effects of desertification slideshare

Desertification. Deforestation and desertification in developing countries. Economic effects. We look at causes of droughts and links to El Nino. Presentation on environmental degradation S Y B Com Presented by- Veenith Soman Shreyas Dani Vijay Choughule Vipul Kale Submitted to Mrs. Meenakshi madam Effects of animal extinction. Land degradation has accelerated during the 20 th and 21 st centuries due to increasing and combined pressures of agricultural and livestock production (over-cultivation, overgrazing, forest conversion), urbanization, deforestation and extreme weather events such … Harappan Civilization. Apart from the environmental effects which are bad enough, a loss in biodiversity also causes adverse economic effects. Desertification, the persistent degradation of drylands, threatens many livelihoods. Scientists have been concerned about desertification – causes, effects, and solutions – for quite some time now. The Co-Publications below are summaries of scientific reports of EU scientific committees, produced under contract with the DG Health and Consumers of the European Commission. It’s a real environmental problem that we need to fix before it is too late. Passive and active stomatal closure. They are all artistically enhanced with visually stunning color, shadow and lighting effects. And they’re ready for you to … Agricultural Land Pollution. It can be said, as agricultural policies affect land use, they have effects on the amount of soil erosion in agricultural regions through changes of the economic conditions of agricultural production [16]. Introduction. It’s contributed to the collapse of many major civilizations and empires — from Carthage, to the Harappan Civilization, to Ancient Greece, to the Roman Empire, to Ancient China, etc. 6. However, continued unabated, anthropogenic pollution and greenhouse gas emissions will further increase global warming, ocean acidification, desertification and changing climate patterns. Desertification Top 10 List. Across the world, desertification affects the livelihoods of millions of people who rely on the benefits that dryland ecosystems can provide. Pressures from human and livestock populations coupled with the effects of recurrent drought have led to a serious degradation … With increasing drylands, there has been 25% increase in annual dust emissions over the past century. Across the world, desertification affects the livelihoods of millions of people who rely on the benefits that dryland ecosystems can provide. Climate change makes it worse. Hydrological drought is associated with the effects of periods of precipitation (including snowfall) shortfalls on surface or subsurface water supply (i.e., streamflow, reservoir and lake levels, groundwater). The United Nations Convention to Combat Desertification: A Case Study of its application in Namibia Justine Braby 1. Introduction The global community has long… The effects of climate on the transmission biology of human diseases 45 IPCC Third Assessment Report 47 Direct effects on health 47 Indirect effects on health 48 iii Contents. Although the causes of landslides are wide ranging, they have 2 aspects in common; they are driven by forces of gravity and result from failure of soil and rock materials that constitute the hill slope: Loss of crops and water supplies lead to hardship, famine, and disease, while habitat loss causes loss of biodiversity. The frequency and severity of hydrological drought is often defined on a … Major Types of Land Pollution. The summaries are peer-reviewed and the publication process is overseen by the Commission. Home to a third of the human population in 2000, drylands occupy nearly half of Earth’s land area. Desertification affects global climate change through soil and vegetation losses. Millions of people may be forced to leave the land when it can no longer sustain them. It therefore reflects that when animals extinct, they reduces the variety of animals that were present in the earth’ s surface. Forests are vital to our Earth. 1. Causes of Landslides. Desertification mostly affects rural households who are forced to depend on natural resources for their livelihoods. This paper takes a fresh look at two of the major environmental hazards affecting the planet, namely deforestation and desertification, in terms of the nature and magnitude of the problem as faced by the developing world, and their causes and effects. Brazil once had the highest deforestation rate in the world and in 2005 still had the largest area of forest removed annually. Desertification is the persistent degradation of dryland ecosystems by variations in climate and human activities. While landslides are considered naturally occurring disasters, human-induced changes in the environment have recently caused their upsurge. Soil tillage The Millennium Ecosystem Assessment (MA) produced in 2005 by a large international panel of scientists explored possible options to avoid or reverse desertification and its negative impacts. We consider the causes of desertification and the role of humans. Increased dust storms are