Global climate changes are threatening the survival of our species. Landscape architecture adaptive to climate change has become a hotspot. Many low-carbon ideas are involved in the process of formation of some regional landscape. This paper discussed the low-carbon ideas in some regional landscape from scientific landscape pattern, technology of using clean energy, usage of local materials, ecological design for construction and so on. These ideas are valuable to modern landscape architecture. In order to create new landscapes accordant with the spirit of the times, more attention should been paid to how to integrate ancient low-carbon ideas, new technology, local characteristics and function into modern landscape architecture.