The landscape, in a general sense, refers to the scene presented in a certain area, that is, the visual effect. This visual effect reflects the complex of space and matter on land and land, and is a brand of complex natural processes and human activities on the earth. Ecological landscape refers to a spatial heterogeneous region composed of interacting blocks or ecosystems, which is repeated in a similar form, and is a natural complex with classification meaning. Russian geographers use both biotic and abiotic phenomena as part of the landscape, which also lays the foundation for the integration and intersection of geography and ecology. "Encyclopedia of China · Geography" (1990) summarizes several understandings of landscape in geography: 1 comprehensive characteristics of a region, including natural, economic, and cultural aspects; 2 general natural complex; 3 regional units , equivalent to the smallest natural area in the comprehensive natural division level system; 4 any regional unit.