spruce Seedlings

Download or read book Effects of Root Growth and Physiology on Drought Resistance in Douglas fir Lodgepole Pine and White Spruce Seedlings written by Smit Julie and published by . This book was released on 1993 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Impacts of Skidroads on Properties of a Calcareous Loamy Soil and on Planted Seedling Performance

Download or read book Impacts of Skidroads on Properties of a Calcareous Loamy Soil and on Planted Seedling Performance written by Richard Barrie Smith and published by . This book was released on 1994 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: A plantation consisting of three plots with 160 seedlings each of Douglas-fir (Pseudotsuga menziesii) and lodgepole pine (Pinus contorta var. latifolia) was established in a cutover north of Golden, British Columbia, in the Interior Cedar-Hemlock biogeoclimatic zone. To determine the impact of contour-built skidroads on survival and subsequent growth of planted seedlings, plots straddled selected segments of the skidroads. Seedlings were planted in four disturbance categories on the skidroads and in undisturbed soil above and below the skidroads. Soil characteristics were measured initially on the skidroads and in the undisturbed soil adjacent to the skidroads and tree growth was monitored for eight growing seasons after planting. Foliage was sampled for nutrient content at the end of the fifth year.‍?The greatest adverse impacts on the soil were found in the inner track, i.e., the portion of the skidroads lying next to the cutbank. Here, the top 20 cm of mineral soil was on average 52% denser and 62% more resistant to penetration than the equivalent depth of undisturbed mineral soil. Soils in the outer track were also seriously degraded whereas the soils in the berm were not markedly different from the undisturbed situation in terms of density and penetrability. Disturbance exposed subsoil with inherently higher levels of free carbonates and a pH range of 6.3-7.0 compared with an average of 5.3 for the upper portion of undisturbed soil. ‍?Survival of Douglas-fir seedlings was significantly greater on the skidroad surface than on sidecast or undisturbed soil. However, growth of both Douglas-fir and lodgepole pine was reduced on skidroads, particularly in the inner track; reductions 5 years after planting amounted to 33% in height and 53% in volume for Douglas-fir and 32% and 48%, respectively, for lodgepole pine. After 8 years reductions were generally less, amounting to 25% in height and 38% in volume for Douglas-fir and 26% and 49%, respectively, for lodgepole pine. Growth of seedlings planted in the sidecast and berm was not significantly different than in undisturbed soil. The distinct character of the inner track was evident also by a relatively slow development of vegetation and by a composition of plant species dissimilar from that found on other parts of the skidroad or on undisturbed ground.‍?Correlations are made among soil and seedling growth characteristics to explain some of the results and to guide further research.

Book Current Abstracts

Download or read book Current Abstracts written by and published by . This book was released on 1996-05 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Soil and Root Damage in Forestry

Download or read book Soil and Root Damage in Forestry written by Iwan Wasterlund and published by Elsevier. This book was released on 2020-08-26 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agroforestry has significantly impacted our forests, but an often-overlooked issue is the effect of harvesting on soils and root systems. Soil and Root Damage in Forestry explains how soil and roots might be damaged through logging activities or silvicultural activities, how resulting root diseases impact the root and soil systems, and the impacts of chemical applications on the soil and root system. This book goes beyond the ‘why’ to also provide methods to reduce the impacts of machines on soils and offers solutions to minimize the impacts of machines on soils. Soil and Root Damage in Forestry serves as a valuable resource not only for those already working in soil science and forest ecology, but also provides insights for advanced students seeking an entrance to the "hidden half" of the planet. Combines damages to soil and roots in one volume for the first time Includes calculations related to soil strength providing soil scientists and ecologists with methods to estimate root damage Provides suggestions on how to reduce the impact of harvesting on soil and root systems

Book Canadian Journal of Forest Research

Download or read book Canadian Journal of Forest Research written by and published by . This book was released on 2014 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Ecology and Regeneration of Lodgepole Pine

Download or read book Ecology and Regeneration of Lodgepole Pine written by James E. Lotan and published by . This book was released on 1983 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Information Report

Download or read book Information Report written by and published by . This book was released on 1985 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Research Paper PNW

Download or read book Research Paper PNW written by and published by . This book was released on 1978 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: