Juan G. R., Juan G. R., and Juan P. J. A. World population growth threat future sustainability humanity.
Water and Irrigation Vol .: 9, No. 1: 4-6, February 2018, Spain.
The continuous growth of the world population and the increase in the demand for food, means that every day the production of food is insufficient to guarantee the future of the balanced diet of the inhabitants of the planet earth. In the year 1940 the world population was 2,300 million and at the beginning of 2018 it was 7600 million, that is to say that it has increased by 3.3 times in only 78 years, while the cultivation areas have increased by 1.3 times, which indicates that the sources of agricultural food are insufficient to guarantee the future sustainability of humanity, currently in 2018 the proportion of agricultural hectares per inhabitant is 0.21 and in 2050 it is estimated to be 0.18, which will cause the increase in inequality social and the increase of people with hunger and malnutrition, at this rate of population growth the effects will be more visible from the year 2050.
The continuous growth of the world population and the increase in the demand of agricultural products, means that every day the production of food is insufficient to guarantee the future of the balanced diet of all the inhabitants of the planet earth.
Another influential factor in the sustainability of humanity is the gradual depletion of freshwater resources and oceans, its pollution, which together with climate change, global warming and the impact of human activity, complicate the solution even more of the problem of its future sustainability
Tabla Nº 1. World population, irrigation areas and areas cultivated in millions
|World population||Irrigation area||Cultivated
|Year||Millions of inhabitants||Population growth in
millons . inhabitants / year
|Ha/ inhab.||Millions hectare||Ha/ inhab.|
|2000 BC||32||0.005||2000 BC|
|1000 BC||50||0.01||1000 BC|
|1 AC||250||0.3||1 AC|
In the year 1940 the world population was 2,300 million and at the beginning of 2018 it is 7600 million, that is to say that it has increased by 3.3 times 7600/2300 in only 78 years, while the cultivation areas have increased by 1.3 times 1587 / 1260, which indicates that agricultural food sources are insufficient to guarantee the future sustainability of humanity, currently in 2018 the proportion of agricultural hectares per inhabitant is 0.21 and in 2050 it is estimated to be 0.18, Table 1
.The proportion of agricultural areas dedicated to human and animal food every day is smaller, which causes the increase of people with hunger and the increase of social inequality, from the year 2050 the effects will be more visible. More global birth control is needed in the different countries with medium and high birth rates in order to reduce the growth of humanity to sustainable levels.
In the elaboration of the work, information from different sources has been used: Publications of statistical data of the FAO, publications of the UN. Technical publications of irrigation areas in different countries, World irrigation area by countries in 2015, 1993 and in 1987 by Juan G. R., Agricultural irrigation statistics from Wikipedia, Production Yearbook. The world population, publications on famines in the world. The experience of 50 years dedicated to the problem of water, irrigation and food production.
Table 2. World population and the inhabitants with hungry.
|World population||World population with hungry|
|Year||Millions inhabitant||Year||Millions inhabitant with hungry|
|8000 BC||8||3300 BC-395||Millions of people died of hunger in Egypt|
|500 BC||100||500 BC||Was famine in Rome.|
|1 AC||250||168 AC||2 millions of people died of hunger in Egypt|
|4 millions died of hunger in Kiang, China
15 millions died of hunger in India
4 5 millions died of hunger in China
|1940||2300||1918||During the First World War died of hunger millions of people.|
|1950||2600||1944||During the Second World War died of hunger millions of people.|
|1960||3000||1960||270 millions of people with hungry|
|2000||6000||1992||1000 millions of people with hungry|
|2011||7000||2011||820 millions of people with hungry|
|2015||7300||2014||800 millions of people with hungry|
|2018||7600||2018||795 millions of people with hungry|
|2050||9700||2050||Is estimated 1300 millions people with hungry|
The excessive growth of the world population increases the instability and food insecurity of Planet Earth, it becomes necessary a greater control over the world birth rate and the increase of the sources of food supply. It is essential to provide more technical assistance and economic aid to the less developed nations and affected countries in order to achieve a better balance between the different nations.
The seas and oceans contribute to the sustainability of mankind, but they are also very over-exploited and contaminated, which is why it is necessary to have greater control of sustainable fishing and to avoid contamination of their waters. The world production of fisheries and aquaculture was 180 million tons in 2016, which represents an additional contribution of 24 kilograms per capita, according to FAO data, despite this additional contribution of food, hunger in the world affected 800 million people. It is estimated that in the year 2050 there will be 1300 million hungry people worldwide, Table 2. This indicates that we are facing a difficult situation that requires more understanding and global support to face a more sustainable planet.