Abstract:

The issue of resources and environment continues to be highlighted during the process of rapid industrialization and urbanization,so it is helpful to enhance the ability of regional socioeconomic sustainable development to do the early warning research on the ecological security.Combining with the theory of early warning,the paper built up an index system for early warning by selecting 28 indicators,and carried out the study on the ecological security in Suzhou City from the year 1996 to 2015 by using the overload degree model and BPANN model supported by Matlab.The result showed that it was feasible to do early warning study on ecological security by using BPANN model because of its high precision of simulation result.It also showed that the ecosystem in Suzhou was in the state of criticality safety,and its overloading level had experienced a process of “aggravationstabilitymitigation” during 1996 to 2007.Although the human's ability to support ecosystem will continue to be improved in the next few years,and the overall overloading level of ecosystem will be declined in volatility,the status of resources security and ecological security are not optimistic.In order to enhance the ability of sustainable development,the government should play its leading role and take measures from the aspects of environmental protection and management,scientific and technological innovation,industrial restructuring,resources management,and population control mechanisms, etc.〖