Given that it is an important natural geographic feature, geomorphic type is an important factor that results in a change in spatial pattern of regional biodiversity. The study of natural landforms can promote greater understanding of geographic environment characteristics. At the same time, the present study has great reference value in the investigation of natural geographic divisions and regional nature conservation research. It is also conducive to improvement of the understanding of the natural environment and differentiation in a region. In the present study, the landscape pattern of China was analysed using a qualitative and quantitative approach, based on data of the terrain digital elevation model. We then determined a geomorphologic regionalization system for the country. In the course of analysis, relative consistency, completeness and hierarchical division were the guiding principles. Further, the methods of "top down" regional segmentation and "bottom up" regional merger were used. Through a quantitative analysis using GIS10.0 software, we obtained the outcomes of reclassification of elevation, slope analysis, and others. According to the result and the data of climate regionalization, natural geographic regionalization, geomorphic types and others, the geomorphologic regionalization system of the country is proposed, which is aimed at construction of a regional nature reserve system and biodiversity protection. This geomorphologic regionalization system included four geomorphologic zones (the eastern monsoon rain erosion geomorphologic zone, the northwest dry wind erosion geomorphologic zone, Qinghai-Tibet Plateau high frost weathering geomorphologic zone, and the South China sea islands geomorphic zone), 40 geomorphologic areas (for example the Da Xing'an Mountains, Inner Mongolia Plateau, and the Xiao Xing'an Mountains), 127 geomorphologic subareas (for example Wandashan, Laoyeling, and Zhangguangcailing), and 473 geomorphologic regions. The division level of the geomorphologic regionalization system was scientifically constructed, and reflects the basic features of geomorphic distribution. The geomorphologic zone reflects the diverse landscape pattern of China. The geomorphologic area reflects the horizontal differentiation features of plateaus, mountains, and plains. The geomorphologic subarea and geomorphologic region indicate regional geomorphic characteristics. It is difficult to use mathematical methods to directly determine morphological differences, on account of the complexity of natural geographic features. However, the results of quantitative analysis can be used as a reference for qualitative analysis. The features of geomorphologic regionalization system are listed as follows: (1) The South China Sea, which has unique climate characteristics and geological geomorphologic features, was distinguished as an independent zone. (2) Given the intent of constructing the nature reserve system, there is a substantial difference with other geomorphologic regionalization. Further, our regionalization system appears to be more scientific and accurate, as well as having greater definition. Thus, the system can be used as the basis of natural conservation geographic regionalization, and provides a reference and foundation for the construction of a nature reserve system. (3) Our system is easier to understand and master, using the usual naming convention in the geomorphologic system. (4) Large quantities of topographic data and an advanced geographic information technology were used to ensure the objectivity and scientific integrity of the results.