To be specific, 70% of fresh water goes to agriculture and this can increase up to 90% in drier regions (Gilman). With that said, weakened water supply is deemed to influence agriculture worldwide. Moreover, in Larry Gilman’s, Agriculture: Vulnerability to Climate Change, he discusses the vital effect climate change as a whole can have on agriculture. He specifically mentions the effect water can have on food production stating, “As of 2002, about 30 countries were facing chronic water shortages, a number expected to exceed 50 by 2050. Water shortages will impact both health and agriculture directly” (Gilman).
Introduction Aim: To compare the effectiveness of compost and earthworms on the germination and yield of a spinach crop. Motivation: Fertilisers are mixture of chemicals that add nutrients to the soil to establish better yielding crops (Berger, 2013). Though these products have proved to provide many beneficial aspects to the agricultural sector, they have many negative environmental consequences. Fertilisers contain many substances, including mostly potassium, phosphorus, sulphur, calcium, magnesium and nitrogen. These substances, when they accumulate in the soil, can have harmful side effects on the environment and subsequently on the productivity of crops (Vimpany and Lines-Kelly, 2004).
This is because the higher demand for food and fuel causes the removal of protective vegetation from the area, meaning that rain-splash erosion and aeolian erosion can occur. The chance of desertification increases when an area is experiencing drought conditions. This is because the soil is already stressed by the processes of overcropping and overgrazing, and so a drought dries out the soil completely and causes it to become useless and desertified. In Sahelian countries such as Chad and Niger, cash crops (Crops only sold for their monetary value) such as cotton and cashew nuts are grown in massive plantations as part of economic reforms known as structural adhustment programmes. This is because the owners of these farms receive debt relief for growing this crop.
The wastage is high in fruits and vegetables which is nearly 50 percent. With the decrease in the size of total farmland and in the number of farmers worldwide, and with the advance of industrial and service sectors at unimaginable pace, food production is not increasing at expected level. Moreover, the increased usage of food products for industrial requirements and bio fuels is also a reason for food scarcity. Apart from this, food production is badly hit by the drastic changes taking place in the climate. It’s a matter of grave concern that all these developments are resulting in hunger.
Global food security problem Global environmental changes have resulted in many problems like air and water pollution, environmental disasters, global warming and food security is one of these problems. The number and proportion of hungry people in the world are in decline with the recovery in the global economy and the survival food prices, but the hunger rate is still higher than it was before the crisis rising food prices and the economic crisis. Over the time these causes of food security issue are aggravating and growing which makes the need for speed avoided and resolved. This essay will discuss the global food security issue that emerged due to the population explosion, climate changes, agriculture problems, and lack of awareness of
Although cattle ranching is necessary there are some bad effects. Seventy percent of animals on earth live in forest so their lives and species are being endangered due to deforestation and the loss of trees increases carbon dioxide in the air. Although deforestation is a problem it is shown in document C that the Brazilian government is trying to fix their mistakes. In 1980, 80% of the deforested land was used for agricultural services (cattle ranching, logging, and large and small scale agriculture Doc C.) In ten more years only 60% of the land was used for agricultural services, so this shows the deforestation problem is working on getting
Both droughts and floods carry severe consequences as eroding topsoil, flooding rice fields and filling in irrigation canals will constrain food production. It would also cause more money being pumped in to recover from the losses of building infrastructure etc.For example, in 1979, a flood caused India to suffer $2
Salinity – 170 word – supposed to write 165 Salinity has an impact to the productivity of the Temperate Grassland biome in the Murray Darling Basin and kills shallow rooted plants; shallow rooted plants can’t keep the water table sable as they aren’t native. Salinity impacts farms, rivers, drinking water, buildings and roads, vegetation etc. The Murray Darling Basin is a major source for civilization as 3 million people use the Murray Darling Basin for house-hold needs. Salinity is the amount of salt present in the land’s surface, or dissolved in water in rivers or ground water. Salinity is caused by the water table rising which causes the salt to rise to the surface.
Nutrients are chemicals elements that plants and animals require for growth. Macro nutrients nitrogen, phosphorus, and potassium are found in artificial fertilizers. My neighbor would be affecting the nutrient cycle because the fertilizer is extracting nutrients from the soil and leaving them to be placed in the aquatic environment. This affects the Nutrient Cycle. When these nutrients are taken away this can lead to the soil lacking the micro nutrients that are needed.
World population was supposed to exceed to 8-10 billion during the middle of the century, where a large number of growth will take place in humid tropics which is having richest form of biodiversity. Population plays a key role in the loss of biodiversity, to meet the needs of growing population more pressure has created on the components of biodiversity (ecosystems, genes and species)( Myers, 1994). Urbanization led to loss in the biodiversity, where the household demographic aspect is an important cause for ecological resource consumption (Liu et al., 2003; Richard and Gorenflo, 2011). Rapid species growing areas possess a high number of threatened and vulnerable plant species due to over-exploitation and habitat loss of population and some other external pressures pose a high risk for the extinction of plant and animal species, it takes place where the humans are entirely dependent on biological diversity for their basic occupation (Cincotta and Engelman, 2000). Many parts of the world especially in Asia and Africa the threatened species and people habitually present on the same localities (Craig et al., 2009).