Do the plants give Carbon Dioxide at night time?............How much carbon dioxide do plants give off?

How much carbon dioxide do plants give off?

Answer 1: During their lifetimes, plants generally give off about half of the carbon dioxide (CO2), that they absorb, although this varies a great deal between different kinds of plants. Once they die, almost all of the carbon that they stored up in their bodies is released again into the atmosphere. As you may know, plants use the energy in sunlight to convert CO2(from the air) and water (from the soil) into sugars. This is called photosynthesis.Plants use some of these sugars as food to stay alive, and some of them to build new stems and leaves so they can grow. When plants burn their sugars for food, CO2 is produced as a waste product, just like the CO2 that we exhale is a waste product from the food we burn for energy. This happens day and night, but since photosynthesis is powered by sunlight, plants absorb much more CO2 than they give off during the daytime. At night, when photosynthesis is not happening, they give off much more CO2 than they absorb. While they're alive, overall, about half of the CO2 that plants absorb is given off as waste. When you look at a tree, almost all of the body of the tree is made of sugars, which are made from carbon (from CO2) and hydrogen and oxygen (from water). When the tree dies, it rots as decomposers, like bacteria, fungi,and insects eat away at it. Those decomposers gradually release almost all of the tree's stored carbon back into the atmosphere as CO2. Only a very small portion of the carbon in the tree ends up staying in the soil or washing out to sea without changing back into CO2.

the above figure exp lines the performance of tree clearly

Benefits of plantation

Adding several trees to your home landscape will not only enhance the natural beauty of your yard but will also :

• Raise the value of your home.
A well designed landscape can add dramatically to your home’s resale value. As much as 30% according to Countrywide Homes in Ontario!

• Lower your air conditioning and heating bills.
Large deciduous trees planted on the southwest side of your home can reduce both your air conditioning and heating bills.


The shade provided by the leaves of the tree in the summer keeps your home far cooler than baking in the blazing sun! Some studies have shown that you can save 30% on your air conditioning energy consumption! One tree planted in an optimum location in your yard is equivalent to 10 room sized air conditioners operating for 20 hours a day on a summer day! That’s a huge energy savings! Also planting a tree to shade your air conditioning unit can increase its efficiency by up to 10% ( Be careful not to interfere with the airflow around the unit).
And after the autumn leaves have fallen the sun will be able to stream in through the windows providing free heat on those cold winter days. Also natural light will fill your home which means less lights on in the home and a brighter, cheerier atmosphere is created.