Promoting sustainable intensification of cultivated land use (SICL) has provided a new idea for ensuring food security and green development of agriculture and sustainable use of resources. It is of important practical significance to deepen the dominant position of farmers, strengthen the modernization orientation of agricultural development, and solve the problem "New Agriculture, Countryside and Peasants", which is a complex collection of problems. This paper reviews the research on the ideologial origin of sustainable intensification abroad, identifies the connotation differences of SICL, and clarifies the logic origin of SICL of China under the background of "New agriculture, Countryside and Peasants". Based on the trajectory of "factor fusion-structural reorganization-functional excellence", following the logical approach of "process-pattern-mechanism-effect" in the system of cultivated land use, this paper clarifies the problem domain of cultivated land use system from the aspects of theoretical analysis, level measurement, evolution mechanism and optimal regulation, so as to construct a research framework of SICL. Finally, it proposes the scientific issues of "agricultural ecological space-human-land relationship-SICL", and discusses the significance and key issues of "factor & mechanism, function & system, process & pattern, scale & interface".

The research reconstructed the index system for rural revitalization and new urbanization, and used the coupling coordination model, spatial Markov chain, and geographic weighted regression model to analyze the coupling between rural revitalization and new urbanization in 30 provinces (autonomous regions and municipalities) of China from 2005 to 2017 in the aspects of coordination level, spatio-temporal differentiation pattern, dynamic evolution of space, and driving mechanisms. The results show that: (1) The degree of coupling and coordination between rural revitalization and new urbanization presents a distribution pattern of "high in the east and low in the southwest"; intermediate coordination areas are gradually spreading to the middle, and the number of high-level coordination areas is increasing. Most of the provinces with advanced coordination type are characterised by "lagging in rural development", and most of them with primary coordination and near-imbalance types are featured by "new urbanization and development lagging". (2) The dynamic evolution of the degree of coupling coordination showed the characteristics of maintaining the stability of the original state, and it was difficult to achieve leapfrog transfer. There is a phenomenon of "club convergence" in the provinces in the advanced coordination stage. The provinces that are shifting upward are mainly concentrated in the central region, and most northern provinces are undergoing downward adjustments. Areas with a low degree of coupling and coordination have a negative spillover effect on the surroundings, while areas with a high degree have a positive effect on neighboring provinces, indicating that the spillover effect is asymmetric. (3) The driving force that affects the change in the degree of coupling and coordination of rural revitalization and new urbanization has a significant spatial difference, showing a development trend of hierarchical band distribution. Government-driven, investment-driven and population-driven forces present a north-south-level band-shaped distribution. Consumption-driven, income-driven, and industry-driven forces present a zonal distribution of east and west levels.

Rural restructuring is a complex economic-social-spatial phenomenon. Based on the human-land relationship theory, this study analyzed the rural restructuring characteristics by the internal factor changes of rural regional system, interpreted the mechanism by the changes of external environment, elucidated the model coupling with external driving factors and endogenous factors, and tried to improve the geographic analysis framework of rural restructuring. Three highlight results were unveiled. First, the rural restructuring in the Jianghan Plain has the characteristics of temporal continuity and spatial non-equilibrium. The comprehensive index of rural restructuring kept growing during the study period, indicating a spatial distribution pattern of high value along the main traffic trunk from "U" shape to ring shape and low value expressed as "point (plain hinterland) and line (along the Yangtze River)". Second, the rural restructuring mechanism in the Jianghan Plain mainly reflects the coupling effect of external driving factors such as industrialization, urbanization and marketization with endogenous factors such as economy, society and space. The expansion of non-agricultural industries triggers the rural population migration and employment transfer, then promotes the restructuring of rural "stock" elements such as population, land and industry. Third, economic-social restructuring is the main model of rural restructuring in Jianghan Plain. The changes in industrial structure and production mode have exacerbated the deterioration of rural ecological environment and human settlement, with the results that rural revitalization and its sustainable development face the dual challenges of water pollution and flood disasters. The research framework reveals the geographical characteristics of rural areas in the Jianghan Plain, and the special views of rural restructuring in main agricultural production regions in Central China. The research results will provide theoretical inspiration for the geographical reconstruc-tion of rural restructuring and decision support for the rural revitalization in the case area.

