how climate change affects agriculture?
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Changing rainfall patterns, increased evaporative demand and reduced availability of water for irrigation all threaten agricultural production, particularly in areas where water supplies are already under pressure. Drier soil conditions will reduce growth of crops, pasture and trees.
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Global climate change affects a variety of factors associated with drought. There is high confidence that increased temperatures will lead to more precipitation falling as rain rather than snow, earlier snow melt, and increased evaporation and transpiration.
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Climate change influences severe weather by causing longer droughts and higher temperatures in some regions and more intense deluges in others, say climate experts. Among the most vulnerable are communities in exposed mountain and coastal regions.
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The results thus indicate that the net effect of climate change has made agricultural drought less likely and that the current severe impacts of drought on California's agriculture have not been substantially caused by long-term climate changes.
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Some of the environmental issues that are related to agriculture are climate change, deforestation, dead zones, genetic engineering, irrigation problems, pollutants, soil degradation, and waste.
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As agricultural and livestock production are largely dependent on rainfall, the country's high rainfall variability and limited irrigation capacity make them vulnerable to climate change. The rising frequency of drought and shorter rainy seasons has led to increasing crop loss and food insecurity.
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While climate change may lead to increased atmospheric carbon dioxide which could potentially increase plant productivity, temperature increases are likely to increase biomass decomposition (reducing soil organic carbon) and the combination of drier summers and wetter winters to increase soil erosion.
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The climate change, low use of irrigation, minimum use of fertilizers, less-use of plant protection measures, non-adoption of high yielding varieties, etc. are also affects the Page 9 production level at the large extent in the state. However factors like soils, labourers, availability etc.
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Climate change poses significant challenges to global food safety. ... The sensitivity of germs, potentially toxin-producing microorganisms and other pests to climate factors suggests that climate change has the potential of affecting the occurrence and intensity of some foodborne diseases.
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According to the IPCC (2007), agricultural productivity will decline from 21% to 9% by 2080 due to climate change in sub-Saharan Africa. The report indicates that rising temperatures in precipitation are likely to reduce the production of stable food by up to 50%.
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Changes in climate can result in impacts to local air quality. Atmospheric warming associated with climate change has the potential to increase ground-level ozone in many regions, which may present challenges for compliance with the ozone standards in the future.
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The biggest changes in the land carbon cycle are likely to come because of climate change. Carbon dioxide increases temperatures, extending the growing season and increasing humidity. Both factors have led to some additional plant growth. However, warmer temperatures also stress plants.
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Climate change can disrupt food availability, reduce access to food, and affect food quality. For example, projected increases in temperatures, changes in precipitation patterns, changes in extreme weather events, and reductions in water availability may all result in reduced agricultural productivity.
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Impacts of climate change on our natural resources Climate change presents challenges for our air, water, lands, homes and businesses. ... reduced water levels that may eliminate wetlands or affect their ability to reduce erosion, filter contaminants, and provide fish and wildlife habitat.
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Climate change affects human health and wellbeing through more extreme weather events and wildfires, decreased air quality, and diseases transmitted by insects, food, and water.
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Climate change is affecting agricultural production in the Northeast. Heavy precipitation events can damage crops and wetter springs may delay planting, resulting in later harvest and reduced yields. Longer, drier summers may reduce water availability and increase plant heat stress, also reducing yields.
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On a global level, when the staples of everyday life suddenly become unaffordable, the devastating impact can include widespread civil unrest. Experts predict that climate change will lead to lower yields of maize and wheat, seriously disrupting the food supply of Africa and Central America.