Abstract. Major function oriented zones (MFOZ) is the new method of spatial regulation for re-shaping regional development pattern in China. County is an important part of the system of administrative divisions, and it is also the key areas of the adjustment of spatial patterns. This paper attempts to put forward MFOZ of county based the state space method which mainly used in the field of theory of ecological carrying capacity, It is established the major functional index by used the state space method and determine the limit threshold and spatial distribution of MFOZ. Considering the layout of the county economy and land use and similar functional area concentration or dispersion degree, MFOZ of Libo county should be divided into four types, namely suitable development zone, moderate development zone, ecological protection zone, prohibition development zone. Compared with the traditional system clustering method, The result of the state space method is more practical. MFOZ can provide a theoretical basis for the sustainable development of Libo county.

Abstract. Taking Libo county as the research area, first from 6 aspects to consider, select 26 evaluation index, the evaluation index data by the extremum method of standardization standardization processing, analysis and principal component scores by principal component analysis; Then, based on the niche theory, calculate the niche breadth and overlap with the Simpson model and Pianka model, further analysis of the competitiveness of eco-tourism development in the township and the similarity analysis and overlay analysis, and expression evaluation results of the space based on GIS spatial clustering and overlay analysis. Yuping Street office, Chaoyang, Xiaoqikong as the grade I on the potential of tourism district; Jialiang, Limingguan to the second level, the others are the III level. Through research, it provide realistic guiding significance to promote the development in the key ecological function area.