Challenges of feeding a global population include lack of food access, as in cases of food insecurity and food deserts problems with distribution systems adverse weather and land use lost to suburbanization.Patterns of food production and consumption are influenced by movements relating to individual food choice, such as urban farming, community-supported agriculture (CSA), organic farming, value-added specialty crops, fair trade, local-food movements, and dietary shifts.Agricultural innovations such as biotechnology, genetically modified organisms, and aquaculture have been accompanied by debates over sustainability, soil and water usage, reduction in biodiversity, and extensive fertilizer and pesticide use.Societal effects of agricultural practices include changing diets, role of women in agricultural production, and economic purpose.ĥ.11 Challenges of Contemporary Agriculture.Agricultural practices- including slash and burn, terraces, irrigation, deforestation, draining wetlands, shifting cultivation, and pastoral nomadism – alter the landscape.Environmental effects of agricultural land use include pollution, land cover change, desertification, soil salinization, and conservation efforts.The main elements of global food distribution networks are affected by political relationships, infrastructure, and patterns of world trade.ĥ.10 Consequences of Agricultural Practices.Some countries have become highly dependent on one or more export commodities.Food and other agricultural products are part of a global supply chain.Von Thunen’s model helps to explain rural land use by emphasizing the importance of transportation costs associated with distance from the market however regions of speciality farming do not always conform to von Thunen’s concentric rings.Technology has increased economies of scale in the agricultural sector and the carrying capacity of the land. ![]() Complex commodity chains link production and consumption of agricultural products.Large-scale commercial agricultural operations are replacing small family farms.Intensive and extensive farming practices are determined in part by land costs (bid-rent theory).Agricultural production regions are defined by the extent to which they reflect subsistence or commercial practices (monocropping or monoculture).The Green Revolution had positive and negative consequences for both human populations and the environment.The Green Revolution was characterized in agricultural by the use of high-yield seeds, increased use of chemicals, and mechanized farming.New technology and increased food production in the Second Agricultural Revolution led to better diets, longer life expectancies, and more people available for work in factories.Patterns of diffusion, such as the Columbian Exchange and the agricultural revolutions, resulted in the global spread of various plants and animals.Early hearths of domestication of plants and animals arose in the Fertile Crescent and several other regions of the world, including the Indus River Valley, Southeast Asia, and Central America. ![]() Rural survey methods include metes and bounds, township and range and long lot. ![]() ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |