Regional Ecological Security Pattern Construction Based on Ecological Barriers: A Case Study of the Bohai Bay Terrestrial Ecosystem

The construction of ecological barriers and security patterns is an important way maintaining regional in landscape ecology. However, there still no consensus on the concept connotation barriers, zoning adaptive management sources are rarely considered patterns. This study uses terrestrial ecosystem Bohai Bay, China as a area, identification pattern achieved by combining service assessment with risk assessment, this basis, identified to optimize structure function sources. minimum cumulative resistance model used identify corridors strategic nodes construct based modified results demonstrate that firstly, 2873.25 km2 was source, accounting for 14.28% total. Secondly, three large barrier zones nine cells total area 1173.06 km2, 40.83% Thirdly, 35 were extracted, 32 marked, mainly distributed at intersection branches corridors. An system formed collection source selection, identification, surface construction, corridor extraction. Fourthly, analyzed, complementary relationship between terms discussed. enriches definition provides new framework identifying patterns, scientific guidance protection coastal areas.