That's what CFACT are proposing. And I'd just like to thank their sponsors for generously supporting the good work they do. Exxon Mobile have given them millions in the past, and the heir to the Mellon banking and oil fortunes supports them to this day.
Let's just put aside the fact that plants survived for a couple of billion years before animals evolved, and were doing quite nicely until humans appeared.
And let's ignore the human impacts on deforestation and desertification first as direct results of slash and burn, intensive farming and animal husbandry. And by "husbandry" I mean breeding animals, killing their predators and letting them consume resources over large areas, often running wild in ecosystems where they have never been indigenous. Also let's ignore indirect effects, like Lake Chad drying out and shrinking to the size of a pond, which probably resulted from global warming. Clearly these are not threatening those poor plants that we must protect.
This carbon dioxide is really good for the planet and we need to get it's levels up.
Why look at the world through rose-tinted spectacled when you could look at it through oil-stained ones instead!
When I was checking their website, it came up with a "site security not trusted" message, which to be honest is the least of its problems. It led me to the below survey, copied from their site without permission. I may use it in my classes next semester to demonstrate how to make leading questions which combine and confuse multiple issues and skew survey results.
2014 National Global Warming Survey
Instructions: Please answer each question by clicking the box next to the appropriate answer.