A Literature Review of the Effects of Intensive Forestry on Forest Structure and Plant Community Composition at the Stand and Landscape Levels
Author: Erika L. Rowland
Publisher:
Published: 2005
Total Pages: 40
ISBN-13:
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Author: Erika L. Rowland
Publisher:
Published: 2005
Total Pages: 40
ISBN-13:
DOWNLOAD EBOOKAuthor: Andrew M. Barton
Publisher: UPNE
Published: 2012
Total Pages: 368
ISBN-13: 1584658320
DOWNLOAD EBOOKThe ecology of the ever-changing Maine forest
Author: Susan J. Hannon
Publisher:
Published: 2005
Total Pages: 47
ISBN-13: 9781552611807
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 2005
Total Pages: 74
ISBN-13:
DOWNLOAD EBOOKAuthor: João Carlos Azevedo
Publisher:
Published: 2004
Total Pages:
ISBN-13:
DOWNLOAD EBOOKChanges in landscape pattern caused by changes in forest management, namely the Sustainable Forestry Initiative (SFI), and the implications of these structural changes on landscape processes were analyzed. Landscape structure was studied based upon the comparison of landscapes with different management histories. Ecological processes were analyzed based upon simulation of stand and landscape attributes of habitats for several vertebrate species and upon simulation of hydrological processes such as water and sediment yield. A methodology to integrate landscape and stand pattern and dynamics with landscape processes was developed for this work. It integrates a forest landscape structure model, several stand level growth and yield models, vertebrate habitat models, and a hydrological model. The comparisons among landscapes revealed that forest management has a strong influence on landscape structure. The SFI program increases fragmentation of the landscape indicated by the presence of more and smaller patches, more edges, more complex shapes, and less and smaller core areas. Traditional intensive and extensive management show comparable patterns characterized by high aggregation and connectivity. Landscapes managed according to the SFI program show higher Habitat Suitability Index (HSI) values for American woodcock, American beaver, wild turkey, fox squirrel, and gray squirrel. HSI is higher for pine warbler in the landscape not managed according to the SFI program. Downy woodpecker and barred owl present very reduced HSI values in either landscape. The SFI program induced fragmentation of the habitat of pine warbler and the establishment of narrow and elongated habitats in a network structure for the remaining species. Both patterns are determined by SMZs. The scenario representing management according to the SFI program presents higher sediment yield at the watershed level than the scenario representing management not according to the SFI program due to higher channel erosion related to the absence of buffer strips in the non-SFI scenario. In general, management according to the SFI program increases landscape diversity and evenness, habitat suitability for most species, potential vertebrate diversity, and provides habitat structure suitable for most species. This management also decreases sediment loss at the watershed level.
Author: W.J. Dyck
Publisher: Springer Science & Business Media
Published: 2012-12-06
Total Pages: 381
ISBN-13: 9401112703
DOWNLOAD EBOOKThe International Energy Agency Bioenergy Agreement was initiated as the Forestry Energy Agreement in 1978. It was expanded in 1986 to form the Bioenergy Agreement. Since that time the Agreement has thrived with some fifteen countries (Austria, Belgium, Canada, Denmark, Finland, Italy, Japan, Netherlands, New Zealand, Norway, Sweden, Switzerland, United Kingdom, United States and the CEC) currently being signatories. The objective of the Agreement is to establish increased programme and project cooperation between the participants in the field of bioenergy. The environmental consequences of intensive forest harvesting have been the subject of intense interest for the Agreement from its initiation. This interest was formulated as a Cooperative Project under the Forestry Energy Agreement in 1984. It developed further under each of the subsequent three-year Tasks of the Bioenergy Agreement (Task III, Activity 3 "Nutritional consequences of intensive forest harvesting on site productivity", Task VI, Activity 6 "Environmental impacts of harvesting" and more recently Task IX, Activity 4 "Environmental impacts of intensive harvesting". The work has been supported by five main countries from within the Bioenergy Agreement: Canada, New Zealand, Sweden, UK, and USA. The continued work has resulted in a significant network of scientists work ing together towards a common objective - that of generating a better under standing of the processes involved in nutrient cycling and the development of management regimes which will maintain or enhance long term site productivity.
Author: James Arthur Rochelle
Publisher: BRILL
Published: 1999-01-01
Total Pages: 340
ISBN-13: 9789004113886
DOWNLOAD EBOOKThe book contains 15 chapters and provides an overview and synthesis of forest fragmentation and its influences on key ecological processes and vertebrate productivity. Land use practices and their effects on vertebrate populations and productivity are discussed and examples of several planning approaches to address landscape-level management effects are described.
Author:
Publisher:
Published: 2003
Total Pages: 172
ISBN-13:
DOWNLOAD EBOOKAuthor: Peter Newton
Publisher: CIFOR
Published: 2015-03-03
Total Pages: 17
ISBN-13: 6021504771
DOWNLOAD EBOOKCommunity-managed forests can secure greater sustainability of forests and more equitable livelihood outcomes for stakeholders than centralized forest management. However, there remains an inadequate understanding of whether environmental and socioeconomic outcomes are synergistic or trade-offs, and how they vary in relation to biophysical, institutional, and socioeconomic characteristics. This systematic review will collate the collective experiences of multiple decades of research on community-managed forests around a common set of comparable indicators, identifying the characteristics associated with improved outcomes globally as well as regionally.
Author: Arild Angelsen
Publisher: World Bank Publications
Published: 2007
Total Pages: 43
ISBN-13:
DOWNLOAD EBOOKThis paper presents a framework for analyzing tropical deforestation and reforestation using the von Thunen model as its starting point: land is allocated to the use which yields the highest rent, and the rents of various land uses are determined by location. Forest cover change therefore becomes a question of changes in rent of forest versus non-forest use. While this is a simple and powerful starting point, more intriguing issues arise when this is applied to analyze real cases. An initial shift in the rent of one particular land use generates feedbacks which affect the rent of all land uses. For example, a new technology in extensive agriculture should make this land use more profitable and lead to more forest clearing, but general equilibrium effects (changes in prices and local wages) can modify or even reverse this conclusion. Another issue is how a policy change or a shift in broader market, technological, and institutional forces will affect various land use rents. The paper deals with three such areas: technological progress in agriculture, land tenure regimes, and community forest management. The second part of the paper links the von Thunen framework to the forest transition theory. The forest transition theory describes a sequence over time where a forested region goes through a period of deforestation before the forest cover eventually stabilizes and starts to increase. This sequence can be seen as a systematic pattern of change in the agricultural and forest land rents over time. Increasing agricultural rent leads to high rates of deforestation. The slow-down of deforestation and eventual reforestation is due to lower agricultural rents (the economic development path) and higher forest rent (the forest scarcity path). Various forces leading to these changes are discussed and supported by empirical evidence from different tropical regions.