Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS
XIAO Rongbo, OUYANG ZhiYun, HAN Yishi, WANG Xiaoke, LI Zhenxin, ZHAO Tongqian
Ecological security is one of the important footstones of national security, and is the base of sustainable development.Regional ecological security means that the ecological condition and the main ecological issue of a region does not threaten its survival and development with a given temporal spatial environment,at the same time the natural ecosystem service meets the needs of the regional survival and development.On the basis of comprehension and analysis of ecological security conception,the evaluation indices system is established including ecological products, eco environment situation,ecological function,and regional ecological security index and calculation model is put forward.Taking Hainan Province as an example and applying this assessment method,its integrative terrestrial ecological security index is 0.610.Among three assessing aspects,ecosystem services security is highest(0.772),security depending on resource is the lowest(0.468).The result indicates that the terrestrial ecological security is better in Hainan province especially in erosion controlling,natural disaster rejecting,air quality maintenance,etc. But there is also a lot of unsafe hidden trouble about energy sources self supporting ability,biodiversity protection,waste and sewage disposal,etc.It is believed that scientific and reasonable measures should be further strengthened,and safe ecosystem should be developed,so as to realize regional sustainable development.