Effects of climate change on agriculture

**Impact of Climate Change on Agriculture**:
– Observed increase in extreme weather events in Europe from 1964 to 2015.
– Major weather events like heatwaves, droughts, and heavy rains cause substantial losses in agriculture.
– Climate change attribution to specific weather events causing shortfalls is often difficult.
– Heat extremes in Europe increased from 1950 to 2019, while cold extremes declined.
– Severity of heatwave and drought effects on European crop production tripled over 50 years.
– 2018 heatwaves linked to climate change reduced global food prices due to crop failures.
– Changes in temperature and weather patterns will alter suitable farming areas.
– Rising temperatures and changing weather patterns result in lower crop yields due to water scarcity.
– Pests and plant diseases expected to become more prevalent or spread to new regions.
– Livestock affected by heat stress, feed shortfalls, and spread of diseases.
– Global food security may be affected by climate change, leading to increased hunger risks by 2050.

**Projected Effects of Climate Change on Agriculture**:
– Maize fails to reproduce at temperatures above 35°C, soybean above 38.8°C.
– Climate-driven changes in crop yields at different latitudes.
– Temperature increase will impact crop reproduction and yield.
– Predictions indicate potential shifts in global agricultural productivity.
– Changes in management practices can help mitigate negative effects on agriculture.
– Agricultural innovation and institutional changes are essential for climate change adaptation.
– Climate-smart agriculture practices can reduce risks to agriculture from climate change.
– Measures like improving soil fertility and adapting to changing weather patterns are crucial.
– Sustainable food systems require adaptation measures alongside global warming reduction efforts.

**Impact of Climate Change on Crop Yields**:
– Crop yields in tropical regions negatively affected by moderate temperature increase.
– Further warming projected to decrease crop yields globally.
– Staple crops sensitive to heat, affecting soybeans and corn.
– Maize yields in Heilongjiang region of China increased due to rising temperatures.
– Crops at elevated CO2 concentrations show a decrease in micronutrient density.
– Food crops could see a reduction of protein, iron, and zinc content by 3 to 17%.
– Increased erosion from anthropogenic factors can lead to significant soil carbon loss.

**Climate Change and Livestock**:
– Preferred temperature range for domestic animals is between 10 and 30°C.
– Livestock in colder regions benefit from warmer winters.
– Summertime temperature increases and heatwaves negatively impact livestock.
– Animals in low latitudes face additional days of extreme heat stress.
– Heat stress index increases for farm animals globally.
– Climate change elevates the risk of livestock suffering from heat stress.
– Layer hens may avoid severe heat stress during winter at 2.5°C warming.

**Changes in Agricultural Land and Water Availability**:
– Some coastal areas in the United States have freshwater wells below sea level, making them vulnerable to saltwater intrusion.
– Climate change could lead to more extreme rainfall events, increasing erosion and soil degradation in agricultural landscapes.
– Agricultural land loss is expected in areas like South East Asia due to rising sea levels.
– Warmer temperatures can lead to a more vigorous hydrological cycle, causing erosion and soil degradation.
– Soil fertility is affected by global warming, with up to 22% soil carbon loss in 50 years.
– Rising sea levels will result in agricultural land loss, especially in low-lying areas.