Research on traditional village form of Jiarong Tibetan based on landscape security pattern: a case study of Zhibo village in Barkam City

In order to achieve sustainable development of village form and optimization use of land resource, the traditional village form on plateau was researched quantitatively based on the theory of landscape security pattern. Accompanied with analysis of suitable relationship between the village form and the land use, the landscape pattern architecture of study region was constructed by the method of combined model, composed of the minimum cumulative resistance and the information amount evaluation, in which seven resistance evaluation factors were applied, namely slope, aspect, elevation difference, distance to water body, distance to road, land resources and cultural landscape. In the case study of Zhibo village, a traditional village of Jiarong Tibetan in Barkam, the village was divided into four landscape security levels from low to high level and 104 sources of village form. All sources of village form in Zhibo were classified into four categories: local architectural heritage protection source, folk customs influence source, natural landscape influence source, and open space influence source, whose distribution proportion in study region were 29.44%, 25.35%, 32.41%, and 12.8%, respectively. The suitable direction of future development of the village form sources was illustrated as follows according to the distribution probability of the village form sources effected by the quantitative values of the minimum cumulative resistance and the information. The elevation should be between 2501 and 2522 m. The slope should be between 9° and 15°. The aspect should be south slope, west slope and northwest slope. Considering the landscape security level, two situations of land use are suggested. The first one is that the new function will be granted to land use based on the village form. The other one is the land use will be gradually updated. The results indicate that the study on relationship between the land use and the village form can provide not only an effective solution that can solve the problems between human being and the land space, but also a significant promotion that can improve the rural construction in the northwestern plateau of Sichuan and preserve the traditional village form of the Jiarong Tibetan.