Impact of human activity determinant factor of global warming.

Juan G. R , Juan G. R., and Juan P. J. A. Impact of human activity determinant factor of global warming.

 Water and Irrigation Vol .: 6, No. 1: 36-38, December, 2015, Spain.

The impact of human activity has a great weight in the emission of greenhouse gases, extinction of animals and plant species, environmental pollution, deforestation and the depletion of land and water resources of the planet, it is imperative that the world population is part of the balance of factors affecting global warming of planet Earth and make more sustainable humanity and the planet. The agreements on climate change adopted in Paris have been a great challenge to the international community, but they must gradually improved, since they do not include all critical factors for achieving such goals as establishing sustainable growth of the world population through its control, and that with the current population growth between 70 to 80 million people per year will significantly increase global warming and the unsustainability of humanity. The fight against climate change requires a more systematic and efficient problem control.

Global warming is manifested from the industrial revolution born in Britain, it extends to Europe and the United States, after to the rest of the world. The preindustrial stage covers the period of 1760-1840, at the beginning of 1860 the global average temperature was 13.6 degrees Celsius and currently is around 14.7 C or whether it has already risen 1.1 C in 155 industrial stage years, with the agreement of Paris it comes to limiting the increase in global temperature to less than 2 C by the end of 2100. Since 2000 there have been 9 of 10 warmest years of the on record, so we are facing a great challenge.

On 30% have raised CO2 levels since the Industrial Revolution. Among the proposals brought to the Paris Summit it was to reduce emissions of greenhouse gases by 40% by 2030 and 60% in 2040 compared to 1990, but still has not materialized this proposal, we expect from 2020 plan is adopted effective measures to reduce emissions of greenhouse gases. To continue polluting the planet at the same rate the global average temperature rise to 3.5 degrees Celsius by the end of the century, according to scientists, is unpredictable the impact on the climate will have if the average temperature of the earth exceeds 2 C relative to the beginning of the era of industrialization, so it is necessary that the necessary measures are taken in time.

As result of climate change have reduced levels of polar ice and glaciers in many different regions of the world, causing sea level rise affecting the existence of many islands and coastal areas reducing in countries vulnerable. Climate change is characterized by prolonged droughts and heavy rains that alter weather patterns, causing major disasters and floods, rising global temperatures, melting, rising sea levels and increased tropical storm activity and cyclones.

 Global warming has caused the decrease in population numbers of some terrestrial, freshwater and marine water species, it is believed that 20-30% of plant and animal species are likely to be at increased risk of extinction, there are species possessing more likely than others to extinction, according to IUCN.

The elimination of forests changes the humidity and air flow, resulting in changes of fluctuations in rainfall patterns and temperature increases that are equally harmful and happen immediately. Tropical forests regulate climate. One way in which they do is to remove water from the soil through the roots of the trees, move through the stems and finally through the leaves. Millions and millions of leaves of trees have a very significant result of cooling, according to Nature Climate Change.

World population has tripled in just 75 years, has increased consumption of water, energy, food, natural resources and human waste, which threaten the sustainability and the future capacity of the planet. In 1940 the Earth was about 2300millones people and today we have more than 7.3 billion, we have tripled that figure. Currently the world population is growing at 70 to 80 million / year, whichever unchecked population tends to increase with increasing form, which does not guarantee sustainability.

 According to FAO data, current projections indicate that the global population will grow from more than 9 million people in 2050. The economic progress, especially in emerging countries, resulting in an increased demand for food and diversified diets. Therefore, there will be a strong growth in global demand for food, and food production is expected to increase by 70% worldwide and 100% in developing countries. However, land and water resources, the basis of our food production are limited and are already under great pressure, so that future agricultural production will have to be more productive and at the same time, more sustainable.

The steady increase in the world population, low birth control mainly by underdeveloped countries, excessive environmental pollution, inadequate protection of the marine environment, the systematic neglect of agriculture in many countries, the high demand of food, inadequate water management, accelerated loss of species of plants, animals and fish, the effects of greenhouse gas emissions, global warming, annual losses of millions of hectares from deforestation, erosion and desertification threaten sustainability of humanity and show that to fight against climate change a more systematic and efficient monitoring of the problem is required.

The agreements on climate change in Paris in connection with global warming and emissions of greenhouse gases have been approved by the 195 countries gathered in that city, the text states that rich countries will continue to provide financial support to poor countries to help them reduce their emissions and adapt to the effects of climate change, have committed to provide funds of 100,000 million from 2020, but the arrangements are still incomplete because it does not contemplate some crucial factors to achieve such objectives as the to establish a sustainable growth of the world population through its control, since a current growth in population, land and water resources do not guarantee the sustainability of mankind and the animal and plant species tend to die, should also made greater control of forests as a climate regulator and sustainable development of agriculture and marine resources. The balance of each of the factors that contribute to climate change must be programmed in stages of strict compliance dates where are reached the objectives established.

The impact of human activity has a great weight in the emission of greenhouse gases, extinction of animal species and plants, environmental pollution, deforestation and depletion of the resources of land and water on the planet, so it is imperative that the world population is part of the balance of factors affecting global warming of planet Earth and make more sustainable humanity and planet Earth.

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