Warming tends to reduce the number of frost days per year but also lengthens the growing season in temperature-limited ecosystems. The frost-free season is also called as a growing season. The growing season is a particular time when growing conditions for domestic vegetation and crops are most favorable. It usually becomes shorter as the distance from the equator increases. The growing season also varies according to elevation above sea level. Because of higher elevations usually, have colder temperatures with higher elevations tending to have shorter growing seasons. The growing season is usually calculated by the average number of days between the last frost in spring and the first severe Frost in autumn. Most of the crops need 90 days for the growing season usually. In equatorial and tropical regions usually all over years is growing season. Where in higher latitudes growing season is for a short time as example trundle may have about 2 months or less.
As burning fossil fuels and increasing greenhouse gases will be increased as well as the growing season will also length. It has been increasing nationally since the 1980s and no mood to reduce. Already the days of the growing season in the 20th century are 15 days longer than the past. The frost-free season became length especially in Europe in spring and northern Siberia, the Tibetan Plateau, and northwestern North America in autumn. These observed climate changes have been mirrored by changes in the biosphere, including increases in forest productivity and satellite-derived the estimate of the length of the growing season. A longer growing season provides a longer period for plant growth and productivity that can be a reason for slow down increasing carbon dioxide in the atmosphere, concentrations through increased carbon dioxide by living things and their environment. The longer growing season can increase the growth of beneficial plants (such as crops and forests) as well as undesirable ones as ragweed ( ragweed can grow faster and produce more pollen ). When increasing the days of the growing season it can be good for farmers in some areas. They can cultivate more than a past time. Warm weather can be smooth for some warm weather lovers. The animals which migrate based on the length of the day can arrive in an area to feed on young shoots only to find they have because older. The rapid action of change is causing much of the natural world to become out of sync.
Now I go to talk about frost season effects, I already wrote something upward. Let’s do some more details :
As greenhouse gas emissions continue to rise, this frost-free trend will likely contribute even more detrimental health and agricultural effects across the U.S. The seeds can be undernourished because they will be budded before time even some plants can’t grow such atmosphere. For example, the 2007 one-week spring freeze in central and eastern United States was estimated to have reduced the production of winter wheat by 19%, peaches by 75%, apples by 67%, and pecans by 66%, causing over $2 billion in economic losses. It’s really a threatening matter for the food cycle. Such huge productivity and quality of grains and fruits decreased which might be increased their cost in the supermarket.
A longer Frost-free season means more pests will survive into winter can damage or destroy the crops. Warm is not only needed for plants but also facilitated for increasing pests. Of course day by day those can be upgraded, without frosting, those days can be their growing season also. Moisture will be limited, the greater evaporation and loss of the moisture through plant transportation is associated with a longer Frost-free season. This can mean less productivity increase drying and earlier and longer fire season.
An extended Frost-free season also means a longer allergy season as long as it’s favorable for mosquitos and ticks which can potentially increase public health problems. A growing season means is the pollen season also — whether it is from tree pollens in the spring, grass pollens in the summer, or ragweed in the fall. Lab studies have confirmed this, with Timothy grass productivity twice as much pollen for a doubling of carbon dioxide, and ragweed producing twice as much pollen even before a doubling of carbon dioxide is reached. Pollen allergies are not just a nuisance. Asthma symptoms can be targeted by exposure to pollen. Nowadays the allergy included asthma patients is very common in hospitals. So this is all points as much as I can figure out about frost-free season if you want to add something new please write in the comment section.
Rowshon Ara/RA -09/2019