The development of new business forms in rural villages can invigorate their economic growth and has proven to be one of the most important strategies for rural revitalization. The traditional villages of volcano area in northern Hainan province boast a long history, abundant natural resources, wide geophysical distributions and cultural diversity. However, the development of traditional villages has historically been handicapped, consistent with their simple-industry economy, lack of diversification of business forms and difficulty in income growth for the villagers. In the context of Hainan's rural revitalization, international tourism island construct and pilot of free trade zone, the traditional villages of volcano area are faced with new opportunities of in-depth agricultural and industrial development and integration. This research uses Meixiao village in Haikou as a case study, where a qualitative research approach of the Grounded Theory and a semi-structured interview were adopted for collecting data on public will and opinions on the development of new business forms. Subsequently, it establishes a framework for the model of new business forms development in Meixiao village, and proposes tailored business types that consider the aspirations of the villages. This research aims to help provide a reference and guide for the socio-economic transformation and new forms of Meixiao village, and for the development of new business forms for the traditional villages in Northern Hainan in general.

Exploring agricultural production efficiency under the constraint of carbon emissions based on village scale not only helps to reveal the relationship between carbon emission at the micro unit level and agricultural production efficiency, but also has certain practical significance for the choice of differentiated low-carbon agricultural production mode. Based on the survey data obtained from 65 villages in Henan province, this paper calculated the agricultural carbon emission at different sample villages, and analyzed differences in agricultural production efficiency under the constraint of carbon emission using Super-SBM model. The results show that: (1) The spatial distribution pattern of agricultural carbon emission intensity in the study area is "high in the north and south, but low in the middle", which is mainly affected by planting structure, agricultural production conditions, and human inputs. (2) Intensive use and large-scale operation of land will reduce the energy and material input per unit area, thereby reducing agricultural carbon emission intensity. (3) There are great spatial differences in agricultural production efficiency under the constraint of carbon emissions. The average agricultural production efficiency of the sample villages is 0.76, and the most areas are between 0.6 and 0.8. (4) According to the relationship between agricultural production efficiency and carbon emission intensity, the sample villages can be divided into four types: low carbon and high efficiency villages, high carbon and low efficiency villages, high carbon and high efficiency villages and low carbon and low efficiency villages. Among them, the two types of high carbon and low carbon inefficient villages account for a large proportion, which indicates that there is a widespread problem of low agricultural production efficiency in Henan. In the future, we should strengthen large-scale agricultural operations, reduce energy and material input, improve agricultural infrastructure, and advance new technologies for water saving and energy conservation, so as to promote the low-carbon development of agriculture while improving the efficiency of agricultural production.

Empowerment is an important field of community participation in tourism research. Disempowerment is the corresponding concept of empowerment, and the study of disempowerment can provide a solid theoretical basis and path for the exploration of empowerment. In the case of the Taiping Lake, using the methods of literature analysis, in-depth interview and field investigation, based on the community empowerment analytic framework, this study explored the process of community disempowerment in lake-type tourist destinations and found that the right of fishermen was weakened on political, economic, social, and psychological aspects. Unfair distribution of economic benefits is the most direct factor of the loss of community residents' sense of power. To change the power relationship between interest subjects, the request of political rights and interests generally becomes the auxiliary means of economic appeal, and the disempowerments of economy, politics and society can lead to the emergence of community psychology "sense of power". The empowerment of Taiping Lake community participation presents a spiral decline process. The perceptions of "sense of power" are significantly different due to the relative location, the degree of participation in tourism, personal ability and other factors, and the community is divided. Finally, this paper explores the roots of disempowerment of Taiping Lake community in terms of the institution, government and community.