effects of desertification slideshare

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. Passive and active stomatal closure. Biodiversity simply refers to the total number species as well as ecosystems in the earth’s surface or of a given place. Economic effects. 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. 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). Increased deserts have allowed for a greater amount of loose sand to be available. Increased dust storms are causes as well as effects of desertification. These high-profile events received much attention from the world media and served to cement the association of desertification with Africa. Assessments of health impacts by IPCC region 51 Africa 51 Asia 52 Australia and New Zealand 52 Europe 53 Latin America 54 Across the world, desertification affects the livelihoods of millions of people who rely on the benefits that dryland ecosystems can provide. Drought is a drop in expected precipitation over a long period of time. Presentation on environmental degradation S Y B Com Presented by- Veenith Soman Shreyas Dani Vijay Choughule Vipul Kale Submitted to Mrs. Meenakshi madam Major Types of Land Pollution. 1. Desertification. 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. Effects of Drought. 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. Forests are vital to our Earth. Home to a third of the human population in 2000, drylands occupy nearly half of Earth’s land area. 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: With increasing drylands, there has been 25% increase in annual dust emissions over the past century. Trees purify our air, filter our water, prevent erosion, and act as a buffer against climate change. Similarly, in 1982–1986 the combined effects of severe drought and civil war killed more than 1 million Ethiopians. 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 / … Desertification mostly affects rural households who are forced to depend on natural resources for their livelihoods. We look at causes of droughts and links to El Nino. R. K. Pachauri and Rajashree S. Kanetkar. They are published both on the European Commission's website and on copublications.greenfacts.org Climate change makes it worse. Loss of crops and water supplies lead to hardship, famine, and disease, while habitat loss causes loss of biodiversity. Desertification Top 10 List. Desertification is the persistent degradation of dryland ecosystems by variations in climate and human activities. Soil tillage Deforestation and desertification in developing countries. It affects food prices, wildfires, and wars. Desertification is the persistent degradation of dryland ecosystems.It affects the livelihoods of millions of people. Desertification has played a major part in much of recent human history (last 10,000 or so years). 6. Xtra Gr 11 Geography: In this lesson on Drought and Desertification we assess which areas are prone to drought and desertification. Scientists have been concerned about desertification – causes, effects, and solutions – for quite some time now. 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. On this basis, extended deficiency of water can affect the society in various ways both directly and indirectly. 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. Agricultural Land Pollution. Desertification, the persistent degradation of drylands, threatens many livelihoods. Let’s look into some of the factors that contribute to desertification, as well as effects … From wildlife conservation to the renewable energy sector, COVID-19's effects can't be ignored. The frequency and severity of hydrological drought is often defined on a … Introduction. 300 million people live in forests worldwide. The United Nations Convention to Combat Desertification: A Case Study of its application in Namibia Justine Braby 1. Harappan Civilization. Apart from the environmental effects which are bad enough, a loss in biodiversity also causes adverse economic effects. We use examples of the effects of droughts and desertification on people and the environment. 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. is the process by which land becomes desert; 2 Case study the Sahel. 1. 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 … Many of them are also animated. Effects of drought stress on maize from germination to physiological maturity are extensively elaborated in this chapter. The novel coronavirus has undoubtedly impacted the environment. In 2012, the Amazon was approximately 5,400,000 square kilometres (2,100,000 sq mi), which is only 87% of the Amazon's original size. Effects of animal extinction. 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. Since 1970, over 700,000 square kilometres (270,000 sq mi) of the Amazon rainforest have been destroyed. production leads to soil salinity and desertification [15]. Across the world, desertification affects the livelihoods of millions of people who rely on the benefits that dryland ecosystems can provide. We reflect on the progress of ICARDA’s new decentralized genebank architecture. It would be fair to say they’re linked in a vicious cycle. It’s a real environmental problem that we need to fix before it is too late. We consider the causes of desertification and the role of humans. The summaries are peer-reviewed and the publication process is overseen by the Commission. It was important to assess the effects on yields under the desertification regions of Shandong. And they’re ready for you to … We use a lot of fertilizers as well as pesticides, fungicides, and insecticides on our agricultural land in a bid to maximize yields. While landslides are considered naturally occurring disasters, human-induced changes in the environment have recently caused their upsurge. It is estimated that each year 300 million tons of carbon are lost to the atmosphere from drylands as a result of desertification. They offer a home to plant and animal species while also providing natural resources such as medicine, food, timber, and fuel. Home to a third of the human population in 2000, drylands occupy nearly half of Earth’s land area. Title: Desertification: 1 Desertification . Water use is part and parcel of almost every human activity as well as the life of plants and animals. They are all artistically enhanced with visually stunning color, shadow and lighting effects. Pressures from human and livestock populations coupled with the effects of recurrent drought have led to a serious degradation … Desertification has many adverse effects, both economic and ecological. 2.1.4. The spread of desertification results in a degraded landscape. 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. However, continued unabated, anthropogenic pollution and greenhouse gas emissions will further increase global warming, ocean acidification, desertification and changing climate patterns. Introduction The global community has long… 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. 60 million of those humans are indigenous who are completely dependent on native woods. 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. Desertification affects global climate change through soil and vegetation losses. It therefore reflects that when animals extinct, they reduces the variety of animals that were present in the earth’ s surface. When we lose the animals through extinction, we lose biodiversity. Millions of people may be forced to leave the land when it can no longer sustain them. Causes of Landslides. 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]. 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. 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