Abstract: The existence of mountains-rivers-forests-farmlands-lakes-grasslands systems emphasises the need for ecosystem integrity and reflects the relationships among natural ecosystems. The construction of ecological security pattern can connect fragmented habitats, thereby improving the stability of the ecosystem and maintaining regional ecological security. Using the literature analysis method, the logical line of "planning and design of pattern elements-sources identification-resistance surface setting and modification-corridor extraction-pattern optimization and effectiveness evaluation-application of research results" was taken for combing out each important link in constructing ecological security pattern based on minimum cumulative resistance model, clearing and analyzing the current research points and existing problems of each link, so as to make suggestions and to point out the direction of future development. The results show that: (1) For the identification of ecological sources, a combination of direct and indirect identification should be adopted to meet the needs of management and supervision in practice. (2) At present, resistance surface construction methods mainly include scoring assignment based on land cover and ecosystem service assignment, which have the disadvantages of strong subjectivity and poor applicability. Relevant index systems should be improved to promote the scientific nature of the ecological resistance surface assignment; (3) Compared with the ecological red line, the ecological network emphasises the connectivity of the landscape. The layout of the ecological red line can be optimised through corridors and nodes. (4) Compared with other methods, the minimum cumulative resistance model has the advantages of applicability and compatibility. However, in the future, it is still necessary to strengthen the researches on multi-path analysis and ecological nodes, pay more attention to the difference of the spatial scale of the research object, and improve the objectivity and applicability of the model.

Key words: land ecology, ecological security pattern, minimum cumulative resistance model, ecological corridor, ecological network