The first grid of global terrestrial ecological security indicators was established
Date: 2020-07-06 Source: Western Ecological Security Collaborative Innovation Center
Recently, professor Huang Jianping, director of the Collaborative Innovation Center for Ecological Security in western China, Lanzhou University, has achieved important research results in ecological security assessment, successfully established an ecological security assessment system and proposed a global ecological security index. The research team gridded the global land and used the index to evaluate the ecological security status of each grid point on the global land for the first time, providing a scientific basis for the realization of sustainable development goals and ecological civilization construction. The index is also an example of the team's success in assessing ecological security from a new perspective on climate change: the oxygen cycle.
Ecological security refers to the stable and safe state of ecological environment while ensuring the sustainable development of social economy. Due to ecological safety involves the ecological system of the interaction of multiple links, previous research also starting from regional scale to build more indicators, or to evaluate for the unit with the countries around the world, to an reasonable accurate detailed quantitative evaluation of ecological security, to global distribution rule and the future trend of land ecological security research there is a big uncertainty. In recent years, the Collaborative Innovation Center for Ecological Security in the west of Lanzhou University has established a global terrestrial grid ecological security index based on satellite remote sensing, ground observation and numerical model data, aiming at the scientific problems that need to be solved urgently in the field of ecological security. The index takes into account factors such as oxygen production and consumption process, warming magnification rate and dryness index, and classifies global terrestrial ecological security into four grades: safety, sub-safety, mild risk and serious risk. By the end of the century, the model predicts that under a high-emission scenario, 57 percent of the world's land area will be ecologically unsafe.
The above research results have been published online recently in the international journal Ecological Security Under Climate Change, "Declines in Global Ecological Security".