causes as well as effects of desertification. Title: Desertification: 1 Desertification . Home to a third of the human population in 2000, drylands occupy nearly half of Earth’s land area. Biodiversity simply refers to the total number species as well as ecosystems in the earth’s surface or of a given place. Author Willem Van Cotthem Posted on May 9, 2012 Categories Desertification Post navigation Previous Previous post: Global agriculture produces more eroding soil than food (Google / … It would be fair to say they’re linked in a vicious cycle. The novel coronavirus has undoubtedly impacted the environment. Desertification is the persistent degradation of dryland ecosystems.It affects the livelihoods of millions of people. R. K. Pachauri and Rajashree S. Kanetkar. Deforestation, the permanent destruction of forests in order to make the land available for other uses, is considered to be a contributing factor to global climate change. Effects of drought stress on maize from germination to physiological maturity are extensively elaborated in this chapter. It was important to assess the effects on yields under the desertification regions of Shandong. Increased deserts have allowed for a greater amount of loose sand to be available. We reflect on the progress of ICARDA’s new decentralized genebank architecture. These high-profile events received much attention from the world media and served to cement the association of desertification with Africa. 2.1.4. Similarly, in 1982–1986 the combined effects of severe drought and civil war killed more than 1 million Ethiopians. Effects of Drought. Trees purify our air, filter our water, prevent erosion, and act as a buffer against climate change. 300 million people live in forests worldwide. Many of them are also animated. There are numerous reasons and causes of land pollution, but the following 5 pose the most adverse effects to various life forms on earth.. 1. More so, drought and desertification lead to the migration of people to urban or other areas to engage in economic activities such as farming, grazing and fishing. From wildlife conservation to the renewable energy sector, COVID-19's effects can't be ignored. Drought is a drop in expected precipitation over a long period of time. production leads to soil salinity and desertification [15]. is the process by which land becomes desert; 2 Case study the Sahel. Let’s look into some of the factors that contribute to desertification, as well as effects … They are published both on the European Commission's website and on copublications.greenfacts.org The effects of drought are widespread and have devastating effects on the environment and the society as a whole. Desertification is the persistent degradation of dryland ecosystems by variations in climate and human activities. Desertification has many adverse effects, both economic and ecological. 1. Since 1970, over 700,000 square kilometres (270,000 sq mi) of the Amazon rainforest have been destroyed. For example, if we lost bees, we would suffer from a serious decline in crop yields which would lead the GDP to collapse and would also lead to an increase in famine. Xtra Gr 11 Geography: In this lesson on Drought and Desertification we assess which areas are prone to drought and desertification. 60 million of those humans are indigenous who are completely dependent on native woods. Desertification has played a major part in much of recent human history (last 10,000 or so years). The spread of desertification results in a degraded landscape. Overgrazing is a significant reason for desertification around the world. When we lose the animals through extinction, we lose biodiversity. We use a lot of fertilizers as well as pesticides, fungicides, and insecticides on our agricultural land in a bid to maximize yields. Assessments of health impacts by IPCC region 51 Africa 51 Asia 52 Australia and New Zealand 52 Europe 53 Latin America 54 They offer a home to plant and animal species while also providing natural resources such as medicine, food, timber, and fuel. It is estimated that each year 300 million tons of carbon are lost to the atmosphere from drylands as a result of desertification. Today, on World Day to Combat Desertification , we present important lessons from some of our recent initiatives that promote sustainable development across the dry areas and fight the effects of desertification. It affects food prices, wildfires, and wars. On this basis, extended deficiency of water can affect the society in various ways both directly and indirectly. We use examples of the effects of droughts and desertification on people and the environment. Indeed, dryland soils contain a lot of carbon which could be released into the atmosphere as a result of desertification, with significant consequences for the global climate system. The best way to combat desertification is to try to use drylands in a more sustainable and appropriate manner, so that these fragile ecosystems are conserved. Water use is part and parcel of almost every human activity as well as the life of plants and animals. 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