Heavy metals are particularly prominent among soil inorganic pollutants, mainly due to their inability to be decomposed by soil microorganisms and their tendency to accumulate and transform into more toxic methyl compounds. Some even accumulate in harmful concentrations through the food chain, seriously endangering human health. The main heavy metal pollutants in soil include mercury, cadmium, lead, copper, chromium, arsenic, nickel, iron, manganese, zinc, etc. Although arsenic is not a heavy metal, its behavior, source, and harm are similar to heavy metals, so it is usually included in the heavy metal category for discussion. In terms of the needs of plants, metal elements can be divided into two categories: ① elements that are not needed for plant growth and development, but are more harmful to human health, such as cadmium, mercury, lead, etc Elements required for normal plant growth and development, and having certain physiological functions on the human body, such as copper, zinc, etc., can cause pollution and hinder plant growth and development.
UN SDGs
The 2030 Agenda for Sustainable Development, adopted by all United Nations Member States in 2015, provides a shared blueprint for peace and prosperity for people and the planet, now and into the future. At its heart are the 17 Sustainable Development Goals (SDGs), which are an urgent call for action by all countries - developed and developing - in a global partnership. They recognize that ending poverty and other deprivations must go hand-in-hand with strategies that improve health and education, reduce inequality, and spur economic growth – all while tackling climate change and working to preserve our oceans and forests.
