With accuracy everybody has seen the pictures of human beings nothing but skin and bones, too weak to walk, using their last reserves of power to get some food in the news before. Most of these shocking pictures come from drylands. To put it more precisely from arid and semi-arid areas especially on the African continent. Beneath wars, droughts, underdevelopment and poverty the apparent invisible process of growing deserts is one reason for such horrible pictures. But the growth of deserts is not only an African or only a Third World problem. You can also "notice" it in other areas like for example in the Great Plains and the Middle East. This is the reason why we inevitably have to ask the question if desertification is only a central problem for desert-near areas.
Through a short clarification of one`s term followed by a detailed specification of causes and consequences of desertification and a concluding attempt to give a slight image of possibilities of solutions, preventions and after-care I will try to answer the question and show the reader the connection of human actions, natural influences and desertification.
In my expositions I mainly followed the work of Nick Middelton because it explains shortly but comprehensible a complex process and gives a good view about the main causes and consequences of desertification.
Table of Contents
1. Introduction
2. What is desertification?
3. The cause of desertification
3.1. Human activities
3.1.1. Overgrazing
3.1.2. Overcultivation
3.1.3. Vegetation clearance and deforestation
3.1.4. Salinization
3.2. Natural factors
3.2.1.Drought
3.2.2.Climatic influences
4. Consequences of desertification
4.1. Effects on society
4.1.1. Migration
4.1.2. Traditional responses and preparation
4.1.3. Famine
4.2. Feedback mechanisms
4.2.1. Albedo change
4.2.2. Atmospheric dust
5. Case Study
6. Conclusion
Research Objectives and Thematic Focus
This paper examines the complex process of desertification, aiming to determine whether it is strictly a localized issue for regions near deserts or a global phenomenon with wider environmental and societal implications. By analyzing the interplay between human activities and natural climatic factors, the study seeks to clarify the connections that lead to land degradation.
- The differentiation between human-induced land degradation and natural climatic influences.
- The socioeconomic impacts of desertification, including migration patterns and famine risks.
- Physical feedback mechanisms, such as albedo changes and atmospheric dust, that intensify drought.
- The role of the Sahel region as a primary case study for understanding desertification.
- Strategies for sustainable land management and the prevention of further degradation.
Excerpt from the Book
3.1. Human activities
When we talk about human activities in connection with desertification we will always meet the word "overuse". In other words methods of land use that have been employed to intensively5. There are a few reasons for too intensive cultivation or herding.
For example an area is experiencing drought while the less or labile vegetation layer caused by the lack of water is exposed to the same grade of use. The driving force behind overintensive land use is the increasing demand for food because of population growth especially in the developing countries6. To comply with this demand the countries try to increase their yields through new and more intensive technologies with the consequence that the ground could be sustainably damaged for example through soil compression. But also monocultures for cash-crops and using land that is not well-suited to agricultural use stresses the ecosystem dryland. So the ecosystems in these "overused areas" have less or no time to recover and mostly they are irreversible destroyed. In the following I will have a detailed look at the most important human activities affecting drylands.
Summary of Chapters
1. Introduction: Outlines the scope of the problem, identifying desertification as a global challenge rather than just an African or Third World issue.
2. What is desertification?: Provides a definition of the term, emphasizing the complex, anthropogenic, and natural factors involved in land degradation.
3. The cause of desertification: Explores the primary drivers of degradation, specifically categorizing them into human activities like overgrazing and natural factors like drought.
4. Consequences of desertification: Examines the societal impacts, such as migration and famine, and explains the physical feedback mechanisms that sustain the cycle of degradation.
5. Case Study: Applies the theoretical framework to the Sahel region in North Africa, highlighting its vulnerability to climatic and anthropogenic pressures.
6. Conclusion: Summarizes the need for integrated, sustainable strategies and reaffirms that desertification is a global problem linked to broader climate change.
Keywords
Desertification, drylands, overgrazing, overcultivation, land degradation, Sahel, drought, climate change, migration, famine, feedback mechanisms, sustainable agriculture, ecosystem, ITCZ, soil erosion.
Frequently Asked Questions
What is the core focus of this research?
The research explores the phenomenon of desertification, challenging the assumption that it is purely a regional problem and demonstrating its global significance.
What are the primary themes discussed?
Key themes include the causes of land degradation, human-environment interactions, socioeconomic impacts on populations, and the physical feedback loops that worsen drought conditions.
What is the ultimate goal of this paper?
The objective is to analyze the connections between human actions and natural influences to answer whether desertification is a problem exclusive to desert-adjacent areas.
Which scientific methods are used?
The paper utilizes a literature-based analytical approach, following the work of experts like Nick Middleton to explain the complex processes behind desertification.
What does the main body of the text cover?
It covers causes (human and natural), consequences (societal and environmental), specific feedback mechanisms, and a detailed case study of the Sahel region.
How would you characterize this paper with keywords?
The paper is defined by terms such as desertification, drylands, land degradation, sustainable agriculture, and ecological refugees.
How does the author explain the connection between albedo and desertification?
The author describes how the loss of vegetation increases surface albedo, causing the ground and air above to cool, which leads to sinking air and suppressed rainfall, thus creating a self-reinforcing feedback loop.
What is the significance of the Sahel region in this study?
The Sahel serves as the "prime example" because it was the area that initially brought global attention to the crisis of desertification due to its high climatic sensitivity.
- Quote paper
- Dipl.-Geograph/European Master in International Humanitarian Action Chris Hartmann (Author), 1999, Desertification - Only a central problem for desert-near areas?, Munich, GRIN Verlag, https://www.grin.com/document/46476
