The International Union for Conservation of Nature (IUCN) is the largest and oldest global non-profit environmental protection organization in the world, and the only international organization in the field of natural environmental protection and sustainable development as a permanent observer of the United Nations General Assembly. Founded in Fontainebleau, France in 1948, its headquarters is in Grand, Switzerland.

IUCN is a unique worldwide alliance, and it is one of the few international organizations in which both government and non-governmental organizations can participate. Its members are divided into sovereign countries, non-profit organizations and individuals. At present, IUCN has more than 2 members from 161 countries and government agencies, more than 1, members from non-governmental organizations, and more than 16, scholars have joined the six expert committees of IUCN as individual members. IUCN now has offices in nearly 5 countries around the world, with more than 1, employees. The current President of IUCN is Mr. Zhang Xinsheng of China, and the Director-General is Ms. Eng Andersen from Denmark.

the world wide fund for nature or world wildlife fund is one of the largest independent non-governmental environmental protection organizations with a worldwide reputation. since its establishment in 1961, WWF has been committed to environmental protection, with more than 5 million supporters and a project network involving more than 1 countries all over the world.

WWF is committed to protecting the world's biodiversity and living environment, and all its efforts are aimed at reducing the impact of human beings on these creatures and their living environment.

TNC, The Nature Conservancy), founded in 1951, is one of the largest non-profit natural environment protection organizations in the world. We have always been committed to protecting the land and waters with important ecological values around the world, maintaining the natural environment and enhancing human welfare.