Bulletin

Bulletin
Author:
Publisher:
Total Pages: 844
Release: 1936
Genre: Agriculture
ISBN:

Some numbers are reprints from scientific journals.

Forestry and Water Conservation in South Africa

Forestry and Water Conservation in South Africa
Author: Brett Bennett
Publisher: ANU Press
Total Pages: 289
Release: 2015-11-11
Genre: Nature
ISBN: 1925022846

This innovative interdisciplinary study focuses on the history, science, and policy of tree planting and water conservation in South Africa. South Africa’s forestry sector has sat—often controversially—at the crossroads of policy and scientific debates regarding water conservation, economic development, and biodiversity protection. Bennett and Kruger show how debates about the hydrological impact of exotic tree planting in South Africa shaped the development of modern scientific ideas and state policies relating to timber plantations, water conservation, invasive species control, and biodiversity management within South Africa as well as elsewhere in the world. Forestry and Water Conservation in South Africa shows how scientific research on the impact of exotic and native vegetation led to the development of a comprehensive national policy for conserving water, producing timber, and protecting indigenous species from invasive alien plants. Policies and laws relating to forests and water began to change in the late 1980s and early 1990s as a result of political and administrative changes within South Africa. This book suggests that the country’s contemporary policies towards timber plantations, guided by the National Water Act of 1998, need to be reconsidered in light of the authors’ findings. Bennett and Kruger also call for more interdisciplinary research and greater emphasis on integrated policies and management plans for forestry, invasive alien plants, water conservation, and biodiversity preservation.

A guide to forest–water management

A guide to forest–water management
Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
Total Pages: 184
Release: 2021-08-24
Genre: Technology & Engineering
ISBN: 9251348510

Many people worldwide lack adequate access to clean water to meet basic needs, and many important economic activities, such as energy production and agriculture, also require water. Climate change is likely to aggravate water stress. As temperatures rise, ecosystems and the human, plant, and animal communities that depend on them will need more water to maintain their health and to thrive. Forests and trees are integral to the global water cycle and therefore vital for water security – they regulate water quantity, quality, and timing and provide protective functions against (for example) soil and coastal erosion, flooding, and avalanches. Forested watersheds provide 75 percent of our freshwater, delivering water to over half the world’s population. The purpose of A Guide to Forest–Water Management is to improve the global information base on the protective functions of forests for soil and water. It reviews emerging techniques and methodologies, provides guidance and recommendations on how to manage forests for their water ecosystem services, and offers insights into the business and economic cases for managing forests for water ecosystem services. Intact native forests and well-managed planted forests can be a relatively cheap approach to water management while generating multiple co-benefits. Water security is a significant global challenge, but this paper argues that water-centered forests can provide nature-based solutions to ensuring global water resilience.

Models, Methods, Concepts & Applications of the Analytic Hierarchy Process

Models, Methods, Concepts & Applications of the Analytic Hierarchy Process
Author: Thomas L. Saaty
Publisher: Springer Science & Business Media
Total Pages: 342
Release: 2012-04-11
Genre: Business & Economics
ISBN: 1461435978

The Analytic Hierarchy Process (AHP) is a prominent and powerful tool for making decisions in situations involving multiple objectives. Models, Methods, Concepts and Applications of the Analytic Hierarchy Process, 2nd Edition applies the AHP in order to solve problems focused on the following three themes: economics, the social sciences, and the linking of measurement with human values. For economists, the AHP offers a substantially different approach to dealing with economic problems through ratio scales. Psychologists and political scientists can use the methodology to quantify and derive measurements for intangibles. Meanwhile researchers in the physical and engineering sciences can apply the AHP methods to help resolve the conflicts between hard measurement data and human values. Throughout the book, each of these topics is explored utilizing real life models and examples, relevant to problems in today’s society. This new edition has been updated and includes five new chapters that includes discussions of the following: - The eigenvector and why it is necessary - A summary of ongoing research in the Middle East that brings together Israeli and Palestinian scholars to develop concessions from both parties - A look at the Medicare Crisis and how AHP can be used to understand the problems and help develop ideas to solve them.

