Implementing the strategy of rural revitalization is an inevitable requirement for solving the main social conflicts in China in the new era, which is related to the success of the country's modernization. Rural revitalization is a comprehensive process of natural and human systems. To implement the strategy of rural revitalization, it is necessary to establish a scientific and sound planning system of rural revitalization in order to coordinate and optimize the allocation of urban and rural factor resources. Based on the system perspective of geography, this study analyzed the connotation of the "rural" concept and the basic characteristics of rural development. It summarized the basic features and main problems and then preliminarily constructed a framework of rural revitalization planning system. The results show that there are multiple attributes of rural system, which contains social and cultural, political and economic, and geographical space. It also has many functions such as production, living, ecological, and cultural. Rural revitalization is a comprehensive process combining rural resources utilization, economic and social development, and coupling of natural and human systems. Rural system is characterized by decentralization of factors and self-organization of development, spatial heterogeneity and diversity of types, dependence on regions and cities, and strong restriction of industrial development by natural factors. Rural revitalization planning is an integrated and coordinated process of allocation of rural spatial factor resources. Its essence is to promote equity-oriented planning and more emphasis should be placed on the participation process of planning. There are some main problems of rural planning. At present, China's rural planning has not yet formed a complete system. Rural planning lacks legal support and the development of rural planning technology and theory lags behind. The boundary and depth of rural revitalization planning have not been clearly understood. The guarantee mechanism for the implementation of plans needs improvement. Based on the above analysis, a "five-in-one" rural revitalization planning system is proposed, including the main planning system, institutional guarantee system, technical support system, multi-planning coordination system, and participation feedback system. This system can coordinate the allocation of rural factor resources more effectively, integrate into regional and urban development, form planning synergy, and activate development vitality. It will also be helpful for enhancing the authority, feasibility, and practicability of rural revitalization planning.

Taking administrative village as the research unit and starting from the five dimensions of rural settlement, land use, population, economy, and human settlement environment, this study firstly constructed an evaluation index system of rural development level. Then using spatial autocorrelation, hotspot analysis, and rank-size rule, we analyzed and evaluated the spatial pattern and scale hierarchy of rural development levels. The results are as follows: 1) The spatial differentiation of rural development level in Wuhan City's new urban districts is obvious, and rural development shows a significant spatial agglomeration characteristic at the administrative village level. The administrative villages with high level of rural development are concentrated in the junction of the southern part of Huanghua District and the eastern part of Dongxihu District, the eastern part of Hannan District, and the northern part of Jiangxia District. The administrative villages with average development level and below are widely distributed. 2) The scale of rural development in the new urban districts is in line with the rank-size rule. The development of high-level administrative villages are insufficient but the medium-low order administrative villages are widely developed, the rural scale spreads over a wide range, and the level of urbanization needs to be improved. 3) The hierarchical system of rural settlements in the new urban districts presents a pyramid structure, which is similar to the central place theory model based on market principle (K=3), and the level of the center is lower. Finally, according to the results of the study, policy recommendations for rural development were put forward.

Rural multifunctional values?in urban fringes are prominent at the current stage of urbanization in China. Therefore, it is urgent to delineate "production-living-ecological" space using the rural multifunction theory in order to carry out spatial reconstruction. This study developed a comprehensive method for delineating the "production-living-ecological" space in urban fringe based on rural multifunction evaluation, taking Tongshan District of Xuzhou City for empirical research. First, the spatial and temporal changes of rural multifunctions were evaluated from the aspects of production, living, and ecological functions. Second, suitability evaluation for "production-living-ecological" space was carried out at the grid scale, and then, the rural multifunctional "production-living-ecological" space suitability evaluation result was attained. Finally, the "production-living-ecological" space was delineated. The study revealed that: 1) With the overwhelming development of rural recreation and sightseeing agriculture in urban fringe, the application of rural multifunction theory to the reconstruction of multifunctional space can promote development transition. 2) Non-agricultural production function and living function are mainly distributed in the suburbs surrounding the main urban area, while agricultural production function is mainly distributed in the outer suburbs, and ecological function shows clear spatial heterogeneity. Agricultural, non-agricultural production, and living functions are improving, while ecological function is declining. 3) "Production-living-ecological" space delineation at county level needs multiscale combination, not only considering the multifunctional differences at the township scale, but also accounting for suitability at the vector or grid level. The proposed method of delineating "production-living-ecological" space based on rural multifunctional evaluation can provide a scientific basis for spatial planning.

It is of great practical significance to explore the regional differences in the structure efficiency of rural land use to guide the efficient use of rural land. At the same time, under the background of the strategy of rural revitalization, scientific and rational evaluation of the spatial and temporal allocation of rural land can provide land resources guarantee for the sustainable development of rural areas. Taking 31 provinces and cities in the mainland of China as the research object from 2009 to 2016, the spatial and temporal differentiation and influencing factors of rural land use structure efficiency were discussed by using Super-SBM model and geographical detector. The results show that: 1) The overall efficiency of China's rural land use structure in 2009-2016 was in the middle level and showed an upward trend year by year. 2) There was a significant spatial difference in the efficiency of input and output of rural land use in China. The input and output efficiency of rural land use in China showed a distribution pattern of high to low from the east to west, and the efficiency in the north area is higher than that in south area. 3) The influence of various factors on the structural efficiency of rural land use in China has temporal volatility and spatial heterogeneity. The influence of rural conditions was significantly higher than that of urban-rural relationship. And the impacts of regional economy and industrial structure on the structural efficiency of rural land use have been significantly improved. 4) In the process of rural land use in China, all types of land use are shown as input redundancy, and the proportion of economically available land among regions is obviously different, the eastern area needs to adjust ecological space such as garden land and forest land, the middle and western regions need to consider the whole land use structure optimization, while northeast area needs to focus on the intensive and efficient use of village land.