Last year's State of the World’s Plants report focused predominantly on synthesising knowledge of the numbers of different
categories of plants: How many vascular plants are currently known to science? How many are threatened with extinction?
What is the number of plants with uses? etc. We also looked at the main threats to these plants, including climate
change, land- use change, invasive plants, disease and over-exploitation. However, simply knowing how many plants
there are and how many are under threat is not enough – what is also needed is an understanding of why some plants
are more vulnerable than others. This year, therefore, we have also examined the emerging evidence for the characteristics
of plants that appear to make some types less/more resilient to current and future threats.
It is not all doom and gloom, however. In this year’s State of the World’s Plants, we also highlight the rapidly
accumulating discoveries and knowledge that provide important sign-posts to the next food crops, medicines, timbers
etc. Information is now also emerging on the effectiveness of conservation actions and policies in protecting some
of the most important plant species and communities across the globe. While there is still much more to do, these
positive outcomes demonstrate that with scientific knowledge and evidence-based global actions, it is possible
to conserve the extraordinary diversity of plants on Earth and to build on the unique combination of beauty and
science which can together provide some of the solutions for the global challenges facing humanity today.