Knots in Second-growth Pine and the Desirability of Pruning

Knots in Second-growth Pine and the Desirability of Pruning
Author: Benson H. Paul
Publisher:
Total Pages: 1026
Release: 1938
Genre: Pine
ISBN:

The pruning of young trees in sparsely and unevenly stocked stands will greatly improve the resulting lumber grades. In northern white and red pines, even in fully stocked stands, artificial pruning is essential for the production of any of the best grades of lumber in a reasonable time.

Advancing the forest and water nexus

Advancing the forest and water nexus
Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
Total Pages: 140
Release: 2019-10-18
Genre: Technology & Engineering
ISBN: 925131859X

Forests are intrinsically linked to water – forested watersheds provide 75 percent of our accessible freshwater resources (Millennium Ecosystem Assessment, 2005) – and both forest and water resources are relevant to the achievement of all 17 Sustainable Development Goals. Despite the important interlinkages, the forest-water nexus is often unaccounted for in policy and planning. For example, three quarters of forests are not managed for soil and water conservation, which poses a fundamental challenge to achieving sustainable and resilient communities and ecosystems. It is paramount to employ an integrated approach to forest and water resources in management and policy that takes into account the complexity and contextual nature of forest-water relationships. To achieve this, we must improve our understanding of forest-water relationships within local contexts and at different scales, as well as our ability to design, implement, and learn from landscape approaches that both rely on these forest-water relationships, and impact them. In this context, FAO’s Forest and Water Programme has developed a module-based capacity development facilitation guide for project and community stakeholders involved in forest, water and natural resource management to ensure we apply our knowledge to better manage forests and trees for their multiple benefits, including water quantity, quality and the associated socio-economic benefits that people within and outside forests so heavily depend on.

The protective functions of forests in a changing climate - European experience

The protective functions of forests in a changing climate - European experience
Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
Total Pages: 144
Release: 2021-10-13
Genre: Technology & Engineering
ISBN: 9251343179

The objective of this publication is to present the policy and management approach of each member country on its protective forests. The goal of the member countries is to increase the resilience of mountain forests and ensure the sustainability of their protective functions for society. Each country report covers the following topics: 1) definition of protective forests; 2) characteristics of the national protective forest system; 3) challenges encountered in the management and strengthening of protective forests, including climate change impacts; 4) governance of the protective forest system; and 5) monitoring and planning systems for protective forests. Countries have defined, characterized, and identified challenges inherent to their protective forests, and it is through their appropriate governance, management and planning that the forests are able to provide ecosystem services in a sustainable way. In the context of a changing climate, the approach has to be revisited and adapted to novel and increasingly more uncertain conditions. This review of reports from 12 countries shows that especially mountain regions in Europe are facing common challenges and that different approaches can be learnt from each another. We hope that this report may provide a basis for further actions in transboundary and international cooperation for maintaining and enhancing protective forests.

Forest Hydrology

Forest Hydrology
Author: Devendra Amatya
Publisher: CABI
Total Pages: 309
Release: 2016-09-14
Genre: Technology & Engineering
ISBN: 1780646607

Forests cover approximately 26% of the world's land surface area and represent a distinct biotic community. They interact with water and soil in a variety of ways, providing canopy surfaces which trap precipitation and allow evaporation back into the atmosphere, thus regulating how much water reaches the forest floor as through fall, as well as pull water from the soil for transpiration. The discipline "forest hydrology" has been developed throughout the 20th century. During that time human intervention in natural landscapes has increased, and land use and management practices have intensified. The book will be useful for graduate students, professionals, land managers, practitioners, and researchers with a good understanding of the basic principles of hydrology and hydrologic processes.

Saving the World

Saving the World
Author: Brett M. Bennett
Publisher: Reaktion Books
Total Pages: 286
Release: 2024-07-06
Genre: Nature
ISBN: 1789148995

An illuminating history of the forgotten concept of climatic botany that underscores how vital forests are to our future. Saving the World tells the forgotten history of climatic botany, the idea that forests are essential for creating and recycling rain. Long before the specter of global warming, societies recognized that deforestation caused drastic climate shifts—as early as 1770, concerns over deforestation spurred legislation to combat human-induced climate change. Across the twentieth century, climatic botany experienced fluctuating fortunes, influenced by technological advancements and evolving meteorological theories. Remarkably, contemporary scientists are rediscovering the crucial role of forests in rainfall recycling, unaware of the long history of climatic botany. This enlightening book is essential reading for anyone passionate about conserving the world’s forests and preserving our climate for future generations.